9 to 18°C
2526 hours
sunshine per day
463 mm
177 days
188 days
0 days

Climate of Guernsey

Guernsey has a oceanic climate. There is rainfall during all months of the year. The average annual temperature for Guernsey is 27° degrees and there is about 182 inch of rain in a year. It is dry for 131 days a year with an average humidity of 80% and an UV-index of 4.

Climate averages for the whole year

  • Day: the average daily temperature during the day is between 9°C and 18°C
  • Night:the average nighttime temperature is between 7°C and 17°C
  • Rain: it rains 188 days and there is a total of approximately 463 mm rainfall
  • Sun hours: throughout the year there are 2526 sun hours
Maximum temperature: between 9°C and 18°C
Warmest month: 18°C in August
Coldest month: 9°C in February
Night temperature: between 7°C and 17°C
Dry days: 177 days
Days with rain: 188 days
Days with snow: 0 days
Total rain sum: 463 mm
Hours of sunshine: 2526 hours

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Temperature graph

This graph shows the average maximum temperature (red) and minimum temperature (blue) for Guernsey.

Precipitation graph

This graph shows the average amount of rainfall per month for Guernsey.

Climate table of Guernsey

In this climate table you can see at a glance what the average weather per month is for Guernsey. The data has been collected over a 30-year period, from which an average per month has been derived. From year to year the differences may be larger or smaller, but with this climate table you have a good idea of what the weather for Guernsey might be like in a given month.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Day temp. (°F) 50 48 50 52 55 59 63 64 63 60 56 52
Night temp. (°F) 47 45 46 49 53 57 61 62 61 57 53 49
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Precipitation (inch) 23 16 13 9 8 9 10 13 11 18 28 24
Days with rain 22 17 16 13 12 10 13 13 12 17 22 21
Dry days 9 11 15 17 19 20 18 18 18 14 8 10
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sun hours per day 4 4 6 10 9 9 10 9 9 5 4 4
Wind force (Bft) 5 5 5 4 4 4 4 4 4 5 5 5
UV-index 3 2 3 4 4 4 5 5 5 4 3 3

Best time to visit Guernsey

The best time to visit Guernsey is in August. In this period you have a pleasant temperature and almost no precipitation. On the island of Guernsey, the warmest month is August with 64°F and the coldest is February with 48°F.

Climate of Guernsey by month

What is the average climate in a given month for Guernsey? Click on a month to see all monthly averages for sunshine, maximum and minimum temperatures, percent chance of rain per day, snowfall and number of rainy days.

Guernsey weather experiences

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