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Ushuaia, Argentina climate
Cfc Subpolar oceanic
Ushuaia has a mildly seasonal cold-temperate climate (Subpolar oceanic, Köppen Cfc). The hottest month is January with an average daily high near 14°C, while the coldest is July averaging around −1°C at night. Precipitation is fairly even year-round, totalling about 480 mm. At latitude 55°S, day length swings from 7.0 hours in midwinter to 17.0 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)Ushuaia climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 14 | 14 | 13 | 10 | 7 | 5 | 5 | 6 | 8 | 11 | 13 | 14 |
| Avg temp (°C) | 10 | 10 | 9 | 7 | 4 | 2 | 2 | 3 | 5 | 7 | 8 | 9 |
| Avg low (°C) | 6 | 6 | 5 | 3 | 2 | 0 | −1 | 0 | 1 | 3 | 4 | 5 |
| Precipitation (mm) | 51 | 31 | 45 | 45 | 42 | 51 | 35 | 35 | 37 | 27 | 38 | 43 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 14 | 14 | 13 | 10 | 7 | 5 |
| Avg temp (°C) | 10 | 10 | 9 | 7 | 4 | 2 |
| Avg low (°C) | 6 | 6 | 5 | 3 | 2 | 0 |
| Precipitation (mm) | 51 | 31 | 45 | 45 | 42 | 51 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 5 | 6 | 8 | 11 | 13 | 14 |
| Avg temp (°C) | 2 | 3 | 5 | 7 | 8 | 9 |
| Avg low (°C) | −1 | 0 | 1 | 3 | 4 | 5 |
| Precipitation (mm) | 35 | 35 | 37 | 27 | 38 | 43 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 83 | 80 | 79 | 76 | 71 | 70 | 72 | 74 | 75 | 78 | 82 | 83 |
| Relative humidity (%) | 79 | 81 | 84 | 89 | 92 | 93 | 92 | 90 | 86 | 82 | 79 | 78 |
| Wind speed (km/h) | 18.0 | 17.7 | 17.4 | 16.7 | 16.1 | 16.4 | 17.6 | 18.7 | 18.5 | 19.3 | 19.0 | 18.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 83 | 80 | 79 | 76 | 71 | 70 |
| Relative humidity (%) | 79 | 81 | 84 | 89 | 92 | 93 |
| Wind speed (km/h) | 18.0 | 17.7 | 17.4 | 16.7 | 16.1 | 16.4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 72 | 74 | 75 | 78 | 82 | 83 |
| Relative humidity (%) | 92 | 90 | 86 | 82 | 79 | 78 |
| Wind speed (km/h) | 17.6 | 18.7 | 18.5 | 19.3 | 19.0 | 18.2 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Ushuaia Malvinas Argentinas, a weather station, about 4 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.