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Monthly climate in Grandvilliers, France

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Grandvilliers features a oceanic climate (Cfb). Temperatures typically range between 4 °C (40 °F) and 19 °C (66 °F) through the year, but rarely can drop to -9 °C (17 °F) or can rise to as high as 39 °C (102 °F). The average annual precipitation amounts to about 791 mm (31.2 inches) and receives 141 rainy days on the 1 mm (0.04 inches) threshold annually. Grandvilliers enjoys an average of 3475 hours of sunshine throughout the year, and daylight varies from 8 hours 10 minutes to 16 hours 14 minutes per day.

Monthly average temperatures in Grandvilliers, France

The warmest months in Grandvilliers are June, July and August, with daily mean temperatures ranging from 17 to 19 °C (63 - 66 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 4 to 6 °C (40 - 43 °F) throughout the day. On average each year, Grandvilliers experiences 22 days above 25 °C (77.0 °F) and 25 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Grandvilliers. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum14°C
(57°F)		18°C
(65°F)		22°C
(72°F)		25°C
(78°F)		26°C
(80°F)		33°C
(92°F)		39°C
(102°F)		36°C
(98°F)		30°C
(86°F)		24°C
(76°F)		18°C
(66°F)		15°C
(58°F)
Mean maximum12°C
(54°F)		15°C
(59°F)		19°C
(66°F)		23°C
(73°F)		25°C
(77°F)		28°C
(83°F)		32°C
(90°F)		31°C
(89°F)		27°C
(80°F)		22°C
(72°F)		16°C
(62°F)		14°C
(57°F)
Average high7°C
(44°F)		9°C
(48°F)		11°C
(52°F)		15°C
(59°F)		17°C
(64°F)		22°C
(71°F)		23°C
(74°F)		23°C
(74°F)		20°C
(68°F)		16°C
(61°F)		10°C
(51°F)		8°C
(47°F)
Daily mean4°C
(40°F)		6°C
(42°F)		7°C
(46°F)		10°C
(50°F)		13°C
(56°F)		17°C
(63°F)		19°C
(66°F)		18°C
(65°F)		16°C
(60°F)		12°C
(54°F)		7°C
(46°F)		6°C
(43°F)
Average low2°C
(36°F)		3°C
(37°F)		4°C
(39°F)		5°C
(42°F)		8°C
(47°F)		12°C
(55°F)		14°C
(57°F)		14°C
(58°F)		11°C
(53°F)		9°C
(48°F)		5°C
(41°F)		4°C
(39°F)
Mean minimum-3°C
(26°F)		-4°C
(26°F)		-2°C
(29°F)		-1°C
(31°F)		2°C
(36°F)		7°C
(45°F)		10°C
(50°F)		9°C
(48°F)		6°C
(43°F)		3°C
(38°F)		-1°C
(31°F)		-3°C
(27°F)
Minimum-6°C
(21°F)		-7°C
(19°F)		-9°C
(17°F)		-2°C
(29°F)		0°C
(33°F)		6°C
(43°F)		8°C
(46°F)		7°C
(45°F)		4°C
(39°F)		1°C
(34°F)		-2°C
(28°F)		-4°C
(26°F)

Compare climate in Grandvilliers with other places

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

Monthly average precipitation in Grandvilliers, France

Grandvilliers usually has the most precipitation in May, October and December, with an average of 14 rainy days and 87 mm (3.4 inches) of precipitation per month. The driest months in Grandvilliers are April, July and September. On average, 42 mm (1.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Grandvilliers. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)61 (2.4)65 (2.6)70 (2.8)37 (1.4)77 (3.0)66 (2.6)46 (1.8)71 (2.8)44 (1.7)80 (3.1)70 (2.7)105 (4.1)
Average precipitation days (≥ 1 mm)1012157131010129131317

Monthly sunshine hours in Grandvilliers, France

The sunniest months in Grandvilliers are May, June and July, when the sun shines an average of 13 hours 10 minutes a day. Least sunny months in Grandvilliers: January, February and December receive an average of 5 hours 16 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Grandvilliers. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours121197267350389410412381320265198160
Mean daily daylight hours8h 38m10h 6m11h 55m13h 47m15h 24m16h 14m15h 47m14h 20m12h 33m10h 42m9h 2m8h 10m

Solar UV radiation in Grandvilliers, France

Grandvilliers experiences the highest level of ultraviolet (UV) radiation in May, June 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 Grandvilliers UV Index data.

Average daily maximum UV levels by month for Grandvilliers. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)234689886421