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Monthly climate in Baltrum, Germany

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Baltrum features a oceanic climate (Cfb). Temperatures typically range between 4 °C (40 °F) and 18 °C (65 °F) through the year, but rarely can drop to -7 °C (21 °F) or can rise to as high as 26 °C (80 °F). The average annual precipitation amounts to about 967 mm (38.1 inches) and receives 168 rainy days on the 1 mm (0.04 inches) threshold annually. Baltrum enjoys an average of 3437 hours of sunshine throughout the year, and daylight varies from 7 hours 31 minutes to 16 hours 57 minutes per day.

Monthly average temperatures in Baltrum, Germany

The warmest months in Baltrum are July, August and September, with daily mean temperatures ranging from 16 to 18 °C (61 - 65 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from 4 to 5 °C (40 - 42 °F) throughout the day. On average each year, Baltrum experiences 1 days above 25 °C (77.0 °F) and 10 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Baltrum. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum11°C
(52°F)		12°C
(54°F)		13°C
(56°F)		17°C
(63°F)		21°C
(70°F)		25°C
(78°F)		26°C
(80°F)		25°C
(78°F)		25°C
(77°F)		21°C
(71°F)		17°C
(62°F)		11°C
(52°F)
Mean maximum10°C
(50°F)		10°C
(50°F)		12°C
(53°F)		15°C
(60°F)		19°C
(66°F)		21°C
(71°F)		24°C
(75°F)		24°C
(75°F)		22°C
(72°F)		18°C
(65°F)		14°C
(58°F)		10°C
(51°F)
Average high6°C
(43°F)		6°C
(42°F)		7°C
(45°F)		9°C
(49°F)		13°C
(55°F)		17°C
(63°F)		19°C
(66°F)		20°C
(68°F)		17°C
(64°F)		14°C
(58°F)		10°C
(50°F)		7°C
(45°F)
Daily mean5°C
(41°F)		4°C
(40°F)		5°C
(42°F)		8°C
(46°F)		11°C
(53°F)		16°C
(60°F)		17°C
(63°F)		18°C
(65°F)		16°C
(61°F)		13°C
(55°F)		9°C
(48°F)		6°C
(43°F)
Average low4°C
(39°F)		3°C
(38°F)		4°C
(39°F)		6°C
(43°F)		10°C
(50°F)		14°C
(57°F)		16°C
(61°F)		17°C
(62°F)		14°C
(58°F)		12°C
(53°F)		7°C
(45°F)		5°C
(41°F)
Mean minimum-1°C
(30°F)		-1°C
(30°F)		0°C
(33°F)		2°C
(36°F)		5°C
(42°F)		10°C
(51°F)		13°C
(56°F)		14°C
(57°F)		11°C
(53°F)		8°C
(46°F)		3°C
(37°F)		1°C
(33°F)
Minimum-4°C
(25°F)		-6°C
(22°F)		-7°C
(21°F)		2°C
(35°F)		4°C
(40°F)		9°C
(49°F)		13°C
(55°F)		13°C
(55°F)		11°C
(51°F)		6°C
(42°F)		1°C
(34°F)		-2°C
(29°F)

Compare climate in Baltrum with other places

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

Monthly average precipitation in Baltrum, Germany

Baltrum usually has the most precipitation in August, October and December, with an average of 17 rainy days and 108 mm (4.3 inches) of precipitation per month. The driest months in Baltrum are April, May and June. On average, 55 mm (2.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Baltrum. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)77 (3.0)72 (2.8)71 (2.8)44 (1.7)54 (2.1)67 (2.6)89 (3.5)108 (4.3)92 (3.6)121 (4.7)77 (3.0)95 (3.8)
Average precipitation days (≥ 1 mm)15131291211131713181718

Monthly sunshine hours in Baltrum, Germany

The sunniest months in Baltrum are May, June and July, when the sun shines an average of 13 hours 26 minutes a day. Least sunny months in Baltrum: January, November and December receive an average of 4 hours 28 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Baltrum. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours100194280358412407417393315244182129
Mean daily daylight hours8h 4m9h 48m11h 54m14h 3m15h 57m16h 57m16h 25m14h 42m12h 37m10h 29m8h 34m7h 31m

Solar UV radiation in Baltrum, Germany

Baltrum experiences the highest level of ultraviolet (UV) radiation in May, June 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 Baltrum UV Index data.

Average daily maximum UV levels by month for Baltrum. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)123578775321