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Monthly climate in Brielles, France

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Brielles features a oceanic climate (Cfb). Temperatures typically range between 5 °C (42 °F) and 20 °C (68 °F) through the year, but rarely can drop to -7 °C (19 °F) or can rise to as high as 38 °C (101 °F). The average annual precipitation amounts to about 818 mm (32.2 inches) and receives 131 rainy days on the 1 mm (0.04 inches) threshold annually. Brielles enjoys an average of 3519 hours of sunshine throughout the year, and daylight varies from 8 hours 24 minutes to 15 hours 58 minutes per day.

Monthly average temperatures in Brielles, France

The warmest months in Brielles are June, July and August, with daily mean temperatures ranging from 18 to 20 °C (64 - 68 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 5 to 7 °C (42 - 45 °F) throughout the day. On average each year, Brielles experiences 34 days above 25 °C (77.0 °F) and 22 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Brielles. 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
(75°F)		27°C
(80°F)		29°C
(85°F)		34°C
(94°F)		38°C
(101°F)		36°C
(96°F)		33°C
(92°F)		25°C
(78°F)		17°C
(63°F)		15°C
(60°F)
Mean maximum13°C
(56°F)		16°C
(60°F)		20°C
(68°F)		24°C
(76°F)		26°C
(79°F)		29°C
(85°F)		33°C
(92°F)		32°C
(90°F)		29°C
(84°F)		22°C
(72°F)		16°C
(62°F)		14°C
(58°F)
Average high8°C
(47°F)		10°C
(51°F)		13°C
(55°F)		16°C
(61°F)		19°C
(67°F)		23°C
(73°F)		25°C
(77°F)		24°C
(75°F)		21°C
(71°F)		17°C
(63°F)		12°C
(53°F)		9°C
(49°F)
Daily mean5°C
(42°F)		7°C
(44°F)		9°C
(48°F)		11°C
(52°F)		14°C
(58°F)		18°C
(64°F)		20°C
(68°F)		19°C
(66°F)		16°C
(62°F)		13°C
(55°F)		8°C
(47°F)		7°C
(45°F)
Average low3°C
(37°F)		4°C
(39°F)		5°C
(41°F)		6°C
(43°F)		9°C
(49°F)		13°C
(56°F)		15°C
(58°F)		14°C
(58°F)		12°C
(53°F)		9°C
(49°F)		5°C
(42°F)		4°C
(40°F)
Mean minimum-3°C
(27°F)		-3°C
(28°F)		-2°C
(29°F)		-1°C
(31°F)		3°C
(38°F)		8°C
(46°F)		10°C
(51°F)		9°C
(48°F)		6°C
(44°F)		3°C
(38°F)		-1°C
(30°F)		-2°C
(28°F)
Minimum-7°C
(19°F)		-6°C
(22°F)		-7°C
(19°F)		-3°C
(27°F)		-0°C
(32°F)		6°C
(43°F)		7°C
(45°F)		7°C
(45°F)		4°C
(40°F)		2°C
(35°F)		-2°C
(28°F)		-3°C
(26°F)

Compare climate in Brielles with other places

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

Monthly average precipitation in Brielles, France

Brielles usually has the most precipitation in June, October and December, with an average of 12 rainy days and 98 mm (3.9 inches) of precipitation per month. The driest months in Brielles are January, April and July. On average, 48 mm (1.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Brielles. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)51 (2.0)65 (2.6)65 (2.5)46 (1.8)69 (2.7)104 (4.1)47 (1.8)53 (2.1)52 (2.1)85 (3.4)76 (3.0)105 (4.1)
Average precipitation days (≥ 1 mm)10121381211899121215

Monthly sunshine hours in Brielles, France

The sunniest months in Brielles are May, June and July, when the sun shines an average of 12 hours 59 minutes a day. Least sunny months in Brielles: January, February and December receive an average of 5 hours 41 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Brielles. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours135198278345396386410381322260217184
Mean daily daylight hours8h 50m10h 13m11h 55m13h 41m15h 12m15h 58m15h 33m14h 12m12h 31m10h 46m9h 13m8h 24m

Solar UV radiation in Brielles, France

Brielles 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 Brielles UV Index data.

Average daily maximum UV levels by month for Brielles. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)235689986422