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Monthly climate in Ilulissat, Greenland

Last updated: July 31, 2025

Under the Köppen–Geiger climate classification Ilulissat features a ice cap climate ET). Temperatures typically range between -18 °C (0 °F) and 10 °C (50 °F) through the year, but rarely can drop to -35 °C (-30 °F) or can rise to as high as 24 °C (76 °F). The average annual precipitation amounts to about 350 mm (13.8 inches) and receives 71 rainy days on the 1 mm (0.04 inches) threshold annually. Ilulissat enjoys an average of 2731 hours of sunshine throughout the year, and daylight varies from 0 hours 0 minutes to 24 hours 0 minutes per day.

Monthly average temperatures in Ilulissat, Greenland

The warmest months in Ilulissat are June, July and August, with daily mean temperatures ranging from 8 to 10 °C (46 - 50 °F) throughout the day. The coldest temperatures usually occur in January, February and March, when daily mean temperatures range from -18 to -15 °C (0 - 5 °F) throughout the day. On average each year, Ilulissat experiences 0 days above 25 °C (77.0 °F) and 231 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Ilulissat. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to June 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Maximum7°C
(44°F)		0°C
(33°F)		5°C
(41°F)		11°C
(52°F)		19°C
(66°F)		22°C
(72°F)		23°C
(73°F)		24°C
(76°F)		12°C
(54°F)		11°C
(52°F)		9°C
(48°F)		7°C
(44°F)
Mean maximum1°C
(34°F)		-2°C
(29°F)		2°C
(36°F)		7°C
(45°F)		13°C
(55°F)		17°C
(64°F)		21°C
(70°F)		19°C
(67°F)		10°C
(50°F)		8°C
(47°F)		7°C
(45°F)		1°C
(35°F)
Average high-13°C
(10°F)		-15°C
(5°F)		-12°C
(11°F)		-3°C
(27°F)		4°C
(40°F)		11°C
(52°F)		13°C
(56°F)		12°C
(54°F)		4°C
(40°F)		-1°C
(30°F)		-7°C
(20°F)		-9°C
(17°F)
Daily mean-16°C
(4°F)		-18°C
(-0°F)		-15°C
(5°F)		-6°C
(21°F)		1°C
(34°F)		8°C
(46°F)		10°C
(50°F)		8°C
(47°F)		1°C
(35°F)		-4°C
(25°F)		-10°C
(14°F)		-11°C
(12°F)
Average low-18°C
(-1°F)		-21°C
(-5°F)		-19°C
(-1°F)		-10°C
(14°F)		-3°C
(28°F)		4°C
(39°F)		6°C
(43°F)		4°C
(40°F)		-2°C
(29°F)		-7°C
(20°F)		-14°C
(8°F)		-14°C
(7°F)
Mean minimum-28°C
(-18°F)		-30°C
(-21°F)		-30°C
(-23°F)		-20°C
(-4°F)		-10°C
(15°F)		0°C
(33°F)		2°C
(36°F)		0°C
(32°F)		-8°C
(18°F)		-16°C
(4°F)		-24°C
(-11°F)		-23°C
(-8°F)
Minimum-31°C
(-24°F)		-34°C
(-30°F)		-35°C
(-30°F)		-26°C
(-14°F)		-17°C
(1°F)		-1°C
(30°F)		0°C
(33°F)		-1°C
(31°F)		-13°C
(10°F)		-23°C
(-10°F)		-27°C
(-16°F)		-27°C
(-17°F)

Compare climate in Ilulissat with other places

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

Monthly average precipitation in Ilulissat, Greenland

Ilulissat usually has the most precipitation in July, August and September, with an average of 8 rainy days and 48 mm (1.9 inches) of precipitation per month. The driest months in Ilulissat are January, February and May. On average, 14 mm (0.5 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Ilulissat. Generated using Copernicus Climate Change Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Average precipitation mm (inches)19 (0.7)9 (0.4)19 (0.7)28 (1.1)13 (0.5)24 (0.9)52 (2.1)52 (2.1)40 (1.6)38 (1.5)29 (1.2)26 (1.0)
Average precipitation days (≥ 1 mm)524735789777

Monthly sunshine hours in Ilulissat, Greenland

The sunniest months in Ilulissat are May, June and July, when the sun shines an average of 13 hours 40 minutes a day. Least sunny months in Ilulissat: January, November and December receive an average of 0 hours 37 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Ilulissat. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2017 to January 2022.
 JanFebMarAprMayJunJulAugSepOctNovDec
Mean monthly sunshine hours13111215310422426408361247170440
Mean daily daylight hours5h 31m7h 28m11h 47m16h 10m21h 54m24h 0m23h 19m17h 40m13h 10m8h 55m6h 47m0h 0m

Solar UV radiation in Ilulissat, Greenland

Ilulissat experiences the highest level of ultraviolet (UV) radiation in May, June and August, when the maximum UV index can reach values of 4 - 5, which corresponds to the Moderate category of sun exposure. February, October 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 Ilulissat UV Index data.

Average daily maximum UV levels by month for Ilulissat. Generated using Copernicus Atmosphere Monitoring Service information. Data for period from January 2022 to January 2023.
 JanFebMarAprMayJunJulAugSepOctNovDec
UV Index (month maximum)112345443110