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Monthly climate in Guern, Brittany, France

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Guern features a oceanic climate (Cfb).Temperatures typically range between 6 °C (43 °F) and 18 °C (66 °F) through the year, but rarely can drop to -7 °C (19 °F) or can rise to as high as 34 °C (93 °F).The average annual precipitation amounts to about 787 mm (31.0 inches) and receives 129 rainy days on the 1 mm (0.04 inches) threshold annually.Guern enjoys an average of 3690 hours of sunshine throughout the year, and daylight varies from 8 hours 25 minutes to 15 hours 58 minutes per day.

Monthly average temperatures in Guern, Brittany, France §

The warmest months in Guern are June, July and August, with daily mean temperatures ranging from 17 to 18 °C (62 - 66 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 6 to 8 °C (43 - 46 °F) throughout the day. On average each year, Guern experiences 20 days above 25 °C (77.0 °F) and 18 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Guern, Brittany, France.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 15°C
(59°F)		 19°C
(67°F)		 21°C
(70°F)		 25°C
(77°F)		 28°C
(82°F)		 33°C
(92°F)		 34°C
(93°F)		 34°C
(93°F)		 31°C
(88°F)		 23°C
(74°F)		 18°C
(64°F)		 14°C
(58°F)
Mean maximum 13°C
(56°F)		 15°C
(59°F)		 18°C
(65°F)		 23°C
(74°F)		 24°C
(76°F)		 28°C
(83°F)		 31°C
(88°F)		 30°C
(87°F)		 26°C
(80°F)		 20°C
(69°F)		 16°C
(61°F)		 14°C
(57°F)
Average high 9°C
(48°F)		 10°C
(51°F)		 12°C
(54°F)		 15°C
(60°F)		 18°C
(65°F)		 21°C
(70°F)		 23°C
(74°F)		 22°C
(72°F)		 20°C
(69°F)		 16°C
(62°F)		 12°C
(54°F)		 10°C
(50°F)
Daily mean 6°C
(43°F)		 7°C
(45°F)		 8°C
(47°F)		 11°C
(51°F)		 13°C
(56°F)		 17°C
(62°F)		 18°C
(66°F)		 18°C
(64°F)		 16°C
(61°F)		 13°C
(55°F)		 9°C
(48°F)		 8°C
(46°F)
Average low 3°C
(38°F)		 4°C
(39°F)		 5°C
(41°F)		 6°C
(43°F)		 9°C
(48°F)		 12°C
(54°F)		 14°C
(57°F)		 13°C
(56°F)		 12°C
(53°F)		 9°C
(49°F)		 6°C
(43°F)		 5°C
(41°F)
Mean minimum -3°C
(28°F)		 -3°C
(28°F)		 -1°C
(30°F)		 -0°C
(32°F)		 3°C
(37°F)		 7°C
(45°F)		 10°C
(50°F)		 8°C
(47°F)		 6°C
(43°F)		 4°C
(39°F)		 0°C
(33°F)		 -2°C
(29°F)
Minimum -7°C
(20°F)		 -6°C
(21°F)		 -7°C
(19°F)		 -3°C
(27°F)		 -2°C
(30°F)		 6°C
(43°F)		 8°C
(46°F)		 7°C
(46°F)		 4°C
(39°F)		 -0°C
(32°F)		 -1°C
(31°F)		 -2°C
(28°F)

Compare climate in Guern with other places

Compare temperature, precipitation, sunshine, UV index in Guern, Brittany, France with other places around the world.

Monthly average precipitation in Guern, Brittany, France §

Guern usually has the most precipitation in June, October and December, with an average of 12 rainy days and 95 mm (3.7 inches) of precipitation per month.The driest months in Guern are April, July and September. On average, 44 mm (1.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Guern, Brittany, France.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 48 (1.9) 71 (2.8) 62 (2.5) 44 (1.7) 68 (2.7) 89 (3.5) 45 (1.8) 48 (1.9) 41 (1.6) 93 (3.7) 76 (3.0) 101 (4.0)
Average precipitation days (≥ 1 mm) 8 12 13 8 12 11 9 9 8 13 12 14

Monthly sunshine hours in Guern, Brittany, France §

The sunniest months in Guern are May, June and July, when the sun shines an average of 13 hours 38 minutes a day.Least sunny months in Guern: January, February and December receive an average of 5 hours 53 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Guern, Brittany, France.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 143 206 298 357 413 410 431 399 337 278 229 186
Mean daily daylight hours 8h 51m 10h 13m 11h 56m 13h 41m 15h 11m 15h 58m 15h 33m 14h 12m 12h 31m 10h 46m 9h 14m 8h 25m

Solar UV radiation in Guern, Brittany, France §

Guern experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 8 - 9, which corresponds to the 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 Guern UV Index data.

Average daily maximum UV levels by month for Guern, Brittany, France.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 2 3 5 6 8 9 9 8 6 5 2 2