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Thunderstorms and heatwave conditions
Thunderstorm warnings continue across much of the UK until Monday, 17th August, with a risk of impacts from heavy rain, flash flooding, lightning and hail.
Read moreGuernsey Airport (Guernsey) weather
Find a forecast
Forecast days
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Today. Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 16 degrees Celsius. Cloudy changing to sunny intervals by late morning. Sunrise: 06:02; Sunset: 20:26. UV: High; Pollution: Low; Pollen: Moderate.
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Sunday 16 August. Maximum daytime temperature: 18 degrees Celsius; Minimum nighttime temperature: 16 degrees Celsius. Heavy rain changing to cloudy by late morning. Sunrise: 06:04; Sunset: 20:24. UV: Moderate; Pollution: Low; Pollen: Moderate.
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Monday 17 August. Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 16 degrees Celsius. Light showers changing to sunny in the afternoon. Sunrise: 06:05; Sunset: 20:22. UV: Moderate; Pollution: Low; Pollen: Moderate.
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Tuesday 18 August. Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 17 degrees Celsius. Sunny intervals. Sunrise: 06:07; Sunset: 20:21. UV: High; Pollution: Low; Pollen: Moderate.
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Wednesday 19 August. Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 18 degrees Celsius. Cloudy. Sunrise: 06:08; Sunset: 20:19. UV: Moderate; No pollen data.
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Thursday 20 August. Maximum daytime temperature: 19 degrees Celsius; Minimum nighttime temperature: 17 degrees Celsius. Cloudy changing to light showers by late morning. Sunrise: 06:10; Sunset: 20:17. UV: Moderate;
Six day forecast for Guernsey Airport
Today (15 August 2020)
| Time | Now | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Weather symbol |
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| Chance of precipitation | 10% | 10% | 10% | <5% | <5% | 10% | <5% | <5% | 10% | 10% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | <5% | 10% | 50% |
| Temperature (°C) |
18°
|
18°
|
17°
|
17°
|
17°
|
17°
|
17°
|
17°
|
18°
|
18°
|
18°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
19°
|
18°
|
18°
|
17°
|
17°
|
17°
|
17°
|
| Feels like temperature (°C) | 17° | 17° | 17° | 17° | 16° | 17° | 17° | 17° | 17° | 17° | 17° | 18° | 18° | 18° | 18° | 18° | 18° | 18° | 17° | 17° | 17° | 17° | 17° | 17° |
| Wind direction and speed (miles per hour) |
W
10
|
W
9
|
W
9
|
W
10
|
W
9
|
W
8
|
W
7
|
W
7
|
WSW
8
|
WSW
8
|
WSW
9
|
W
8
|
WSW
8
|
WSW
8
|
WSW
8
|
W
8
|
WNW
8
|
NW
7
|
NNW
8
|
NNW
7
|
N
7
|
N
5
|
N
5
|
N
5
|
| Wind gust (miles per hour) | 16 | 15 | 15 | 17 | 17 | 14 | 13 | 12 | 10 | 10 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 10 | 8 | 9 | 8 |
| Visibility | M | M | M | M | M | M | G | G | G | G | G | VG | VG | VG | VG | VG | VG | VG | VG | VG | VG | G | G | G |
| Humidity | 95% | 96% | 96% | 95% | 94% | 95% | 94% | 92% | 89% | 88% | 85% | 82% | 80% | 79% | 79% | 78% | 78% | 78% | 80% | 83% | 88% | 88% | 89% | 89% |
| UV | - | - | - | - | - | - | - | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 1 | - | - | - |
Sunday (16 August 2020)
| 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 | 30% | 30% | 80% | 80% | 40% | 10% | 10% | 10% | 10% |
| Temperature (°C) |
17°
|
16°
|
16°
|
16°
|
17°
|
18°
|
18°
|
17°
|
17°
|
| Feels like temperature (°C) | 17° | 17° | 17° | 15° | 17° | 17° | 18° | 17° | 16° |
| Wind direction and speed (miles per hour) |
NE
4
|
NE
4
|
ENE
4
|
NNE
8
|
E
8
|
SE
8
|
SSW
7
|
WSW
7
|
WSW
8
|
| Wind gust (miles per hour) | 7 | 6 | 6 | 13 | 10 | 11 | 8 | 9 | 11 |
| Visibility | G | G | G | M | VG | VG | VG | VG | VG |
| Humidity | 92% | 94% | 95% | 95% | 91% | 86% | 86% | 88% | 90% |
| UV | - | - | - | 1 | 3 | 5 | 3 | 1 | - |
Monday (17 August 2020)
| 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 | 20% | 40% | 40% | 40% | 30% | <5% | <5% | <5% |
| Temperature (°C) |
16°
|
17°
|
16°
|
17°
|
18°
|
19°
|
18°
|
17°
|
| Feels like temperature (°C) | 15° | 15° | 14° | 15° | 15° | 15° | 15° | 15° |
| Wind direction and speed (miles per hour) |
W
11
|
W
13
|
WSW
14
|
WSW
16
|
WSW
17
|
WSW
18
|
WSW
16
|
SW
14
|
| Wind gust (miles per hour) | 15 | 17 | 19 | 21 | 23 | 24 | 21 | 18 |
| Visibility | G | G | G | M | G | G | G | VG |
| Humidity | 90% | 88% | 91% | 87% | 86% | 86% | 87% | 90% |
| UV | - | - | 1 | 3 | 5 | 3 | 1 | - |
Tuesday (18 August 2020)
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
| Chance of precipitation | 10% | 10% | 10% | 10% | 10% | <5% | <5% | <5% |
| Temperature (°C) |
17°
|
16°
|
17°
|
18°
|
19°
|
19°
|
18°
|
17°
|
| Feels like temperature (°C) | 15° | 14° | 15° | 16° | 17° | 17° | 16° | 15° |
| Wind direction and speed (miles per hour) |
SW
13
|
SW
14
|
SW
12
|
SW
13
|
SW
14
|
WSW
13
|
WSW
14
|
WSW
13
|
| Wind gust (miles per hour) | 17 | 17 | 16 | 17 | 18 | 17 | 17 | 17 |
| Visibility | G | G | G | G | VG | VG | VG | VG |
| Humidity | 92% | 91% | 90% | 88% | 87% | 88% | 89% | 91% |
| UV | - | - | 1 | 4 | 7 | 4 | 1 | - |
Wednesday (19 August 2020)
| 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 | <5% | 10% | 10% | 10% | 10% | 10% | 20% | 20% |
| Temperature (°C) |
17°
|
17°
|
17°
|
18°
|
18°
|
19°
|
18°
|
19°
|
| Feels like temperature (°C) | 15° | 15° | 15° | 15° | 16° | 16° | 15° | 15° |
| Wind direction and speed (miles per hour) |
WSW
13
|
SW
13
|
SSW
13
|
SSW
15
|
S
16
|
S
16
|
SSE
19
|
S
22
|
| Wind gust (miles per hour) | 17 | 17 | 17 | 20 | 20 | 21 | 25 | 29 |
| Visibility | VG | VG | G | G | VG | M | M | M |
| Humidity | 92% | 93% | 91% | 89% | 88% | 86% | 89% | 89% |
| UV | - | - | 1 | 3 | 5 | 3 | 1 | - |
Thursday (20 August 2020)
| Time | 01:00 | 04:00 | 07:00 | 10:00 | 13:00 | 16:00 | 19:00 | 22:00 |
|---|---|---|---|---|---|---|---|---|
| Weather symbol |
|
|
|
|
|
|
|
|
| Chance of precipitation | 20% | 40% | 20% | 30% | 10% | 10% | 10% | 10% |
| Temperature (°C) |
19°
|
18°
|
18°
|
18°
|
19°
|
19°
|
18°
|
18°
|
| Feels like temperature (°C) | 15° | 14° | 14° | 15° | 16° | 16° | 15° | 14° |
| Wind direction and speed (miles per hour) |
SSW
23
|
SSW
24
|
SW
20
|
SSW
18
|
SSW
16
|
SW
17
|
SW
18
|
SSW
20
|
| Wind gust (miles per hour) | 29 | 31 | 26 | 23 | 20 | 21 | 22 | 26 |
| Visibility | G | G | G | G | VG | VG | VG | VG |
| Humidity | 91% | 91% | 91% | 88% | 86% | 84% | 83% | 84% |
| UV | - | - | 1 | 3 | 5 | 3 | 1 | - |
WARNING
Flood warnings
Flood alerts in force
for Channel Islands.
South West England weather forecast
Headline:
Warm and cloudy overnight with a risk of thundery downpours.
This Evening and Tonight:
Showers will continue through this evening and overnight, potentially turning thundery and heavy at times. Remaining cloudy and humid with patches of fog developing in the early hours. Minimum temperature 15 °C.
Saturday:
Fog may be slow to clear in places, with the rest of the day remaining cloudy. Showers will continue throughout, becoming heavy at times and perhaps thundery towards the east. Maximum temperature 22 °C.
Outlook for Sunday to Tuesday:
Rather cloudy with heavy and potentially thundery downpours on Sunday, becoming more persistent on Monday. Brighter on Tuesday with spells of sunshine possible but perhaps the odd thundery shower too.
Updated:
UK long range weather forecast
The beginning of this period is likely to be generally unsettled with showers and longer spells of rain at times, potentially becoming heavy in places. There is also a chance that there could be some further thundery weather, although this would most likely be confined towards the east and southeast of the UK. It is likely to be windier than of late, especially in the south and west where there is also a risk of gales. Temperatures should start rather warm for many, despite the spells of unsettled weather. However, temperatures may cool slightly by the end of this period with freshening winds from the northwest likely to create a more widespread risk of gales.
Updated:
Although confidence is low for this period, it is likely that conditions will become more changeable with drier and brighter days interspersed with periods of rain and strengthening winds. Temperatures should be around the average for this time of year. Towards the end of this period, there are some tentative signs that high pressure could begin to dominate, especially across the south of the UK, with a return to more settled conditions.
Updated:
