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Monthly climate in Bollwiller, France

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Bollwiller features a oceanic climate (Cfb). Temperatures typically range between 2 °C (36 °F) and 21 °C (69 °F) through the year, but rarely can drop to -13 °C (9 °F) or can rise to as high as 37 °C (99 °F). The average annual precipitation amounts to about 961 mm (37.8 inches) and receives 146 rainy days on the 1 mm (0.04 inches) threshold annually. Bollwiller enjoys an average of 3483 hours of sunshine throughout the year, and daylight varies from 8 hours 28 minutes to 15 hours 54 minutes per day.

Monthly average temperatures in Bollwiller, France

The warmest months in Bollwiller are June, July and August, with daily mean temperatures ranging from 19 to 21 °C (67 - 69 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 2 to 4 °C (36 - 40 °F) throughout the day. On average each year, Bollwiller experiences 53 days above 25 °C (77.0 °F) and 62 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Bollwiller. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum15°C
(59°F)		19°C
(66°F)		22°C
(71°F)		27°C
(81°F)		31°C
(87°F)		34°C
(94°F)		37°C
(99°F)		36°C
(97°F)		31°C
(89°F)		25°C
(77°F)		21°C
(70°F)		14°C
(58°F)
Mean maximum12°C
(54°F)		15°C
(60°F)		19°C
(67°F)		24°C
(76°F)		27°C
(82°F)		30°C
(86°F)		33°C
(92°F)		33°C
(92°F)		29°C
(85°F)		23°C
(73°F)		17°C
(63°F)		13°C
(56°F)
Average high5°C
(41°F)		8°C
(47°F)		11°C
(53°F)		16°C
(61°F)		19°C
(66°F)		24°C
(76°F)		26°C
(79°F)		26°C
(79°F)		22°C
(72°F)		16°C
(61°F)		9°C
(48°F)		6°C
(43°F)
Daily mean2°C
(36°F)		4°C
(40°F)		6°C
(44°F)		10°C
(51°F)		14°C
(57°F)		19°C
(67°F)		21°C
(69°F)		20°C
(69°F)		16°C
(61°F)		11°C
(52°F)		6°C
(42°F)		4°C
(39°F)
Average low-1°C
(31°F)		1°C
(34°F)		2°C
(36°F)		5°C
(40°F)		9°C
(48°F)		14°C
(57°F)		15°C
(59°F)		15°C
(59°F)		11°C
(52°F)		7°C
(45°F)		3°C
(38°F)		1°C
(35°F)
Mean minimum-7°C
(20°F)		-6°C
(22°F)		-5°C
(24°F)		-2°C
(28°F)		3°C
(38°F)		7°C
(45°F)		10°C
(50°F)		8°C
(47°F)		5°C
(41°F)		2°C
(35°F)		-2°C
(29°F)		-4°C
(24°F)
Minimum-13°C
(9°F)		-11°C
(12°F)		-13°C
(10°F)		-3°C
(26°F)		1°C
(34°F)		6°C
(42°F)		8°C
(48°F)		6°C
(44°F)		3°C
(38°F)		1°C
(33°F)		-3°C
(27°F)		-5°C
(23°F)

Compare climate in Bollwiller with other places

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

Monthly average precipitation in Bollwiller, France

Bollwiller usually has the most precipitation in January, May and December, with an average of 14 rainy days and 106 mm (4.2 inches) of precipitation per month. The driest months in Bollwiller are April, September and November. On average, 57 mm (2.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Bollwiller. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)88 (3.5)75 (2.9)82 (3.2)48 (1.9)109 (4.3)87 (3.4)77 (3.0)72 (2.9)52 (2.0)80 (3.2)70 (2.8)120 (4.7)
Average precipitation days (≥ 1 mm)1111139141313119131217

Monthly sunshine hours in Bollwiller, France

The sunniest months in Bollwiller are June, July and August, when the sun shines an average of 13 hours 0 minutes a day. Least sunny months in Bollwiller: January, November and December receive an average of 5 hours 15 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Bollwiller. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours134210283352364395414386326264193156
Mean daily daylight hours8h 53m10h 14m11h 56m13h 39m15h 9m15h 54m15h 30m14h 11m12h 31m10h 47m9h 16m8h 28m

Solar UV radiation in Bollwiller, France

Bollwiller 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 Bollwiller UV Index data.

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