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Monthly climate in Gelannes, France

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Gelannes features a oceanic climate (Cfb). Temperatures typically range between 4 °C (39 °F) and 21 °C (70 °F) through the year, but rarely can drop to -10 °C (14 °F) or can rise to as high as 41 °C (107 °F). The average annual precipitation amounts to about 786 mm (30.9 inches) and receives 131 rainy days on the 1 mm (0.04 inches) threshold annually. Gelannes enjoys an average of 3471 hours of sunshine throughout the year, and daylight varies from 8 hours 21 minutes to 16 hours 2 minutes per day.

Monthly average temperatures in Gelannes, France

The warmest months in Gelannes are June, July and August, with daily mean temperatures ranging from 19 to 21 °C (67 - 70 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 4 to 6 °C (39 - 43 °F) throughout the day. On average each year, Gelannes experiences 53 days above 25 °C (77.0 °F) and 34 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Gelannes. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum15°C
(59°F)		21°C
(69°F)		24°C
(76°F)		28°C
(82°F)		32°C
(90°F)		36°C
(97°F)		41°C
(107°F)		38°C
(100°F)		34°C
(94°F)		27°C
(80°F)		21°C
(70°F)		17°C
(62°F)
Mean maximum13°C
(55°F)		17°C
(62°F)		21°C
(70°F)		25°C
(77°F)		28°C
(82°F)		31°C
(89°F)		35°C
(94°F)		35°C
(95°F)		31°C
(88°F)		24°C
(76°F)		18°C
(65°F)		15°C
(59°F)
Average high7°C
(44°F)		10°C
(50°F)		13°C
(55°F)		16°C
(62°F)		20°C
(68°F)		24°C
(76°F)		26°C
(80°F)		26°C
(79°F)		23°C
(73°F)		17°C
(62°F)		11°C
(51°F)		8°C
(47°F)
Daily mean4°C
(39°F)		6°C
(43°F)		8°C
(47°F)		11°C
(52°F)		15°C
(58°F)		19°C
(67°F)		21°C
(70°F)		21°C
(69°F)		17°C
(63°F)		13°C
(55°F)		7°C
(45°F)		6°C
(43°F)
Average low1°C
(35°F)		3°C
(37°F)		4°C
(39°F)		5°C
(42°F)		9°C
(49°F)		14°C
(57°F)		15°C
(60°F)		15°C
(59°F)		12°C
(53°F)		9°C
(48°F)		4°C
(40°F)		3°C
(38°F)
Mean minimum-4°C
(25°F)		-4°C
(25°F)		-3°C
(27°F)		-1°C
(30°F)		3°C
(37°F)		8°C
(47°F)		11°C
(52°F)		10°C
(49°F)		6°C
(43°F)		2°C
(36°F)		-2°C
(29°F)		-4°C
(26°F)
Minimum-8°C
(18°F)		-8°C
(19°F)		-10°C
(14°F)		-4°C
(26°F)		1°C
(34°F)		7°C
(45°F)		8°C
(47°F)		7°C
(44°F)		4°C
(40°F)		1°C
(34°F)		-4°C
(25°F)		-4°C
(24°F)

Compare climate in Gelannes with other places

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

Monthly average precipitation in Gelannes, France

Gelannes usually has the most precipitation in January, October and December, with an average of 13 rainy days and 87 mm (3.4 inches) of precipitation per month. The driest months in Gelannes are April, August and September. On average, 43 mm (1.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Gelannes. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)73 (2.9)66 (2.6)70 (2.8)32 (1.2)70 (2.7)67 (2.6)54 (2.1)48 (1.9)50 (2.0)78 (3.1)68 (2.7)109 (4.3)
Average precipitation days (≥ 1 mm)12121371211887121217

Monthly sunshine hours in Gelannes, France

The sunniest months in Gelannes are May, June and July, when the sun shines an average of 13 hours 6 minutes a day. Least sunny months in Gelannes: January, November and December receive an average of 5 hours 7 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Gelannes. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours118201263352390406409388326262201151
Mean daily daylight hours8h 47m10h 11m11h 55m13h 42m15h 14m16h 2m15h 37m14h 14m12h 31m10h 45m9h 11m8h 21m

Solar UV radiation in Gelannes, France

Gelannes 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 Gelannes UV Index data.

Average daily maximum UV levels by month for Gelannes. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)235689986421