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 18°C and the coldest is February with 9°C.
In the table below you can quickly see the monthly average weather in Guernsey, the monthly temperature or when the precipitation is highest. The monthly average climate data is based on data from the last 30 years.
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Guernsey has a oceanic climate. There is rainfall during all months of the year. The average annual temperature for Guernsey is 13° degrees and there is about 463 mm 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.
What is the average Guernsey weather like in a given month? Let's find out! Click on a month to check all the monthly averages for sunshine, temperature highs and lows, percentage chance of rain per day, snowfall accumulation and number of rainy days.
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