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Monthly climate in Dortmund, Germany

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Dortmund features a oceanic climate (Cfb). Temperatures typically range between 3 °C (38 °F) and 19 °C (66 °F) through the year, but rarely can drop to -16 °C (3 °F) or can rise to as high as 38 °C (100 °F). The average annual precipitation amounts to about 933 mm (36.7 inches) and receives 161 rainy days on the 1 mm (0.04 inches) threshold annually. Dortmund enjoys an average of 3280 hours of sunshine throughout the year, and daylight varies from 7 hours 53 minutes to 16 hours 33 minutes per day.

Monthly average temperatures in Dortmund, Germany

The warmest months in Dortmund are June, July and August, with daily mean temperatures ranging from 18 to 19 °C (66 - 66 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 3 to 5 °C (38 - 40 °F) throughout the day. On average each year, Dortmund experiences 30 days above 25 °C (77.0 °F) and 37 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Dortmund. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum14°C
(57°F)		20°C
(67°F)		22°C
(72°F)		28°C
(82°F)		33°C
(91°F)		35°C
(95°F)		38°C
(100°F)		36°C
(97°F)		31°C
(88°F)		26°C
(80°F)		19°C
(67°F)		15°C
(59°F)
Mean maximum12°C
(53°F)		15°C
(60°F)		19°C
(66°F)		24°C
(76°F)		27°C
(82°F)		29°C
(85°F)		31°C
(88°F)		31°C
(88°F)		29°C
(84°F)		22°C
(72°F)		16°C
(62°F)		13°C
(56°F)
Average high5°C
(41°F)		7°C
(45°F)		10°C
(51°F)		14°C
(58°F)		18°C
(65°F)		23°C
(74°F)		23°C
(74°F)		23°C
(74°F)		19°C
(67°F)		15°C
(59°F)		9°C
(49°F)		6°C
(44°F)
Daily mean3°C
(38°F)		4°C
(40°F)		6°C
(44°F)		10°C
(50°F)		13°C
(56°F)		18°C
(66°F)		19°C
(66°F)		19°C
(66°F)		15°C
(59°F)		12°C
(53°F)		7°C
(44°F)		5°C
(40°F)
Average low1°C
(34°F)		1°C
(35°F)		3°C
(37°F)		5°C
(41°F)		9°C
(48°F)		14°C
(57°F)		14°C
(58°F)		15°C
(58°F)		11°C
(51°F)		9°C
(48°F)		4°C
(40°F)		3°C
(37°F)
Mean minimum-4°C
(24°F)		-5°C
(23°F)		-4°C
(26°F)		-2°C
(28°F)		2°C
(36°F)		8°C
(46°F)		9°C
(48°F)		9°C
(48°F)		5°C
(41°F)		2°C
(36°F)		-2°C
(29°F)		-4°C
(25°F)
Minimum-9°C
(16°F)		-16°C
(3°F)		-9°C
(16°F)		-4°C
(25°F)		0°C
(33°F)		6°C
(43°F)		8°C
(47°F)		7°C
(46°F)		1°C
(35°F)		0°C
(33°F)		-5°C
(23°F)		-7°C
(20°F)

Compare climate in Dortmund with other places

Compare temperature, precipitation, sunshine, UV index in Dortmund, Germany with other places around the world.

Monthly average precipitation in Dortmund, Germany

Dortmund usually has the most precipitation in July, October and December, with an average of 16 rainy days and 99 mm (3.9 inches) of precipitation per month. The driest months in Dortmund are April, September and November. On average, 56 mm (2.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Dortmund. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)78 (3.1)84 (3.3)85 (3.4)39 (1.6)73 (2.9)70 (2.7)98 (3.9)82 (3.2)68 (2.7)95 (3.7)59 (2.3)104 (4.1)
Average precipitation days (≥ 1 mm)14131591310141511151319

Monthly sunshine hours in Dortmund, Germany

The sunniest months in Dortmund are May, June and July, when the sun shines an average of 12 hours 45 minutes a day. Least sunny months in Dortmund: January, November and December receive an average of 4 hours 12 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Dortmund. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours100195257345385384403378314228171115
Mean daily daylight hours8h 23m9h 58m11h 54m13h 54m15h 38m16h 33m16h 4m14h 30m12h 35m10h 36m8h 50m7h 53m

Solar UV radiation in Dortmund, Germany

Dortmund 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 Dortmund UV Index data.

Average daily maximum UV levels by month for Dortmund. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)124578875421