Portland Harbour - Castle Cove (Beach) (Dorset) weather
Find a forecast
Here are our top tips to keep you, your friends and family safe at the beach with links to Royal National Lifeboat Institution (RNLI) and Met Office advice.
- Head to a lifeguarded beach; check the RNLI lifeguarded beach tool
- Follow RNLI Float to Live advice if you find yourself struggling in the water
- Know what to do if you get caught in a rip current (RNLI)
- Check the tide times to avoid getting cut off by the tide coming in
- Call 999 and ask for the coastguard in an emergency
- Learn more about staying safe at the beach
Forecast days
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Today. Maximum daytime temperature: 14 degrees Celsius; Minimum nighttime temperature: 13 degrees Celsius. Heavy rain. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Moderate.Today. Maximum daytime temperature: 14 degrees Celsius; Minimum nighttime temperature: 13 degrees Celsius. Heavy rain. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Moderate.
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Friday 14 June. Maximum daytime temperature: 16 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius. Cloudy changing to light showers by lunchtime. Sunrise: ; Sunset: . UV: High; Pollution: Low; Pollen: Moderate.Friday 14 June. Maximum daytime temperature: 16 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius. Cloudy changing to light showers by lunchtime. Sunrise: ; Sunset: . UV: High; Pollution: Low; Pollen: Moderate.
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Saturday 15 June. Maximum daytime temperature: 16 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius. Sunny intervals changing to heavy showers by late morning. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Moderate.Saturday 15 June. Maximum daytime temperature: 16 degrees Celsius; Minimum nighttime temperature: 12 degrees Celsius. Sunny intervals changing to heavy showers by late morning. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Moderate.
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Sunday 16 June. Maximum daytime temperature: 16 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius. Sunny intervals changing to cloudy by lunchtime. Sunrise: ; Sunset: . UV: High; Pollution: Low; Pollen: Moderate.Sunday 16 June. Maximum daytime temperature: 16 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius. Sunny intervals changing to cloudy by lunchtime. Sunrise: ; Sunset: . UV: High; Pollution: Low; Pollen: Moderate.
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Monday 17 June. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius. Cloudy changing to sunny intervals by late morning. Sunrise: ; Sunset: . UV: High; Pollution: Low; Pollen: High.Monday 17 June. Maximum daytime temperature: 17 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius. Cloudy changing to sunny intervals by late morning. Sunrise: ; Sunset: . UV: High; Pollution: Low; Pollen: High.
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Tuesday 18 June. Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius. Sunny changing to cloudy in the afternoon. Sunrise: ; Sunset: . UV: High;Tuesday 18 June. Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius. Sunny changing to cloudy in the afternoon. Sunrise: ; Sunset: . UV: High;
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Wednesday 19 June. Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius. Sunny. Sunrise: ; Sunset: . UV: High;Wednesday 19 June. Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 11 degrees Celsius. Sunny. Sunrise: ; Sunset: . UV: High;
Seven day forecast for Portland Harbour - Castle Cove (Beach)
| Time | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | 20:00 | 21:00 | 22:00 | 23:00 |
|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbols |
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Chance of precipitation
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90% | ≥95% | 90% | ≥95% | ≥95% | 90% | 60% | 40% | 20% | 10% |
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13°
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12°
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12°
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12°
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12°
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13°
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13°
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14°
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14°
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14°
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10° | 9° | 9° | 9° | 8° | 9° | 9° | 10° | 11° | 11° |
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S
17
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SSW
21
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S
21
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S
22
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S
24
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S
24
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SSW
27
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SSW
22
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SW
18
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SW
17
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26 | 33 | 33 | 34 | 37 | 38 | 41 | 33 | 28 | 27 |
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0.8 | 0.8 | 0.9 | 1.1 | 1.3 | 1.4 | 1.5 | 1.5 | 1.3 | 1.1 |
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5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 7 | 7 |
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Direction of waves offshore
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M | M | M | M | G | M | G | VG | VG | VG |
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Humidity
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81% | 87% | 91% | 91% | 93% | 93% | 93% | 93% | 94% | 92% |
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UV
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2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | - | - |
| Time | 00:00 | 01:00 | 02:00 | 03:00 | 04:00 | 05:00 | 06:00 | 07:00 | 08:00 | 09:00 | 10:00 | 11:00 | 12:00 | 13:00 | 14:00 | 15:00 | 16:00 | 17:00 | 18:00 | 19:00 | 20:00 | 21:00 | 22:00 | 23:00 |
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| Weather symbols |
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Chance of precipitation
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10% | 10% | 10% | <5% | <5% | 10% | 10% | 10% | 10% | 10% | <5% | <5% | 10% | 40% | 40% | 40% | 10% | 40% | 40% | 10% | 10% | 10% | 10% | 10% |
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14°
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14°
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14°
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13°
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14°
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14°
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14°
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14°
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14°
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14°
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15°
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15°
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16°
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16°
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16°
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15°
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15°
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15°
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14°
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14°
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13°
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13°
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12°
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12°
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11° | 11° | 11° | 11° | 11° | 11° | 11° | 11° | 11° | 11° | 12° | 12° | 12° | 12° | 12° | 11° | 11° | 11° | 11° | 10° | 10° | 10° | 10° | 9° |
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WSW
18
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WSW
17
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WSW
17
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WSW
16
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WSW
16
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SW
16
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SW
15
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SW
15
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SW
15
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SW
16
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SW
17
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SW
18
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SW
19
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SW
19
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SW
20
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SW
20
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SW
20
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SW
20
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SW
20
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SW
20
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SW
19
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WSW
17
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WSW
16
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WSW
16
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27 | 26 | 26 | 25 | 24 | 25 | 24 | 23 | 23 | 25 | 26 | 28 | 30 | 30 | 30 | 31 | 31 | 31 | 31 | 30 | 28 | 25 | 23 | 24 |
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1.0 | 0.9 | 0.9 | 0.8 | 0.8 | 0.7 | 0.7 | 0.7 | 0.6 | 0.6 | 0.5 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.7 | 0.7 | 0.7 | 0.7 | 0.6 | 0.6 | 0.7 | 0.7 |
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6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 6 | 6 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 5 |
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Direction of waves offshore
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VG | VG | VG | VG | VG | VG | VG | VG | VG | E | E | E | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | E | VG |
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Humidity
|
89% | 89% | 87% | 87% | 87% | 87% | 84% | 85% | 83% | 81% | 75% | 74% | 71% | 69% | 70% | 71% | 72% | 74% | 74% | 75% | 75% | 76% | 78% | 78% |
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UV
|
- | - | - | - | - | - | 1 | 1 | 2 | 3 | 5 | 5 | 6 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 1 | 1 | - | - |
| Time | 00:00 | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|---|
| Weather symbols |
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Chance of precipitation
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10% | <5% | 20% | 30% | 60% | 40% | 40% | 20% | 10% |
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12°
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12°
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12°
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13°
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14°
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15°
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15°
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15°
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13°
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9° | 9° | 9° | 10° | 11° | 11° | 11° | 11° | 10° |
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WSW
16
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WSW
16
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WSW
22
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WSW
19
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WSW
19
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SW
22
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SW
22
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WSW
21
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WSW
18
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24 | 25 | 34 | 30 | 31 | 36 | 37 | 34 | 29 |
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0.6 | 0.6 | 0.6 | 0.9 | 1.0 | 1.1 | 1.1 | 1.1 | 1.0 |
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5 | 5 | 4 | 4 | 6 | 6 | 6 | 6 | 6 |
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Direction of waves offshore
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E | E | VG | VG | VG | VG | VG | VG | VG |
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Humidity
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77% | 78% | 81% | 83% | 74% | 77% | 76% | 73% | 80% |
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UV
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- | - | - | 1 | 4 | 5 | 4 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbols |
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Chance of precipitation
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10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% |
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13°
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13°
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13°
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15°
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15°
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16°
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15°
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14°
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10° | 10° | 11° | 12° | 12° | 12° | 13° | 12° |
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WSW
16
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WSW
14
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WSW
13
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SW
14
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SW
16
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SW
17
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SW
14
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SW
9
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26 | 22 | 22 | 25 | 28 | 29 | 23 | 14 |
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0.9 | 0.6 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.4 |
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6 | 5 | 5 | 4 | 4 | 4 | 4 | 4 |
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Direction of waves offshore
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VG | VG | VG | VG | VG | G | VG | VG |
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Humidity
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84% | 86% | 84% | 75% | 71% | 72% | 78% | 88% |
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UV
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- | - | 1 | 5 | 7 | 4 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbols |
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Chance of precipitation
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10% | 10% | 10% | 10% | 10% | 10% | 30% | 10% |
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13°
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12°
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13°
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15°
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16°
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16°
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16°
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14°
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12° | 11° | 12° | 14° | 14° | 14° | 15° | 13° |
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WSW
8
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WSW
7
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SW
7
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SW
8
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SSW
10
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SW
11
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WSW
9
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W
7
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12 | 11 | 12 | 16 | 20 | 20 | 15 | 11 |
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0.3 | 0.2 | 0.2 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
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4 | 6 | 6 | 7 | 7 | 7 | 7 | 7 |
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Direction of waves offshore
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G | G | VG | VG | VG | VG | VG | VG |
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Humidity
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92% | 94% | 89% | 80% | 77% | 76% | 76% | 85% |
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UV
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- | - | 1 | 4 | 7 | 4 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbols |
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Chance of precipitation
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<5% | 10% | 10% | 10% | 10% | 20% | 10% | <5% |
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12°
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12°
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13°
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16°
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18°
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18°
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17°
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14°
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11° | 10° | 11° | 15° | 16° | 16° | 16° | 13° |
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NW
7
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NNW
8
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NNW
8
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NNW
8
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WNW
8
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NW
8
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NW
9
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NNW
9
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12 | 13 | 14 | 16 | 17 | 17 | 16 | 14 |
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0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 | 0.1 |
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7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
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Direction of waves offshore
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G | G | VG | VG | VG | VG | VG | VG |
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Humidity
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90% | 93% | 90% | 72% | 61% | 62% | 62% | 76% |
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UV
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- | - | 1 | 5 | 6 | 4 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbols |
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Chance of precipitation
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<5% | <5% | <5% | <5% | 10% | 10% | <5% | <5% |
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13°
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12°
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13°
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15°
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17°
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17°
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17°
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14°
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11° | 10° | 11° | 14° | 16° | 16° | 15° | 13° |
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NNW
10
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NNW
10
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NNW
10
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NW
9
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WNW
8
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W
10
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W
10
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NW
9
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16 | 16 | 16 | 16 | 17 | 18 | 17 | 14 |
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0.1 | – | – | – | – | – | – | – |
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7 | – | – | – | – | – | – | – |
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Direction of waves offshore
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– | – | – | – | – | – | – |
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VG | VG | VG | VG | VG | VG | VG | VG |
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Humidity
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83% | 86% | 84% | 71% | 61% | 62% | 66% | 80% |
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UV
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- | - | 2 | 4 | 6 | 4 | 1 | - |
Our weather symbols tell you the weather conditions for any given hour in the day or night. This means that the symbol for 9am shows you what you will see from 9am to 10am.
Chance of precipitation represents how likely it is that rain (or other types of precipitation, such as sleet, snow, hail or drizzle) will fall from the sky at a certain time.
This number shows the air temperature for the time period. You can see the temperature in Celsius or Fahrenheit by using the dropdown menu.
Feels like temperature considers other factors, such as wind speed and humidity. This gives you a better idea of how the temperature will actually feel at the time.
Wind gust shows the highest wind speed that you should encounter at that time, as winds peak and lull.
Strong winds are shown in bold for speeds of 29 mph or more.
The arrow shows the direction the wind is blowing. The letters show the direction the wind is blowing from (on a standard 16-point compass).
The number represents the average wind speed expected at that time.
The arrow shows the direction of the wind (up is north). If the arrow points from land to sea, the wind will be blowing out to sea (‘offshore’). The number is the average wind speed.
Beware of offshore winds if you are using inflatables, paddle boards or kayaks. These winds can blow you out to sea. Read more about how wind will affect you at the beach.
Visibility measures the distance at which an object can be clearly seen.
| VP (Very Poor) | Less than 1 km |
| P (Poor) | 1.1 km to 4 km |
| M (Moderate) | 4.1 km to 10 km |
| G (Good) | 10.1 km to 20 km |
| VG (Very Good) | 20.1 km to 40 km |
| E (Excellent) | Greater than 40 km |
Humidity is the amount of water vapor in the air. If there is a lot of water vapour, the humidity will be high. The higher the percentage of humidity, the wetter it will feel outside.
UV exposure index and the protection required to help keep you safe:
No risk of UV - It’s safe to stay outside. Low - You can safely stay outside. Consider sunscreen in direct sunlight. Moderate - Take care during midday hours and do not spend too much time in the sun unprotected. Sunscreen advised. High - Seek shade during midday hours, cover up and wear sunscreen. Very high - Spend time in the shade between 11am and 3pm. Shirt, sunscreen and hat are essential. Extreme - Avoid being outside during midday hours. Shirt, sunscreen and hat essential.
This is the average height of the waves, 1-2 miles out to sea. The height of the waves can vary. The individual waves out to sea or at the beach can be higher than this number. If you are close to the water, keep an eye on the waves to stop you or your belongings being swept away.
Read more about calculating the expected height of the waves at the beach.
This is the average number of seconds between one wave and the next, 1-2 miles out to sea. A long wave period (more than 10 seconds) means the waves at the beach may be more powerful. Lifeguards can give you advice on waves if you’re planning to go into the water.
Read more about the period of waves.
The arrow shows the average direction of the waves 1-2 miles out to sea. It indicates how sheltered the beach will be from these waves. If the arrow points towards land, most of the waves’ power will reach the beach. If the arrow is parallel to or pointing away from land, the wave height is likely to be lower on the beach than it is offshore.
Lifeguards can give you advice on waves if you’re planning to go into the water.
Forecast row information
Tide times
Time Tide times and heights are from Chesil Cove tidal station which is 2.1 miles away. So times may be different at this beach. What does this mean?
Contains ADMIRALTY® tidal data: © Crown Copyright and database right.
Tide times
Tide times and heights are from Chesil Cove tidal station which is 2.1 miles away. So times may be different at this beach. What does this mean?
Contains ADMIRALTY® tidal data: © Crown Copyright and database right.
Tide times
Tide times and heights are from Chesil Cove tidal station which is 2.1 miles away. So times may be different at this beach. What does this mean?
Contains ADMIRALTY® tidal data: © Crown Copyright and database right.
Tide times
Tide times and heights are from Chesil Cove tidal station which is 2.1 miles away. So times may be different at this beach. What does this mean?
Contains ADMIRALTY® tidal data: © Crown Copyright and database right.
Tide times
Tide times and heights are from Chesil Cove tidal station which is 2.1 miles away. So times may be different at this beach. What does this mean?
Contains ADMIRALTY® tidal data: © Crown Copyright and database right.
Tide times
Tide times and heights are from Chesil Cove tidal station which is 2.1 miles away. So times may be different at this beach. What does this mean?
Contains ADMIRALTY® tidal data: © Crown Copyright and database right.
Tide times
Tide times and heights are from Chesil Cove tidal station which is 2.1 miles away. So times may be different at this beach. What does this mean?
Contains ADMIRALTY® tidal data: © Crown Copyright and database right.
Tide times
Tide times and heights are from Chesil Cove tidal station which is 2.1 miles away. So times may be different at this beach. What does this mean?
Contains ADMIRALTY® tidal data: © Crown Copyright and database right.
Tide times
Tide times and heights are from Chesil Cove tidal station which is 2.1 miles away. So times may be different at this beach. What does this mean?
Contains ADMIRALTY® tidal data: © Crown Copyright and database right.
Tide times
Tide times and heights are from Chesil Cove tidal station which is 2.1 miles away. So times may be different at this beach. What does this mean?
Contains ADMIRALTY® tidal data: © Crown Copyright and database right.
Tide times
Tide times and heights are from Chesil Cove tidal station which is 2.1 miles away. So times may be different at this beach. What does this mean?
Contains ADMIRALTY® tidal data: © Crown Copyright and database right.
UK video forecast
South West England weather forecast
Headline:
Turning wetter and windier today, brighter with showers tomorrow.
Today:
Showery rain spreading east across the region through this morning, bringing an increasingly wet day. The heaviest rain will mostly be over higher ground this afternoon. Becoming unseasonably windy in the west with coastal gales possible and feeling cool. Maximum temperature 15 °C.
Tonight:
Cloudy and damp this evening with drizzle and rain at times. Turning drier overnight but showers remain possible. Winds easing though staying breezy on coasts. Much milder than last night. Minimum temperature 10 °C.
Friday:
A mixed day of cloud, warm sunny spells and showers. The showers may be heavy with a risk of thunder but will generally move through quickly. Blustery winds at times. Maximum temperature 18 °C.
Outlook for Saturday to Monday:
Changeable and showery with some heavy downpours and thunderstorms in places, especially on Saturday. Occasional drier periods too, particularly on Sunday and Monday and feeling warm in the sunnier spells.
Updated:
UK long range weather forecast
At first, the weather across the UK is likely to continue to be a mixture of sunny spells and scattered showers, with some longer spells of rain also possible. Some showers are expected to be heavy and could be thundery at times. Temperatures will generally be around or a little below normal for mid-June, and it may well be breezy in places too. Through the weekend and into the following week, confidence in any particular weather pattern dominating becomes low. As such, the best forecast is for fairly typical June weather, with a mixture of weather types. This means some spells of drier, sunny weather but also some showers or longer spells of rain at times. Temperatures will most likely be close to or slightly below average.
Updated:
There is little sign for any one type of weather pattern to dominate during this period. As such, typical conditions for the UK are most probable with a mixture of weather types. All areas can expected to see some spells of drier, sunnier weather, but there will also be showers or longer spells of rain at times. Currently the only signals, weak as they are, hint that rain and showers will tend to be more biased towards the north and west, with any more prolonged drier interludes favouring the south. Temperatures are most likely to be close to or slightly above climatological average.
Updated:
Nearest forecasts
- Portland Harbour - Sandsfoot Castle (Beach) 0.3 miles
- Weymouth - Climate Station 0.7 miles
- Weymouth - Central (Beach) 1.0 miles
- Weymouth 1.2 miles
- Weymouth and Portland 1.8 miles
- Bennetts Water Garden 2.3 miles
- Fortuneswell 2.8 miles
- Bowleaze Cove (Beach) 3.3 miles
- Portland 3.4 miles
- Church Ope Cove (Beach) 4.3 miles