Castlebay (Na h-Eileanan Siar) weather
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Forecast days
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Today. Maximum daytime temperature: 10 degrees Celsius; Minimum nighttime temperature: 7 degrees Celsius. Heavy rain. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Low.Today. Maximum daytime temperature: 10 degrees Celsius; Minimum nighttime temperature: 7 degrees Celsius. Heavy rain. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Low.
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Tuesday 30 April. Maximum daytime temperature: 11 degrees Celsius; Minimum nighttime temperature: 9 degrees Celsius. Sunny intervals changing to cloudy by late morning. Sunrise: ; Sunset: . UV: Low; Pollution: Low; Pollen: Moderate.Tuesday 30 April. Maximum daytime temperature: 11 degrees Celsius; Minimum nighttime temperature: 9 degrees Celsius. Sunny intervals changing to cloudy by late morning. Sunrise: ; Sunset: . UV: Low; Pollution: Low; Pollen: Moderate.
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Wednesday 1 May. Maximum daytime temperature: 12 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius. Overcast changing to sunny intervals by lunchtime. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Moderate.Wednesday 1 May. Maximum daytime temperature: 12 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius. Overcast changing to sunny intervals by lunchtime. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Moderate.
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Thursday 2 May. Maximum daytime temperature: 14 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius. Cloudy changing to sunny intervals by late morning. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Moderate.Thursday 2 May. Maximum daytime temperature: 14 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius. Cloudy changing to sunny intervals by late morning. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Moderate.
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Friday 3 May. Maximum daytime temperature: 14 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius. Sunny. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Moderate.Friday 3 May. Maximum daytime temperature: 14 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius. Sunny. Sunrise: ; Sunset: . UV: Moderate; Pollution: Low; Pollen: Moderate.
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Saturday 4 May. Maximum daytime temperature: 13 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius. Sunny. Sunrise: ; Sunset: . UV: Moderate;Saturday 4 May. Maximum daytime temperature: 13 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius. Sunny. Sunrise: ; Sunset: . UV: Moderate;
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Sunday 5 May. Maximum daytime temperature: 12 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius. Overcast. Sunrise: ; Sunset: . UV: Moderate;Sunday 5 May. Maximum daytime temperature: 12 degrees Celsius; Minimum nighttime temperature: 10 degrees Celsius. Overcast. Sunrise: ; Sunset: . UV: Moderate;
Seven day forecast for Castlebay
| Time | 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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≥95% | ≥95% | 70% | 60% | 60% | 60% | 60% | 50% | 50% |
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8°
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8°
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8°
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8°
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8°
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8°
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8°
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8°
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8°
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5° | 5° | 5° | 4° | 5° | 5° | 5° | 5° | 5° |
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E
13
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ENE
14
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NE
14
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NNE
15
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NNE
14
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NNE
14
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N
13
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N
13
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NNW
13
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17 | 19 | 21 | 23 | 22 | 21 | 21 | 20 | 19 |
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M | M | G | G | G | G | G | VG | G |
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Humidity
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90% | 92% | 91% | 92% | 93% | 94% | 93% | 93% | 92% |
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UV
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2 | 2 | 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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20% | 50% | 10% | 10% | 40% | 10% | 10% | <5% | <5% | <5% | 10% | 10% | 80% | 80% | 90% | 90% | 90% | 80% | 50% | 20% | 10% | 10% | 10% | 10% |
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8°
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8°
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8°
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8°
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8°
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8°
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8°
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8°
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9°
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9°
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9°
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10°
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10°
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9°
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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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11°
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11°
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10°
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10°
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10°
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5° | 6° | 6° | 6° | 6° | 6° | 6° | 6° | 6° | 7° | 7° | 7° | 6° | 6° | 6° | 7° | 7° | 7° | 7° | 7° | 7° | 7° | 7° | 7° |
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NNW
10
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NW
8
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NNW
6
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WNW
5
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E
5
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ESE
6
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ESE
7
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SE
8
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SE
10
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ESE
12
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ESE
13
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ESE
14
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E
16
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E
16
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ENE
17
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E
20
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ESE
21
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ESE
22
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SE
21
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SE
21
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SE
20
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SE
20
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SE
20
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SE
20
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16 | 13 | 10 | 8 | 7 | 8 | 10 | 12 | 14 | 16 | 18 | 21 | 23 | 24 | 27 | 30 | 32 | 33 | 32 | 33 | 31 | 30 | 30 | 29 |
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VG | VG | VG | VG | G | VG | VG | VG | VG | VG | VG | VG | G | M | M | M | G | G | G | VG | VG | VG | VG | VG |
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Humidity
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91% | 90% | 89% | 90% | 90% | 90% | 89% | 87% | 86% | 84% | 79% | 81% | 82% | 84% | 85% | 87% | 88% | 87% | 88% | 86% | 86% | 87% | 87% | 86% |
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UV
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- | - | - | - | - | - | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 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 symbols |
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Chance of precipitation
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10% | 10% | 10% | 10% | 10% | <5% | <5% | <5% | <5% |
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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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12°
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12°
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12°
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11°
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6° | 6° | 6° | 7° | 9° | 11° | 11° | 10° | 9° |
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SE
19
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SE
19
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SE
16
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SE
13
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ESE
10
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E
6
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NE
7
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NNE
9
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NNE
12
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28 | 27 | 23 | 19 | 14 | 8 | 9 | 11 | 15 |
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VG | VG | VG | G | G | VG | VG | G | VG |
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Humidity
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87% | 87% | 86% | 87% | 81% | 80% | 83% | 84% | 84% |
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UV
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- | - | - | 1 | 2 | 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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<5% | 10% | <5% | <5% | <5% | <5% | <5% | <5% |
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11°
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10°
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10°
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12°
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13°
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14°
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14°
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12°
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8° | 8° | 7° | 9° | 11° | 11° | 11° | 9° |
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NNE
12
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NNE
12
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ENE
14
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NE
15
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NE
15
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N
17
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N
18
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NE
18
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15 | 15 | 19 | 19 | 19 | 21 | 22 | 23 |
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VG | VG | VG | VG | VG | VG | VG | VG |
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Humidity
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88% | 91% | 91% | 86% | 82% | 80% | 80% | 83% |
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UV
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- | - | 1 | 3 | 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
|
<5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% |
|
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11°
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10°
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10°
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12°
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13°
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14°
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14°
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12°
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8° | 8° | 8° | 10° | 12° | 12° | 12° | 10° |
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ENE
16
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NNE
14
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NNE
13
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NNE
12
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N
10
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NNW
11
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NNW
12
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N
12
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20 | 18 | 16 | 15 | 13 | 14 | 15 | 15 |
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VG | VG | VG | VG | VG | G | VG | G |
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Humidity
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86% | 87% | 87% | 84% | 82% | 82% | 82% | 86% |
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UV
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- | - | 1 | 3 | 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
|
<5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% |
|
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11°
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11°
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11°
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12°
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13°
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13°
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13°
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11°
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9° | 8° | 8° | 10° | 11° | 12° | 11° | 9° |
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NNE
12
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NE
11
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ESE
12
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ESE
10
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E
8
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E
7
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NE
10
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NNE
10
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15 | 14 | 15 | 13 | 10 | 10 | 12 | 13 |
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G | G | G | G | G | G | G | G |
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Humidity
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88% | 90% | 89% | 86% | 84% | 84% | 85% | 88% |
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UV
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- | - | 1 | 3 | 5 | 3 | 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
|
10% | 10% | 10% | 10% | 10% | 10% | 10% | 10% |
|
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11°
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11°
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10°
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11°
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12°
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12°
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12°
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11°
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9° | 8° | 8° | 9° | 10° | 10° | 10° | 9° |
|
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NE
11
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NE
11
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NE
11
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ENE
12
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ESE
12
|
ENE
12
|
ENE
12
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NE
13
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14 | 14 | 14 | 15 | 16 | 15 | 16 | 17 |
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G | G | G | G | G | G | G | VG |
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Humidity
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88% | 89% | 89% | 87% | 85% | 85% | 86% | 86% |
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UV
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- | - | 1 | 2 | 4 | 3 | 2 | - |
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
UK video forecast
Highlands & Eilean Siar weather forecast
Headline:
Bright start then rain spreading from south.
Today:
A mainly dry bright start, though a few showers in northwest. CLoud and rain reaching Lochaber arround midday extending north across all parts through the afternoon, while the south turns brighter with some showers later. Maximum temperature 13 °C.
Tonight:
Rather cloudy this evening with some showers, just a few sunny or clear intervals. Overnight becoming mostly dry and clear. Minimum temperature 4 °C.
Tuesday:
A sunny start, and remaining dry and bright across North and East Highland. Cloud and a few showers will spread to the south and west including the Isles. Warmer, Maximum temperature 16 °C.
Outlook for Wednesday to Friday:
The west dry with some sunshine on Wednesday, patchy rain and haar in east. Thursday and Friday mainly sunny, warm or very warm, haar at first in east.
Updated:
UK long range weather forecast
A fairly uncertain period through the bank holiday weekend with more likely a warm but cloudy period with bright spells, greatest in the north and showers more likely in the south. However there is also potential for a more unsettled spell to spread from the west with fresh winds and bands of rain mid-weekend, signals still unclear regards this. Into the new week all areas are likely to see a mixture of showery periods or spells of rain, though generally drier conditions expected. Overall, southern parts of the UK will probably be driest and sunniest with a north-westerly wind most likely bringing more changeable conditions across the north or northwest. Temperatures should remain close to or a little above normal for early May.
Updated:
In this period, the chances of unsettled weather are slightly less than usual in the north and about the same as usual further south. Therefore, some spells of wet weather are likely for all, but perhaps especially across southern areas while the driest conditions relative to normal are probably further north. The chance of below or above average temperatures is fairly balanced overall, but it is worth noting that average temperatures themselves rise by around 1C per week at this time of year.
Updated:
