Guernsey weather live forecast

Today's maximum temperature in Guernsey is expected to be 22°C. Select a day from the live weather forecast for Guernsey (St Peter Port) for more weather parameters.

Thursday
20th Aug
22

16

7

5
Friday
21st Aug
22

15

7

5
Saturday
22nd Aug
21

15

6

5
Sunday
23rd Aug
23

16

5

5
Monday
24th Aug
23

16

10

5

5-day weather forecast updated at 04:00 on Wednesday 19th August 2026 GMT

More about Guernsey

Guernsey by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for Guernsey

Fred Olsen: Top cruise offers for 2026/2027

Sale

Explore latest offers on Fred Olsen Cruises in 2026/2027
Find last minute deals or early bird discounts
Filter offers by price, destination, ship & departure point

Go to Fred Olsen deal >>

View all Fred Olsen offers

Cruise deal finder

Destination

The 5-day weather forecast for Guernsey, represented by St Peter Port, (St Peter Port) is provided by the Swiss meteorological agency, meteoblue. Find out more about our data sources.

Guernsey weather forecast by day

Below are the detailed weather forecasts for Guernsey for the next 5 days. The forecasts shown are for St Peter Port and may not represent the whole of Guernsey. Browse more destinations in Guernsey to view more weather forecasts.

Guernsey weather for Thursday 20th August 2026

Expect sunshine and showers in Guernsey with a maximum temperature of 22°C, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 2-5 mm of rainfall expected with 34% chance of some rain and a moderate breeze of 27 kph from the west.

22
°C maximum temperature
16
°C minimum temperature
sunshine and showers
7
hours of sunshine
5
UV index (Moderate)
34
% chance of some rain
<5
mm of rainfall expected
22
°C wind chill
27
kph wind from W

Guernsey weather for Friday 21st August 2026

Expect broken clouds in Guernsey with a maximum temperature of 22°C, maximum UV of 5 (Moderate) and 7 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the north.

22
°C maximum temperature
15
°C minimum temperature
broken clouds
7
hours of sunshine
5
UV index (Moderate)
0
mm of rainfall expected
22
°C wind chill
19
kph wind from N

Guernsey weather for Saturday 22nd August 2026

Expect sunshine and showers in Guernsey with a maximum temperature of 21°C, maximum UV of 5 (Moderate) and 6 hours of bright sunshine. There are 5-10 mm of rainfall expected with 60% chance of some rain and a moderate breeze of 20 kph from the north-east.

21
°C maximum temperature
15
°C minimum temperature
sunshine and showers
6
hours of sunshine
5
UV index (Moderate)
60
% chance of some rain
<10
mm of rainfall expected
0
no heat & humidity
20
kph wind from NE

Guernsey weather for Sunday 23rd August 2026

Expect isolated thunderstorms in Guernsey with a maximum temperature of 23°C, maximum UV of 5 (Moderate) and 5 hours of bright sunshine. There are 5-10 mm of rainfall expected with 23% chance of some rain and a moderate breeze of 24 kph from the north-east.

23
°C maximum temperature
16
°C minimum temperature
isolated thunderstorms
5
hours of sunshine
5
UV index (Moderate)
23
% chance of some rain
<10
mm of rainfall expected
23
°C wind chill
24
kph wind from NE

Guernsey weather for Monday 24th August 2026

Expect scattered clouds in Guernsey with a maximum temperature of 23°C, maximum UV of 5 (Moderate) and 10 hours of bright sunshine. There are 0 mm of rainfall expected and a gentle breeze of 19 kph from the north-east.