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Monthly climate in Os, Norway

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Os features a subarctic climate (Dfc). Temperatures typically range between -7 °C (20 °F) and 12 °C (54 °F) through the year, but rarely can drop to -30 °C (-22 °F) or can rise to as high as 28 °C (82 °F). The average annual precipitation amounts to about 808 mm (31.8 inches) and receives 174 rainy days on the 1 mm (0.04 inches) threshold annually. Os enjoys an average of 3042 hours of sunshine throughout the year, and daylight varies from 5 hours 6 minutes to 19 hours 47 minutes per day.

Monthly average temperatures in Os, Norway

The warmest months in Os are June, July and August, with daily mean temperatures ranging from 10 to 12 °C (51 - 54 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -7 to -6 °C (20 - 22 °F) throughout the day. On average each year, Os experiences 2 days above 25 °C (77.0 °F) and 192 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Os. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum5°C
(42°F)		6°C
(43°F)		9°C
(48°F)		16°C
(60°F)		26°C
(79°F)		28°C
(82°F)		28°C
(82°F)		24°C
(76°F)		19°C
(66°F)		14°C
(58°F)		10°C
(50°F)		6°C
(43°F)
Mean maximum3°C
(38°F)		3°C
(38°F)		7°C
(44°F)		11°C
(52°F)		20°C
(68°F)		21°C
(71°F)		24°C
(76°F)		21°C
(70°F)		16°C
(61°F)		11°C
(51°F)		6°C
(43°F)		4°C
(39°F)
Average high-4°C
(24°F)		-4°C
(24°F)		-1°C
(31°F)		3°C
(38°F)		9°C
(49°F)		15°C
(60°F)		17°C
(62°F)		15°C
(59°F)		10°C
(50°F)		4°C
(40°F)		-1°C
(30°F)		-4°C
(26°F)
Daily mean-7°C
(20°F)		-7°C
(20°F)		-4°C
(25°F)		-1°C
(31°F)		5°C
(41°F)		11°C
(52°F)		12°C
(54°F)		10°C
(51°F)		7°C
(44°F)		2°C
(36°F)		-3°C
(26°F)		-6°C
(22°F)
Average low-10°C
(15°F)		-10°C
(14°F)		-8°C
(19°F)		-5°C
(24°F)		1°C
(33°F)		6°C
(43°F)		7°C
(45°F)		6°C
(43°F)		4°C
(39°F)		-0°C
(32°F)		-6°C
(21°F)		-8°C
(17°F)
Mean minimum-19°C
(-2°F)		-20°C
(-5°F)		-17°C
(1°F)		-14°C
(8°F)		-7°C
(20°F)		0°C
(33°F)		1°C
(34°F)		-1°C
(31°F)		-1°C
(30°F)		-9°C
(17°F)		-18°C
(-1°F)		-18°C
(-0°F)
Minimum-22°C
(-7°F)		-28°C
(-17°F)		-30°C
(-22°F)		-18°C
(-0°F)		-10°C
(14°F)		-3°C
(27°F)		-1°C
(31°F)		-2°C
(29°F)		-2°C
(29°F)		-16°C
(4°F)		-22°C
(-7°F)		-24°C
(-10°F)

Compare climate in Os with other places

Compare temperature, precipitation, sunshine, UV index in Os, Norway with other places around the world.

Monthly average precipitation in Os, Norway

Os usually has the most precipitation in June, July and August, with an average of 15 rainy days and 96 mm (3.8 inches) of precipitation per month. The driest months in Os are January, February and November. On average, 47 mm (1.9 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Os. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)51 (2.0)38 (1.5)56 (2.2)55 (2.2)63 (2.5)87 (3.4)93 (3.7)108 (4.2)69 (2.7)76 (3.0)54 (2.1)59 (2.3)
Average precipitation days (≥ 1 mm)131015151416161416171216

Monthly sunshine hours in Os, Norway

The sunniest months in Os are May, June and July, when the sun shines an average of 13 hours 56 minutes a day. Least sunny months in Os: January, November and December receive an average of 2 hours 12 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Os. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours6015927435140942245035524616910537
Mean daily daylight hours6h 5m8h 48m11h 50m14h 55m17h 54m19h 47m18h 44m15h 54m12h 52m9h 50m6h 54m5h 6m

Solar UV radiation in Os, Norway

Os experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 5 - 7, which corresponds to the Moderate / High category of sun exposure. January, February and November are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 1. For more detailed information, check out our hourly Os UV Index data.

Average daily maximum UV levels by month for Os. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)113457754211