Cold Knap, Barry (Beach) (Vale of Glamorgan) 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: 13 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius. Overcast changing to heavy rain by late morning. Sunrise: 06:56; Sunset: 19:41. UV: Low; Pollution: Low; Pollen: Low.Today. Maximum daytime temperature: 13 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius. Overcast changing to heavy rain by late morning. Sunrise: 06:56; Sunset: 19:41. UV: Low; Pollution: Low; Pollen: Low.
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Thursday 30 March. Maximum daytime temperature: 14 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius. Cloudy changing to sunny intervals by lunchtime. Sunrise: 06:54; Sunset: 19:42. UV: Moderate; Pollution: Low; Pollen: Moderate.Thursday 30 March. Maximum daytime temperature: 14 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius. Cloudy changing to sunny intervals by lunchtime. Sunrise: 06:54; Sunset: 19:42. UV: Moderate; Pollution: Low; Pollen: Moderate.
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Friday 31 March. Maximum daytime temperature: 11 degrees Celsius; Minimum nighttime temperature: 9 degrees Celsius. Heavy rain changing to cloudy by nighttime. Sunrise: 06:52; Sunset: 19:44. UV: Low; Pollution: Low; Pollen: Low.Friday 31 March. Maximum daytime temperature: 11 degrees Celsius; Minimum nighttime temperature: 9 degrees Celsius. Heavy rain changing to cloudy by nighttime. Sunrise: 06:52; Sunset: 19:44. UV: Low; Pollution: Low; Pollen: Low.
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Saturday 1 April. Maximum daytime temperature: 11 degrees Celsius; Minimum nighttime temperature: 7 degrees Celsius. Light rain changing to cloudy by nighttime. Sunrise: 06:50; Sunset: 19:46. UV: Moderate; Pollution: Low; Pollen: Moderate.Saturday 1 April. Maximum daytime temperature: 11 degrees Celsius; Minimum nighttime temperature: 7 degrees Celsius. Light rain changing to cloudy by nighttime. Sunrise: 06:50; Sunset: 19:46. UV: Moderate; Pollution: Low; Pollen: Moderate.
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Sunday 2 April. Maximum daytime temperature: 11 degrees Celsius; Minimum nighttime temperature: 5 degrees Celsius. Sunny intervals changing to cloudy by late morning. Sunrise: 06:47; Sunset: 19:47. UV: Moderate; No pollen data.Sunday 2 April. Maximum daytime temperature: 11 degrees Celsius; Minimum nighttime temperature: 5 degrees Celsius. Sunny intervals changing to cloudy by late morning. Sunrise: 06:47; Sunset: 19:47. UV: Moderate; No pollen data.
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Monday 3 April. Maximum daytime temperature: 11 degrees Celsius; Minimum nighttime temperature: 5 degrees Celsius. Cloudy. Sunrise: 06:45; Sunset: 19:49. UV: Moderate;Monday 3 April. Maximum daytime temperature: 11 degrees Celsius; Minimum nighttime temperature: 5 degrees Celsius. Cloudy. Sunrise: 06:45; Sunset: 19:49. UV: Moderate;
Six day forecast for Cold Knap, Barry (Beach)
| 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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Chance of precipitation
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10% | 40% | 80% | 10% | <5% | 10% | 10% | 20% | 20% | 20% | 20% | 70% | 20% | 10% | 10% | 10% | 20% | 20% | 60% | 90% | 80% | 80% | 80% | 50% |
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10°
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10°
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10°
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10°
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10°
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10°
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10°
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10°
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10°
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10°
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11°
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11°
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11°
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12°
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12°
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12°
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13°
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12°
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12°
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11°
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11°
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11°
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11°
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11°
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9° | 9° | 8° | 8° | 8° | 8° | 8° | 8° | 8° | 8° | 9° | 9° | 9° | 9° | 10° | 10° | 10° | 9° | 9° | 9° | 9° | 9° | 9° | 9° |
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SSW
5
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SSW
6
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S
9
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SSE
10
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S
10
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SSE
8
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SE
8
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SSE
9
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SSE
11
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SSE
11
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S
10
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S
14
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SSW
14
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SSW
14
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S
13
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S
13
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SSE
12
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SSE
12
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S
13
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S
13
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S
12
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SSW
12
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SSW
12
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SW
11
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14 | 17 | 16 | 16 | 18 | 14 | 12 | 17 | 22 | 22 | 21 | 25 | 25 | 25 | 23 | 21 | 18 | 20 | 24 | 23 | 23 | 23 | 23 | 21 |
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0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.5 | 0.6 | 0.6 | 0.6 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 | 0.7 |
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13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 |
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Direction of waves offshore
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M | M | M | M | M | G | G | M | M | M | G | G | G | G | G | G | G | G | G | M | G | M | G | VG |
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Humidity
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92% | 91% | 93% | 93% | 94% | 93% | 94% | 96% | 97% | 97% | 95% | 94% | 93% | 93% | 91% | 89% | 89% | 93% | 93% | 94% | 93% | 93% | 92% | 91% |
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UV
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- | - | - | - | - | - | - | - | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | - | - | - | - |
| Time | 00:00 | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|---|
| Weather symbol |
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Chance of precipitation
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10% | 20% | 20% | 40% | 30% | 30% | 30% | 40% | 90% |
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11°
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11°
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10°
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10°
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11°
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13°
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13°
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12°
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10°
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8° | 8° | 8° | 8° | 9° | 10° | 11° | 9° | 7° |
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SW
14
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WSW
14
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WSW
14
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WSW
12
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SW
15
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WSW
16
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WSW
14
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SSW
14
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SSE
17
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27 | 26 | 26 | 24 | 26 | 28 | 25 | 23 | 27 |
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0.8 | 0.8 | 0.8 | 0.8 | 0.8 | 0.9 | 0.9 | 0.7 | 0.7 |
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12 | 12 | 12 | 12 | 12 | 8 | 10 | 12 | 12 |
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Direction of waves offshore
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VG | VG | VG | VG | VG | G | VG | VG | M |
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Humidity
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90% | 90% | 91% | 89% | 85% | 79% | 72% | 80% | 90% |
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UV
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- | - | - | - | 2 | 3 | 2 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
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Chance of precipitation
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90% | 90% | 90% | 80% | 70% | 80% | 50% | 20% |
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11°
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10°
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10°
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10°
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10°
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10°
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10°
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10°
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7° | 7° | 7° | 6° | 6° | 6° | 6° | 6° |
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S
19
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SSE
18
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SW
19
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W
24
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W
26
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W
27
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W
25
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W
22
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32 | 30 | 30 | 39 | 43 | 44 | 40 | 35 |
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0.9 | 0.9 | 1.2 | 1.9 | 2.1 | 2.5 | 2.2 | 2.0 |
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6 | 6 | 4 | 6 | 7 | 7 | 7 | 7 |
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Direction of waves offshore
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G | M | M | M | M | M | G | M |
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Humidity
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90% | 89% | 90% | 91% | 88% | 86% | 87% | 88% |
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UV
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- | - | - | 1 | 2 | 2 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
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Chance of precipitation
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50% | 50% | 50% | 40% | 40% | 30% | 30% | 10% |
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9°
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9°
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9°
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9°
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10°
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11°
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10°
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9°
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6° | 5° | 5° | 6° | 7° | 8° | 7° | 7° |
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W
21
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W
20
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WNW
19
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WNW
18
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WNW
17
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WNW
18
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WNW
15
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NW
13
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35 | 33 | 30 | 29 | 28 | 30 | 24 | 22 |
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1.8 | 1.7 | 1.4 | 1.2 | 1.0 | 0.9 | 0.9 | 0.8 |
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7 | 6 | 6 | 10 | 13 | 13 | 12 | 12 |
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Direction of waves offshore
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M | M | M | M | G | G | G | G |
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Humidity
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88% | 89% | 89% | 87% | 80% | 78% | 79% | 84% |
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UV
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- | - | 1 | 1 | 3 | 2 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
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Chance of precipitation
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10% | <5% | <5% | <5% | 10% | 10% | <5% | 10% |
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9°
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8°
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8°
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9°
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11°
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11°
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11°
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9°
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6° | 6° | 6° | 7° | 9° | 9° | 9° | 7° |
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NW
12
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NNW
10
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N
9
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N
9
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N
10
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N
11
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N
9
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NNW
8
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19 | 17 | 16 | 17 | 19 | 19 | 15 | 13 |
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0.7 | 0.7 | 0.6 | 0.6 | 0.5 | 0.4 | 0.4 | 0.3 |
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12 | 12 | 11 | 11 | 11 | 11 | 10 | 10 |
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Direction of waves offshore
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G | VG | G | VG | VG | VG | VG | VG |
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Humidity
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85% | 86% | 83% | 75% | 69% | 65% | 72% | 78% |
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UV
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- | - | 1 | 2 | 3 | 2 | 1 | - |
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
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Chance of precipitation
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<5% | <5% | 10% | 10% | 10% | 10% | 10% | 10% |
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8°
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7°
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5°
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7°
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9°
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10°
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10°
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8°
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6° | 5° | 3° | 5° | 8° | 9° | 8° | 6° |
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NNE
7
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E
7
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E
7
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ENE
8
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E
7
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E
7
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NE
7
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ENE
6
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12 | 12 | 12 | 15 | 15 | 14 | 12 | 11 |
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0.3 | 0.3 | 0.3 | 0.3 | 0.2 | – | – | – |
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10 | 10 | 10 | 10 | 10 | – | – | – |
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Direction of waves offshore
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– | – | – |
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VG | VG | VG | VG | VG | VG | VG | G |
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Humidity
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83% | 85% | 86% | 76% | 65% | 66% | 70% | 78% |
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UV
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- | - | 1 | 2 | 4 | 2 | 1 | - |
Chance of precipitation represents how likely it is that rain (or other types of precipitation, such as sleet, snow, hail and 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). The blue behind the arrow represents the sea, and yellow is the land. If the arrow points from yellow to blue, the wind will be blowing from land to sea (‘offshore’). The number is the average wind speed.
Beware of offshore winds if you are using inflatables, paddle boards or kayaks, because 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 that the waves are going 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 or pointing away from land, the height of the waves on the beach is likely to be lower than the height of waves offshore.
Lifeguards can give you advice on waves if you’re planning to go into the water.
Tide times
Time © Crown Copyright and database right.
Tide times
© Crown Copyright and database right.
Tide times
© Crown Copyright and database right.
Tide times
© Crown Copyright and database right.
Tide times
© Crown Copyright and database right.
Tide times
© Crown Copyright and database right.
Tide times
© Crown Copyright and database right.
Wales weather forecast
Headline:
Turning increasingly mild and murky with rain at times.
This Evening and Tonight:
Staying generally cloudy this evening, but some late brightness is possible in places. Mostly cloudy overnight with a few clearer spells towards the north and east. Turning increasingly murky and damp over some hills with drizzle at times. Rather mild. Minimum temperature 7 °C.
Wednesday:
Cloudy and breezy for most of Wales with occasional rain and drizzle. Heavy rain moving east during the afternoon. Feeling much milder, especially in the north during any sunny spells. Maximum temperature 16 °C.
Outlook for Thursday to Saturday:
Sunshine and showers on Thursday and feeling rather warm in the sunshine. Heavy rain on Friday with a chance of stronger winds. Breezy and showery on Saturday. Turning cooler.
Updated:
UK long range weather forecast
The start of this period is most likely to be changeable. Showers or longer spells of rain remain prevalent, with heavy bursts still likely in places on Sunday. Drier and brighter interludes are possible as well, mainly across western regions, however these may be short-lived as further bands of rain are expected to arrive from the west. Eastern coasts may be rather grey and misty at times. The latter part of the period looks likely to become more settled, albeit with some wetter interludes, these most likely in the south and west of the country. Stronger winds at times, but temperatures remaining close to average, feeling pleasant in any sunshine. There is potential for overnight frost where skies are clear in the north and east.
Updated:
Throughout this period there is likely to be a split in conditions between the north and south of the UK. Any unsettled weather is likely to take a southerly track, while higher pressure to the north should provide some generally drier weather here. Overall, it is likely to be somewhat drier than March across the country. Temperatures are uncertain, but there is a potential for cooler conditions at times, especially in the north and east, with a chance of overnight frosts.
Updated:
