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Monthly climate in Sisimiut, Greenland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Sisimiut features a ice cap climate ET). Temperatures typically range between -17 °C (2 °F) and 7 °C (44 °F) through the year, but rarely can drop to -30 °C (-21 °F) or can rise to as high as 14 °C (57 °F). The average annual precipitation amounts to about 640 mm (25.2 inches) and receives 121 rainy days on the 1 mm (0.04 inches) threshold annually. Sisimiut enjoys an average of 2378 hours of sunshine throughout the year, and daylight varies from 5 hours 20 minutes to 23 hours 58 minutes per day.

Monthly average temperatures in Sisimiut, Greenland

The warmest months in Sisimiut are June, July and August, with daily mean temperatures ranging from 3 to 7 °C (38 - 44 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from -17 to -12 °C (2 - 11 °F) throughout the day. On average each year, Sisimiut experiences 0 days above 25 °C (77.0 °F) and 223 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Sisimiut. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum2°C
(37°F)		-3°C
(27°F)		-0°C
(32°F)		5°C
(42°F)		9°C
(48°F)		12°C
(54°F)		14°C
(57°F)		13°C
(56°F)		9°C
(49°F)		7°C
(44°F)		4°C
(39°F)		5°C
(41°F)
Mean maximum-1°C
(30°F)		-6°C
(21°F)		-2°C
(29°F)		3°C
(37°F)		6°C
(44°F)		8°C
(47°F)		12°C
(54°F)		13°C
(55°F)		8°C
(47°F)		5°C
(41°F)		3°C
(38°F)		1°C
(34°F)
Average high-10°C
(14°F)		-15°C
(5°F)		-11°C
(12°F)		-4°C
(24°F)		1°C
(34°F)		5°C
(41°F)		8°C
(46°F)		8°C
(47°F)		4°C
(39°F)		0°C
(33°F)		-4°C
(25°F)		-6°C
(22°F)
Daily mean-12°C
(11°F)		-17°C
(2°F)		-13°C
(8°F)		-6°C
(21°F)		-1°C
(31°F)		3°C
(38°F)		6°C
(43°F)		7°C
(44°F)		3°C
(37°F)		-1°C
(30°F)		-6°C
(22°F)		-7°C
(19°F)
Average low-14°C
(8°F)		-18°C
(-1°F)		-16°C
(4°F)		-8°C
(18°F)		-2°C
(28°F)		2°C
(35°F)		4°C
(40°F)		5°C
(41°F)		1°C
(35°F)		-3°C
(28°F)		-8°C
(19°F)		-9°C
(16°F)
Mean minimum-19°C
(-3°F)		-24°C
(-12°F)		-24°C
(-10°F)		-16°C
(3°F)		-7°C
(20°F)		-1°C
(30°F)		1°C
(34°F)		2°C
(37°F)		-2°C
(28°F)		-9°C
(17°F)		-14°C
(7°F)		-14°C
(6°F)
Minimum-23°C
(-8°F)		-30°C
(-21°F)		-26°C
(-15°F)		-20°C
(-3°F)		-11°C
(12°F)		-2°C
(28°F)		-1°C
(31°F)		2°C
(35°F)		-4°C
(25°F)		-12°C
(11°F)		-15°C
(5°F)		-16°C
(4°F)

Compare climate in Sisimiut with other places

Compare temperature, precipitation, sunshine, UV index in Sisimiut, Greenland with other places around the world.

Monthly average precipitation in Sisimiut, Greenland

Sisimiut usually has the most precipitation in July, October and November, with an average of 12 rainy days and 77 mm (3.0 inches) of precipitation per month. The driest months in Sisimiut are February, May and June. On average, 25 mm (1.0 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Sisimiut. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)49 (1.9)19 (0.8)44 (1.8)51 (2.0)21 (0.8)35 (1.4)80 (3.2)66 (2.6)53 (2.1)75 (2.9)75 (3.0)70 (2.8)
Average precipitation days (≥ 1 mm)125101049111110111414

Monthly sunshine hours in Sisimiut, Greenland

The sunniest months in Sisimiut are May, June and July, when the sun shines an average of 11 hours 13 minutes a day. Least sunny months in Sisimiut: January, November and December receive an average of 0 hours 39 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Sisimiut. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours18124207286356332343301228135411
Mean daily daylight hours6h 10m8h 2m11h 49m15h 39m20h 0m23h 58m21h 45m16h 54m13h 2m9h 17m5h 20m18h 21m

Solar UV radiation in Sisimiut, Greenland

Sisimiut experiences the highest level of ultraviolet (UV) radiation in May, June and July, when the maximum UV index can reach values of 5 - 6, 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 Sisimiut UV Index data.

Average daily maximum UV levels by month for Sisimiut. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)112456543211