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Aasiaat, Greenland climate
ET Tundra
Aasiaat has a seasonal subarctic climate (Tundra, Köppen ET). The hottest month is July with an average daily high near 10°C, while the coldest is February averaging around −18°C at night. Around 341 mm of precipitation falls each year, peaking in August (55 mm) and easing off in May (15 mm). At latitude 69°N, day length swings from 0.0 hours in midwinter to 24.0 hours at midsummer.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Aasiaat climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | −8 | −12 | −11 | −5 | 2 | 7 | 10 | 9 | 5 | 1 | −3 | −5 |
| Avg temp (°C) | −11 | −15 | −15 | −8 | −1 | 4 | 7 | 7 | 3 | −1 | −5 | −8 |
| Avg low (°C) | −15 | −18 | −18 | −11 | −3 | 2 | 4 | 4 | 1 | −3 | −8 | −11 |
| Precipitation (mm) | 38 | 17 | 20 | 22 | 15 | 15 | 18 | 55 | 25 | 36 | 38 | 40 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | −8 | −12 | −11 | −5 | 2 | 7 |
| Avg temp (°C) | −11 | −15 | −15 | −8 | −1 | 4 |
| Avg low (°C) | −15 | −18 | −18 | −11 | −3 | 2 |
| Precipitation (mm) | 38 | 17 | 20 | 22 | 15 | 15 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 10 | 9 | 5 | 1 | −3 | −5 |
| Avg temp (°C) | 7 | 7 | 3 | −1 | −5 | −8 |
| Avg low (°C) | 4 | 4 | 1 | −3 | −8 | −11 |
| Precipitation (mm) | 18 | 55 | 25 | 36 | 38 | 40 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 11 | 8 | 8 | 7 | 6 | 5 | 4 | 6 | 7 | 9 | 11 | 13 |
| Days with low ≤ 0°C (days) | 23 | 20 | 23 | 23 | 22 | 8 | 2 | 1 | 7 | 21 | 24 | 24 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 11 | 8 | 8 | 7 | 6 | 5 |
| Days with low ≤ 0°C (days) | 23 | 20 | 23 | 23 | 22 | 8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 4 | 6 | 7 | 9 | 11 | 13 |
| Days with low ≤ 0°C (days) | 2 | 1 | 7 | 21 | 24 | 24 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 85 | 83 | 80 | 77 | 75 | 72 | 70 | 74 | 73 | 78 | 84 | 85 |
| Relative humidity (%) | 91 | 93 | 91 | 86 | 83 | 83 | 83 | 85 | 82 | 82 | 85 | 87 |
| Wind speed (km/h) | 13.7 | 11.6 | 11.5 | 11.3 | 10.3 | 9.2 | 8.1 | 8.6 | 11.2 | 12.8 | 14.4 | 15.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 85 | 83 | 80 | 77 | 75 | 72 |
| Relative humidity (%) | 91 | 93 | 91 | 86 | 83 | 83 |
| Wind speed (km/h) | 13.7 | 11.6 | 11.5 | 11.3 | 10.3 | 9.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 70 | 74 | 73 | 78 | 84 | 85 |
| Relative humidity (%) | 83 | 85 | 82 | 82 | 85 | 87 |
| Wind speed (km/h) | 8.1 | 8.6 | 11.2 | 12.8 | 14.4 | 15.0 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 27 years of daily observations at Aasiaat (egedesminde), a weather station, about 1 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.