July
OK
13.2°C / 6.1°C
10 rain days
cool, rainy
- manageable rain (10 days)
Best time to visit Ilulissat
Ilulissat, Greenland — ranked month by month from data: temperature, rainfall, snow, and peak hazard seasons. Every month has trade-offs — pick what you can tolerate.
Best · July & August
About Ilulissat
Ilulissat, also known as Jakobshavn or Jacobshavn, is the municipal seat and largest town of the Avannaata municipality in western Greenland, located approximately 350 km (220 mi) north of the Arctic Circle. With a population of 5,149 as of 2025, it is the third-largest city in Greenland, after Nuuk and Sisimiut. The city is home to almost as many sled-dogs as people.
— condensed from Wikipedia
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OK — shoulder months
August
OK
10.6°C / 4.2°C
13 rain days
cool, rainy
June
OK
9.7°C / 3.3°C
10 rain days
chilly, rainy
- manageable rain (10 days)
Months to skip
September
Skip
4.4°C / -1.2°C
14 rain days
cold, freezing nights, rainy
- freezing at night (-1.2°C)
- heavy rain expected (14 days)
May
Skip
3.1°C / -2.9°C
10 rain days
cold, freezing nights, rainy
- freezing at night (-2.9°C)
October
Skip
-2.1°C / -7.6°C
13 rain days
cold, freezing nights, rainy
- bitterly cold (overnight -7.6°C)
April
Skip
-3.4°C / -10.1°C
11 rain days
cold, freezing nights, rainy
- bitterly cold (overnight -10.1°C)
November
Skip
-7.2°C / -13.3°C
12 rain days
cold, freezing nights, rainy
- bitterly cold (overnight -13.3°C)
December
Skip
-9.5°C / -15.4°C
12 rain days
cold, freezing nights, rainy
- bitterly cold (overnight -15.4°C)
March
Skip
-10.9°C / -18°C
11 rain days
cold, freezing nights, rainy
- bitterly cold (overnight -18°C)
January
Skip
-12.6°C / -19°C
13 rain days
cold, freezing nights, rainy
- bitterly cold (overnight -19°C)
February
Skip
-14.4°C / -21.2°C
10 rain days
cold, freezing nights, rainy
- bitterly cold (overnight -21.2°C)
How we ranked these
Each month is scored on temperature comfort (18–27°C avg high is the sweet spot), rainfall (more rain days = lower score), snow days, and peak hazard seasons (hurricanes, monsoons, etc.). Green-tier months are within ideal range with no major issues. Yellow are workable but with trade-offs. Red has at least one significant problem — extreme heat or cold, heavy rain, or peak storm season.