nomadseason

Monthly climate in Geilo, Norway

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Geilo features a subarctic climate (Dfc). Temperatures typically range between -6 °C (21 °F) and 12 °C (54 °F) through the year, but rarely can drop to -28 °C (-17 °F) or can rise to as high as 26 °C (79 °F). The average annual precipitation amounts to about 992 mm (39.0 inches) and receives 163 rainy days on the 1 mm (0.04 inches) threshold annually. Geilo enjoys an average of 3157 hours of sunshine throughout the year, and daylight varies from 5 hours 48 minutes to 18 hours 55 minutes per day.

Monthly average temperatures in Geilo, Norway

The warmest months in Geilo 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 -6 to -5 °C (21 - 22 °F) throughout the day. On average each year, Geilo experiences 0 days above 25 °C (77.0 °F) and 183 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Geilo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum6°C
(43°F)		6°C
(43°F)		7°C
(45°F)		15°C
(59°F)		23°C
(73°F)		24°C
(75°F)		26°C
(79°F)		23°C
(73°F)		20°C
(69°F)		14°C
(57°F)		9°C
(48°F)		6°C
(43°F)
Mean maximum4°C
(39°F)		3°C
(38°F)		6°C
(42°F)		11°C
(52°F)		19°C
(66°F)		19°C
(67°F)		22°C
(73°F)		20°C
(69°F)		16°C
(62°F)		11°C
(52°F)		6°C
(43°F)		4°C
(40°F)
Average high-3°C
(27°F)		-3°C
(26°F)		-1°C
(31°F)		3°C
(39°F)		9°C
(48°F)		15°C
(59°F)		17°C
(62°F)		15°C
(59°F)		10°C
(50°F)		5°C
(41°F)		-0°C
(32°F)		-3°C
(26°F)
Daily mean-6°C
(22°F)		-6°C
(21°F)		-4°C
(25°F)		-0°C
(31°F)		5°C
(41°F)		11°C
(51°F)		12°C
(54°F)		10°C
(51°F)		7°C
(44°F)		2°C
(36°F)		-3°C
(28°F)		-5°C
(22°F)
Average low-9°C
(17°F)		-9°C
(15°F)		-8°C
(18°F)		-5°C
(24°F)		0°C
(33°F)		6°C
(43°F)		7°C
(46°F)		6°C
(43°F)		4°C
(39°F)		-0°C
(32°F)		-5°C
(23°F)		-8°C
(18°F)
Mean minimum-19°C
(-2°F)		-20°C
(-3°F)		-19°C
(-2°F)		-13°C
(8°F)		-8°C
(17°F)		2°C
(36°F)		2°C
(36°F)		1°C
(34°F)		-1°C
(31°F)		-8°C
(17°F)		-19°C
(-1°F)		-19°C
(-2°F)
Minimum-24°C
(-11°F)		-25°C
(-13°F)		-24°C
(-10°F)		-19°C
(-2°F)		-12°C
(10°F)		-0°C
(32°F)		0°C
(32°F)		0°C
(33°F)		-2°C
(29°F)		-14°C
(7°F)		-28°C
(-17°F)		-22°C
(-7°F)

Compare climate in Geilo with other places

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

Monthly average precipitation in Geilo, Norway

Geilo usually has the most precipitation in September, October and December, with an average of 17 rainy days and 110 mm (4.3 inches) of precipitation per month. The driest months in Geilo are January, February and April. On average, 57 mm (2.2 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Geilo. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)61 (2.4)60 (2.4)68 (2.7)48 (1.9)63 (2.5)96 (3.8)85 (3.3)93 (3.7)115 (4.5)113 (4.4)88 (3.5)101 (4.0)
Average precipitation days (≥ 1 mm)12121391113121417181517

Monthly sunshine hours in Geilo, Norway

The sunniest months in Geilo are May, June and July, when the sun shines an average of 13 hours 57 minutes a day. Least sunny months in Geilo: January, November and December receive an average of 2 hours 44 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Geilo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours7716628036041041545738024518911064
Mean daily daylight hours6h 38m9h 4m11h 51m14h 42m17h 21m18h 55m18h 4m15h 35m12h 48m10h 0m7h 21m5h 48m

Solar UV radiation in Geilo, Norway

Geilo experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 6 - 7, which corresponds to the High category of sun exposure. January, November and December 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 Geilo UV Index data.

Average daily maximum UV levels by month for Geilo. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)123567764211