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Monthly climate in Osterode am Harz, Germany

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Osterode am Harz features a oceanic climate (Cfb). Temperatures typically range between 1 °C (34 °F) and 18 °C (65 °F) through the year, but rarely can drop to -18 °C (0 °F) or can rise to as high as 35 °C (94 °F). The average annual precipitation amounts to about 839 mm (33.0 inches) and receives 156 rainy days on the 1 mm (0.04 inches) threshold annually. Osterode am Harz enjoys an average of 3334 hours of sunshine throughout the year, and daylight varies from 7 hours 52 minutes to 16 hours 33 minutes per day.

Monthly average temperatures in Osterode am Harz, Germany

The warmest months in Osterode am Harz are June, July and August, with daily mean temperatures ranging from 17 to 18 °C (64 - 65 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 1 to 3 °C (34 - 37 °F) throughout the day. On average each year, Osterode am Harz experiences 21 days above 25 °C (77.0 °F) and 66 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Osterode am Harz. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum12°C
(54°F)		16°C
(61°F)		20°C
(69°F)		25°C
(78°F)		28°C
(83°F)		32°C
(90°F)		35°C
(94°F)		34°C
(94°F)		30°C
(87°F)		25°C
(77°F)		19°C
(66°F)		13°C
(55°F)
Mean maximum10°C
(51°F)		13°C
(55°F)		17°C
(63°F)		22°C
(72°F)		25°C
(78°F)		27°C
(81°F)		30°C
(85°F)		30°C
(87°F)		27°C
(81°F)		22°C
(71°F)		15°C
(60°F)		11°C
(53°F)
Average high3°C
(38°F)		5°C
(41°F)		8°C
(47°F)		13°C
(55°F)		17°C
(62°F)		22°C
(72°F)		22°C
(72°F)		23°C
(73°F)		18°C
(65°F)		14°C
(57°F)		7°C
(45°F)		4°C
(40°F)
Daily mean1°C
(34°F)		2°C
(35°F)		4°C
(40°F)		8°C
(47°F)		12°C
(54°F)		17°C
(64°F)		18°C
(64°F)		18°C
(65°F)		14°C
(57°F)		10°C
(51°F)		5°C
(42°F)		3°C
(37°F)
Average low-1°C
(30°F)		-1°C
(30°F)		1°C
(33°F)		3°C
(38°F)		7°C
(45°F)		12°C
(55°F)		13°C
(55°F)		13°C
(56°F)		9°C
(49°F)		7°C
(45°F)		3°C
(38°F)		1°C
(34°F)
Mean minimum-9°C
(17°F)		-8°C
(17°F)		-6°C
(22°F)		-4°C
(25°F)		0°C
(33°F)		6°C
(43°F)		7°C
(46°F)		8°C
(46°F)		4°C
(39°F)		1°C
(34°F)		-2°C
(28°F)		-5°C
(23°F)
Minimum-18°C
(0°F)		-18°C
(-0°F)		-14°C
(7°F)		-5°C
(23°F)		-1°C
(30°F)		2°C
(37°F)		5°C
(42°F)		6°C
(43°F)		1°C
(33°F)		-2°C
(29°F)		-4°C
(26°F)		-11°C
(13°F)

Compare climate in Osterode am Harz with other places

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

Monthly average precipitation in Osterode am Harz, Germany

Osterode am Harz usually has the most precipitation in June, July and December, with an average of 14 rainy days and 82 mm (3.2 inches) of precipitation per month. The driest months in Osterode am Harz are April, September and November. On average, 50 mm (2.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Osterode am Harz. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)73 (2.9)72 (2.8)73 (2.9)44 (1.7)71 (2.8)81 (3.2)86 (3.4)74 (2.9)58 (2.3)78 (3.1)49 (1.9)80 (3.1)
Average precipitation days (≥ 1 mm)131215101213131411151117

Monthly sunshine hours in Osterode am Harz, Germany

The sunniest months in Osterode am Harz are May, June and July, when the sun shines an average of 12 hours 54 minutes a day. Least sunny months in Osterode am Harz: January, November and December receive an average of 4 hours 17 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Osterode am Harz. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours98193267344382399406381314251168127
Mean daily daylight hours8h 23m9h 57m11h 55m13h 54m15h 39m16h 33m16h 4m14h 30m12h 35m10h 36m8h 49m7h 52m

Solar UV radiation in Osterode am Harz, Germany

Osterode am Harz 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 Osterode am Harz UV Index data.

Average daily maximum UV levels by month for Osterode am Harz. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)124578876421