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Monthly climate in St Anne, Guernsey

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification St Anne features a oceanic climate (Cfb). Temperatures typically range between 9 °C (48 °F) and 17 °C (63 °F) through the year, but rarely can drop to 0 °C (32 °F) or can rise to as high as 22 °C (71 °F). The average annual precipitation amounts to about 1004 mm (39.5 inches) and receives 151 rainy days on the 1 mm (0.04 inches) threshold annually. St Anne enjoys an average of 3448 hours of sunshine throughout the year, and daylight varies from 8 hours 10 minutes to 16 hours 13 minutes per day.

Monthly average temperatures in St Anne, Guernsey

The warmest months in St Anne are July, August and September, with daily mean temperatures ranging from 16 to 17 °C (61 - 63 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 9 to 9 °C (48 - 49 °F) throughout the day. On average each year, St Anne experiences 0 days above 25 °C (77.0 °F) and 0 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in St Anne. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum14°C
(57°F)		13°C
(55°F)		13°C
(56°F)		15°C
(59°F)		18°C
(65°F)		18°C
(65°F)		21°C
(69°F)		22°C
(71°F)		21°C
(70°F)		20°C
(68°F)		17°C
(62°F)		14°C
(58°F)
Mean maximum13°C
(55°F)		12°C
(54°F)		12°C
(54°F)		14°C
(57°F)		15°C
(60°F)		17°C
(62°F)		20°C
(68°F)		20°C
(68°F)		20°C
(69°F)		18°C
(65°F)		16°C
(61°F)		14°C
(57°F)
Average high10°C
(50°F)		10°C
(50°F)		10°C
(50°F)		11°C
(52°F)		13°C
(55°F)		15°C
(59°F)		17°C
(62°F)		17°C
(64°F)		17°C
(63°F)		16°C
(60°F)		13°C
(56°F)		11°C
(53°F)
Daily mean9°C
(48°F)		9°C
(48°F)		9°C
(49°F)		10°C
(50°F)		12°C
(53°F)		14°C
(58°F)		16°C
(61°F)		17°C
(63°F)		16°C
(62°F)		15°C
(59°F)		12°C
(54°F)		10°C
(51°F)
Average low8°C
(47°F)		8°C
(46°F)		8°C
(47°F)		9°C
(49°F)		11°C
(52°F)		14°C
(57°F)		16°C
(60°F)		16°C
(62°F)		16°C
(61°F)		14°C
(57°F)		11°C
(52°F)		9°C
(49°F)
Mean minimum5°C
(41°F)		4°C
(39°F)		5°C
(41°F)		6°C
(43°F)		8°C
(47°F)		12°C
(53°F)		14°C
(57°F)		14°C
(58°F)		13°C
(56°F)		11°C
(52°F)		7°C
(46°F)		6°C
(43°F)
Minimum3°C
(37°F)		1°C
(33°F)		-0°C
(32°F)		5°C
(41°F)		7°C
(45°F)		11°C
(52°F)		13°C
(56°F)		14°C
(57°F)		12°C
(54°F)		8°C
(47°F)		6°C
(43°F)		5°C
(41°F)

Compare climate in St Anne with other places

Compare temperature, precipitation, sunshine, UV index in St Anne, Guernsey with other places around the world.

Monthly average precipitation in St Anne, Guernsey

St Anne usually has the most precipitation in October, November and December, with an average of 19 rainy days and 149 mm (5.8 inches) of precipitation per month. The driest months in St Anne are April, July and August. On average, 42 mm (1.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in St Anne. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)99 (3.9)86 (3.4)78 (3.1)33 (1.3)54 (2.1)58 (2.3)38 (1.5)54 (2.1)59 (2.3)144 (5.7)131 (5.2)170 (6.7)
Average precipitation days (≥ 1 mm)151615788799171921

Monthly sunshine hours in St Anne, Guernsey

The sunniest months in St Anne are May, June and July, when the sun shines an average of 13 hours 46 minutes a day. Least sunny months in St Anne: January, February and December receive an average of 4 hours 23 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in St Anne. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours106163238359414415436396338269180130
Mean daily daylight hours8h 38m10h 6m11h 55m13h 47m15h 23m16h 13m15h 47m14h 20m12h 33m10h 42m9h 3m8h 10m

Solar UV radiation in St Anne, Guernsey

St Anne experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 7 - 9, which corresponds to the High / Very High category of sun exposure. January, November and December are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 2. For more detailed information, check out our hourly St Anne UV Index data.

Average daily maximum UV levels by month for St Anne. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)234679876421