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Monthly climate in Isny, Germany

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Isny features a oceanic climate (Cfb). Temperatures typically range between 0 °C (32 °F) and 18 °C (65 °F) through the year, but rarely can drop to -21 °C (-5 °F) or can rise to as high as 33 °C (92 °F). The average annual precipitation amounts to about 1462 mm (57.5 inches) and receives 170 rainy days on the 1 mm (0.04 inches) threshold annually. Isny enjoys an average of 3509 hours of sunshine throughout the year, and daylight varies from 8 hours 27 minutes to 15 hours 56 minutes per day.

Monthly average temperatures in Isny, Germany

The warmest months in Isny are June, July and August, with daily mean temperatures ranging from 17 to 18 °C (63 - 65 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 0 to 2 °C (32 - 36 °F) throughout the day. On average each year, Isny experiences 27 days above 25 °C (77.0 °F) and 84 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Isny. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum15°C
(60°F)		18°C
(64°F)		21°C
(70°F)		25°C
(77°F)		29°C
(85°F)		33°C
(91°F)		33°C
(92°F)		33°C
(91°F)		27°C
(81°F)		23°C
(74°F)		19°C
(67°F)		14°C
(58°F)
Mean maximum10°C
(51°F)		14°C
(57°F)		18°C
(65°F)		23°C
(73°F)		26°C
(79°F)		27°C
(81°F)		30°C
(86°F)		31°C
(87°F)		25°C
(77°F)		21°C
(71°F)		17°C
(63°F)		12°C
(53°F)
Average high3°C
(38°F)		6°C
(43°F)		10°C
(50°F)		14°C
(58°F)		17°C
(62°F)		22°C
(72°F)		23°C
(73°F)		23°C
(74°F)		18°C
(65°F)		14°C
(58°F)		8°C
(46°F)		4°C
(40°F)
Daily mean0°C
(32°F)		2°C
(36°F)		5°C
(41°F)		9°C
(48°F)		12°C
(54°F)		17°C
(63°F)		18°C
(65°F)		18°C
(65°F)		14°C
(57°F)		10°C
(49°F)		4°C
(40°F)		2°C
(35°F)
Average low-3°C
(28°F)		-1°C
(30°F)		1°C
(33°F)		3°C
(39°F)		7°C
(46°F)		12°C
(54°F)		13°C
(56°F)		14°C
(57°F)		9°C
(49°F)		6°C
(43°F)		2°C
(35°F)		-1°C
(31°F)
Mean minimum-10°C
(15°F)		-9°C
(16°F)		-6°C
(21°F)		-4°C
(26°F)		1°C
(34°F)		6°C
(43°F)		9°C
(48°F)		8°C
(47°F)		3°C
(38°F)		0°C
(33°F)		-3°C
(27°F)		-7°C
(19°F)
Minimum-21°C
(-5°F)		-14°C
(7°F)		-15°C
(5°F)		-5°C
(23°F)		-3°C
(27°F)		5°C
(41°F)		8°C
(46°F)		7°C
(45°F)		1°C
(35°F)		-1°C
(31°F)		-4°C
(26°F)		-10°C
(14°F)

Compare climate in Isny with other places

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

Monthly average precipitation in Isny, Germany

Isny usually has the most precipitation in May, July and August, with an average of 16 rainy days and 153 mm (6.0 inches) of precipitation per month. The driest months in Isny are February, April and November. On average, 83 mm (3.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Isny. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)126 (5.0)100 (3.9)113 (4.4)76 (3.0)158 (6.2)144 (5.7)148 (5.8)153 (6.0)105 (4.1)118 (4.7)71 (2.8)148 (5.8)
Average precipitation days (≥ 1 mm)121216101716151612131219

Monthly sunshine hours in Isny, Germany

The sunniest months in Isny are June, July and August, when the sun shines an average of 12 hours 34 minutes a day. Least sunny months in Isny: January, November and December receive an average of 5 hours 59 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Isny. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours156222290345355383403370311275216177
Mean daily daylight hours8h 52m10h 14m11h 55m13h 40m15h 9m15h 56m15h 31m14h 11m12h 31m10h 47m9h 15m8h 27m

Solar UV radiation in Isny, Germany

Isny 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, February and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Isny UV Index data.

Average daily maximum UV levels by month for Isny. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)235789986432