The climate of Guernsey
The current climate in Guernsey features temperatures ranging from a high of 21°C to a low of 10°C throughout the year. The average yearly temperature is around 15°C. At night, temperatures in the colder months average around 6°C and in the warmer months around 15°C.
Average temperatures and precipitation
This chart shows the average monthly maximum and minimum temperatures (in degrees Celsius) and average monthly rainfall (in millimeters) for Guernsey.
Temperature records
The highest temperature recorded in Guernsey in recent years was 35°C in July 2022. The lowest daytime temperature recorded was -1°C in February 2018.
Rainfall amount
On average, Guernsey receives 859 mm of precipitation each year. For comparison, New York gets 1142 mm of precipitation annually.
Best time to visit Guernsey?
The best time to visit Guernsey for sunny weather is June through September. During this period, you'll have nice temperatures and not too much rain, making it a great time to visit Guernsey. In the other months of the year, there's too much rain or the temperature isn't ideal for a visit if you want sunny and pleasant weather.
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Climate Table of Guernsey
The climate table of Guernsey shows the average temperatures, rainfall, and UV index per month. The table provides an overview of the average day and night temperatures in degrees Celsius, the total amount of rainfall in millimeters, the total snowfall in centimeters, and the UV index for each month. Rainfall is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 10 | 10 | 11 | 13 | 16 | 19 | 21 | 20 | 19 | 16 | 13 | 11 |
| Temp. min (°C) | 6 | 6 | 7 | 8 | 10 | 13 | 15 | 15 | 14 | 12 | 10 | 8 |
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| Precipitation (mm) | 104 | 90 | 64 | 34 | 68 | 39 | 27 | 53 | 46 | 122 | 100 | 112 |
| UV Index | 2 | 3 | 5 | 6 | 6 | 8 | 8 | 6 | 4 | 3 | 2 | 1 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
Temperature charts
These charts display the average temperatures in Guernsey. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Average Temperature per Month in Guernsey
Yearly Temperature in Guernsey
Precipitation charts
These charts show the average amount of precipitation in Guernsey. Precipitation is always measured as water, even when it falls as snow or hail. The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Average Precipitation per Month in Guernsey
Total Yearly Precipitation in Guernsey
UV index chart
This chart shows the average UV index per month in Guernsey. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Average UV Index per Month in Guernsey
Weather experiences in Guernsey
The weather in Guernsey is rated an average of 3,7 out of 5 stars by 3 visitors. Have you been to Guernsey? Share your weather experience to help other visitors.
Freek
There was frequent rain with occasional sunny breaks. The weather is changeable, but it gives the island its charm.
TamarAugust on Guernsey brought mixed emotions. Although the island was bathed in sunshine and warm temperatures, there were also unexpected showers and cool evenings. Compliment the beauty of nature despite the changeable weather.
PatriciaBlessed climate, average 23 degrees, sunshine every day , small breeze. They are blissful islands to relax and enjoy nature
Have you been to Guernsey?
Share your weather experiences in Guernsey.
Average weather in Guernsey by month
Click on a month below to see detailed weather info for Guernsey. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.