Where to Go for Great Weather
When to go · Climate guide

Guernseywhen to go

Guernsey's national averages run from 10 °C in February to 18 °C in August, with rainfall between 35 mm in July and 142 mm in November and 2.1–8.6 hours of sun a day. Against the default preferences (under 2.7 mm of rain a day, at least 6 hours of sun), the strongest months are March, April and May. Its 1 regions span 14–14 °C in annual mean temperature, so the national figure hides a good deal.

Region
Europe
Area
48 km²
Climate at a glance · 10-year ERA5

A decade of weather, in one page

Temperature°C
Temperature · 12-month climatologyGuernsey. Average daytime high by month in °C. Lowest in February (9.9), highest in August (17.9). Monthly means: 10.0, 9.9, 10.1, 11.0, 12.9, 15.2, 17.1, 17.9, 17.6, 15.9, 13.2, 11.5.
— daytime high— overnight low▬ typical range
View data table
MonthAverage daytime high (°C)Average overnight low (°C)Typical lowTypical high
January10.08.04.712.9
February9.98.14.312.1
March10.18.45.612.0
April11.09.46.913.2
May12.911.69.415.1
June15.214.012.317.7
July17.115.914.319.3
August17.916.715.220.0
September17.616.113.720.1
October15.914.211.918.2
November13.211.37.716.2
December11.59.66.013.9
Rainfallmm
Rainfall · 12-month climatologyGuernsey. Rainfall by month in mm. Lowest in July (36), highest in November (142). Monthly means: 124, 81, 74, 43, 43, 53, 36, 47, 78, 126, 142, 140.
View data table
MonthRainfall (mm)
January124
February81
March74
April43
May43
June53
July36
August47
September78
October126
November142
December140
Sunshinehr / day
Sunshine · 12-month climatologyGuernsey. Sunshine hours by month in hr / day. Lowest in December (2.1), highest in July (8.6). Monthly means: 2.4, 3.9, 5.4, 8.0, 8.6, 8.5, 8.6, 7.6, 6.2, 4.5, 3.1, 2.1.
View data table
MonthSunshine hours (hr / day)
January2.4
February3.9
March5.4
April8.0
May8.6
June8.5
July8.6
August7.6
September6.2
October4.5
November3.1
December2.1
Windkm/h
Wind · 12-month climatologyGuernsey. Average wind speed by month in km/h. Lowest in July (21.3), highest in December (34.3). Monthly means: 32.4, 33.3, 30.2, 24.7, 22.5, 21.4, 21.3, 22.7, 25.7, 29.3, 33.2, 34.3.
— average▬ typical range
View data table
MonthAverage wind speed (km/h)Typical lowTypical high
January32.413.754.8
February33.314.553.4
March30.212.749.9
April24.79.442.4
May22.59.738.0
June21.49.936.9
July21.39.436.1
August22.79.138.3
September25.711.844.3
October29.310.948.2
November33.213.951.3
December34.313.153.6
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Snow depth

Snow depth for Guernsey is part of the Premium map and its district-level detail. See what Premium includes.

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Sea surface temperature

Sea surface temperature for Guernsey is part of the Premium map and its district-level detail. See what Premium includes.

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Heat index

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Humidity

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Safety

No advisory on file for Guernsey

None of the six governments we track publishes a country-wide advisory for Guernsey. That is not the same as a clean bill of health — check your own government’s guidance before you travel.

Month by month

A year in Guernsey, in order

  1. Jan
    January10.0°C · 124 mm · 2.4 hr/day

    Around 10 °C with 124 mm of rain and 2.4 hours of sun a day.

    Around 10 °C with 124 mm of rain and 2.4 hours of sun a day.

  2. Feb
    February9.9°C · 81 mm · 3.9 hr/day

    Around 10 °C with 81 mm of rain and 3.9 hours of sun a day.

    Around 10 °C with 81 mm of rain and 3.9 hours of sun a day.

  3. Mar
    March10.1°C · 74 mm · 5.4 hr/day

    Around 10 °C with 74 mm of rain and 5.4 hours of sun a day.

    Around 10 °C with 74 mm of rain and 5.4 hours of sun a day.

  4. Apr
    April11.0°C · 43 mm · 8.0 hr/day

    Around 11 °C with 43 mm of rain and 8.0 hours of sun a day.

    Around 11 °C with 43 mm of rain and 8.0 hours of sun a day.

  5. May
    May12.9°C · 43 mm · 8.6 hr/day

    Around 13 °C with 43 mm of rain and 8.6 hours of sun a day.

    Around 13 °C with 43 mm of rain and 8.6 hours of sun a day.

  6. Jun
    June15.2°C · 53 mm · 8.5 hr/day

    Around 15 °C with 53 mm of rain and 8.5 hours of sun a day.

    Around 15 °C with 53 mm of rain and 8.5 hours of sun a day.

  7. Jul
    July17.1°C · 36 mm · 8.6 hr/day

    Around 17 °C with 35 mm of rain and 8.6 hours of sun a day.

    Around 17 °C with 35 mm of rain and 8.6 hours of sun a day.

  8. Aug
    August17.9°C · 47 mm · 7.6 hr/day

    Around 18 °C with 47 mm of rain and 7.6 hours of sun a day.

    Around 18 °C with 47 mm of rain and 7.6 hours of sun a day.

  9. Sep
    September17.6°C · 78 mm · 6.2 hr/day

    Around 18 °C with 78 mm of rain and 6.2 hours of sun a day.

    Around 18 °C with 78 mm of rain and 6.2 hours of sun a day.

  10. Oct
    October15.9°C · 126 mm · 4.5 hr/day

    Around 16 °C with 126 mm of rain and 4.5 hours of sun a day.

    Around 16 °C with 126 mm of rain and 4.5 hours of sun a day.

  11. Nov
    November13.2°C · 142 mm · 3.1 hr/day

    Around 13 °C with 142 mm of rain and 3.1 hours of sun a day.

    Around 13 °C with 142 mm of rain and 3.1 hours of sun a day.

  12. Dec
    December11.5°C · 140 mm · 2.1 hr/day

    Around 11 °C with 140 mm of rain and 2.1 hours of sun a day.

    Around 11 °C with 140 mm of rain and 2.1 hours of sun a day.

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