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Monthly climate in Boussu, Belgium

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Boussu features a oceanic climate (Cfb). Temperatures typically range between 4 °C (39 °F) and 19 °C (66 °F) through the year, but rarely can drop to -8 °C (17 °F) or can rise to as high as 40 °C (104 °F). The average annual precipitation amounts to about 790 mm (31.1 inches) and receives 141 rainy days on the 1 mm (0.04 inches) threshold annually. Boussu enjoys an average of 3448 hours of sunshine throughout the year, and daylight varies from 8 hours 4 minutes to 16 hours 20 minutes per day.

Monthly average temperatures in Boussu, Belgium

The warmest months in Boussu are June, July and August, with daily mean temperatures ranging from 18 to 19 °C (65 - 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 (39 - 42 °F) throughout the day. On average each year, Boussu experiences 27 days above 25 °C (77.0 °F) and 28 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Boussu. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum14°C
(57°F)		19°C
(66°F)		23°C
(73°F)		26°C
(79°F)		30°C
(86°F)		33°C
(91°F)		40°C
(104°F)		37°C
(99°F)		33°C
(91°F)		25°C
(77°F)		18°C
(65°F)		15°C
(59°F)
Mean maximum12°C
(54°F)		15°C
(59°F)		19°C
(66°F)		23°C
(74°F)		26°C
(80°F)		28°C
(83°F)		32°C
(89°F)		32°C
(90°F)		28°C
(82°F)		22°C
(72°F)		16°C
(62°F)		14°C
(57°F)
Average high6°C
(44°F)		8°C
(48°F)		11°C
(53°F)		15°C
(59°F)		18°C
(65°F)		22°C
(73°F)		24°C
(75°F)		23°C
(74°F)		20°C
(69°F)		16°C
(60°F)		10°C
(51°F)		8°C
(46°F)
Daily mean4°C
(39°F)		5°C
(42°F)		7°C
(46°F)		10°C
(50°F)		14°C
(57°F)		18°C
(65°F)		19°C
(66°F)		19°C
(66°F)		16°C
(60°F)		12°C
(54°F)		7°C
(46°F)		6°C
(42°F)
Average low2°C
(35°F)		3°C
(37°F)		4°C
(39°F)		5°C
(42°F)		9°C
(48°F)		13°C
(56°F)		14°C
(58°F)		14°C
(58°F)		11°C
(53°F)		9°C
(49°F)		5°C
(41°F)		3°C
(38°F)
Mean minimum-3°C
(27°F)		-4°C
(26°F)		-2°C
(28°F)		-1°C
(30°F)		2°C
(36°F)		8°C
(47°F)		10°C
(50°F)		9°C
(49°F)		6°C
(43°F)		3°C
(38°F)		-2°C
(30°F)		-3°C
(27°F)
Minimum-7°C
(21°F)		-8°C
(18°F)		-8°C
(17°F)		-3°C
(27°F)		1°C
(34°F)		6°C
(43°F)		8°C
(47°F)		7°C
(45°F)		3°C
(38°F)		1°C
(34°F)		-2°C
(29°F)		-4°C
(25°F)

Compare climate in Boussu with other places

Compare temperature, precipitation, sunshine, UV index in Boussu, Belgium with other places around the world.

Monthly average precipitation in Boussu, Belgium

Boussu usually has the most precipitation in August, October and December, with an average of 14 rainy days and 86 mm (3.4 inches) of precipitation per month. The driest months in Boussu are April, June and September. On average, 48 mm (1.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Boussu. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)65 (2.6)72 (2.8)73 (2.9)38 (1.5)59 (2.3)57 (2.2)60 (2.4)79 (3.1)49 (1.9)78 (3.1)60 (2.4)100 (3.9)
Average precipitation days (≥ 1 mm)121214813910139131117

Monthly sunshine hours in Boussu, Belgium

The sunniest months in Boussu are May, June and July, when the sun shines an average of 13 hours 12 minutes a day. Least sunny months in Boussu: January, November and December receive an average of 5 hours 2 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Boussu. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours120197264348396403415383321253196147
Mean daily daylight hours8h 33m10h 3m11h 55m13h 49m15h 28m16h 20m15h 53m14h 24m12h 33m10h 40m8h 58m8h 4m

Solar UV radiation in Boussu, Belgium

Boussu experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 7 - 8, which corresponds to the High / Very High category of sun exposure. January, February 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 Boussu UV Index data.

Average daily maximum UV levels by month for Boussu. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)224578875421