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Monthly climate in Giesen, Germany

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Giesen features a oceanic climate (Cfb). Temperatures typically range between 3 °C (37 °F) and 19 °C (67 °F) through the year, but rarely can drop to -17 °C (2 °F) or can rise to as high as 36 °C (98 °F). The average annual precipitation amounts to about 746 mm (29.4 inches) and receives 140 rainy days on the 1 mm (0.04 inches) threshold annually. Giesen enjoys an average of 3240 hours of sunshine throughout the year, and daylight varies from 7 hours 46 minutes to 16 hours 40 minutes per day.

Monthly average temperatures in Giesen, Germany

The warmest months in Giesen are June, July and August, with daily mean temperatures ranging from 18 to 19 °C (65 - 67 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 3 to 4 °C (37 - 40 °F) throughout the day. On average each year, Giesen experiences 32 days above 25 °C (77.0 °F) and 40 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Giesen. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum14°C
(58°F)		19°C
(66°F)		21°C
(71°F)		27°C
(80°F)		31°C
(88°F)		33°C
(92°F)		36°C
(98°F)		36°C
(97°F)		32°C
(90°F)		26°C
(80°F)		20°C
(69°F)		14°C
(57°F)
Mean maximum12°C
(54°F)		15°C
(59°F)		18°C
(65°F)		24°C
(75°F)		27°C
(81°F)		28°C
(83°F)		31°C
(88°F)		32°C
(90°F)		29°C
(84°F)		23°C
(73°F)		17°C
(63°F)		13°C
(55°F)
Average high5°C
(41°F)		6°C
(44°F)		10°C
(49°F)		14°C
(57°F)		18°C
(64°F)		23°C
(74°F)		23°C
(74°F)		24°C
(76°F)		20°C
(68°F)		15°C
(59°F)		9°C
(48°F)		6°C
(43°F)
Daily mean3°C
(37°F)		3°C
(39°F)		6°C
(42°F)		9°C
(49°F)		13°C
(56°F)		18°C
(65°F)		19°C
(66°F)		19°C
(67°F)		15°C
(59°F)		12°C
(53°F)		7°C
(44°F)		4°C
(40°F)
Average low1°C
(34°F)		1°C
(34°F)		2°C
(36°F)		4°C
(40°F)		8°C
(47°F)		13°C
(56°F)		14°C
(57°F)		14°C
(58°F)		11°C
(51°F)		9°C
(48°F)		4°C
(40°F)		2°C
(36°F)
Mean minimum-5°C
(24°F)		-6°C
(21°F)		-4°C
(25°F)		-3°C
(28°F)		1°C
(35°F)		7°C
(45°F)		9°C
(48°F)		8°C
(47°F)		4°C
(40°F)		2°C
(35°F)		-1°C
(30°F)		-4°C
(25°F)
Minimum-11°C
(13°F)		-17°C
(2°F)		-11°C
(12°F)		-5°C
(24°F)		-0°C
(32°F)		4°C
(39°F)		7°C
(44°F)		6°C
(44°F)		1°C
(34°F)		-2°C
(28°F)		-3°C
(27°F)		-10°C
(14°F)

Compare climate in Giesen with other places

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

Monthly average precipitation in Giesen, Germany

Giesen usually has the most precipitation in July, October and December, with an average of 13 rainy days and 73 mm (2.9 inches) of precipitation per month. The driest months in Giesen are January, April and November. On average, 49 mm (1.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Giesen. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)58 (2.3)59 (2.3)63 (2.5)44 (1.7)63 (2.5)68 (2.7)81 (3.2)67 (2.6)59 (2.3)71 (2.8)44 (1.7)69 (2.7)
Average precipitation days (≥ 1 mm)12111491110121210141015

Monthly sunshine hours in Giesen, Germany

The sunniest months in Giesen are June, July and August, when the sun shines an average of 12 hours 38 minutes a day. Least sunny months in Giesen: January, November and December receive an average of 4 hours 2 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Giesen. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours95185258336376389395378308240158117
Mean daily daylight hours8h 17m9h 55m11h 54m13h 57m15h 44m16h 40m16h 10m14h 34m12h 36m10h 34m8h 45m7h 46m

Solar UV radiation in Giesen, Germany

Giesen 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 Giesen UV Index data.

Average daily maximum UV levels by month for Giesen. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)124578775321