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Salta, Argentina climate
Cwb Subtropical highland (dry winter)
Salta has a mildly seasonal mild-temperate climate (Subtropical highland (dry winter), Köppen Cwb). The hottest month is December with an average daily high near 28°C, while the coldest is July averaging around 3°C at night. Precipitation totals about 738 mm a year and is strongly seasonal — January alone averages 197 mm while August barely receives 2 mm.
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)Salta climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 28 | 27 | 25 | 23 | 20 | 20 | 20 | 23 | 25 | 27 | 28 | 28 |
| Avg temp (°C) | 22 | 21 | 19 | 17 | 13 | 11 | 10 | 13 | 16 | 19 | 21 | 22 |
| Avg low (°C) | 17 | 16 | 15 | 12 | 8 | 5 | 3 | 5 | 8 | 12 | 14 | 16 |
| Precipitation (mm) | 197 | 147 | 107 | 42 | 10 | 2 | 3 | 2 | 6 | 24 | 59 | 138 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 28 | 27 | 25 | 23 | 20 | 20 |
| Avg temp (°C) | 22 | 21 | 19 | 17 | 13 | 11 |
| Avg low (°C) | 17 | 16 | 15 | 12 | 8 | 5 |
| Precipitation (mm) | 197 | 147 | 107 | 42 | 10 | 2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 20 | 23 | 25 | 27 | 28 | 28 |
| Avg temp (°C) | 10 | 13 | 16 | 19 | 21 | 22 |
| Avg low (°C) | 3 | 5 | 8 | 12 | 14 | 16 |
| Precipitation (mm) | 3 | 2 | 6 | 24 | 59 | 138 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 71 | 70 | 62 | 55 | 49 | 48 | 41 | 40 | 43 | 54 | 57 | 65 |
| Relative humidity (%) | 75 | 78 | 79 | 72 | 62 | 51 | 46 | 43 | 45 | 52 | 60 | 67 |
| Wind speed (m/s) | 2.5 | 2.4 | 2.3 | 2.1 | 1.8 | 1.7 | 1.8 | 2.1 | 2.6 | 2.9 | 3.0 | 2.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 71 | 70 | 62 | 55 | 49 | 48 |
| Relative humidity (%) | 75 | 78 | 79 | 72 | 62 | 51 |
| Wind speed (m/s) | 2.5 | 2.4 | 2.3 | 2.1 | 1.8 | 1.7 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 41 | 40 | 43 | 54 | 57 | 65 |
| Relative humidity (%) | 46 | 43 | 45 | 52 | 60 | 67 |
| Wind speed (m/s) | 1.8 | 2.1 | 2.6 | 2.9 | 3.0 | 2.8 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the WMO's CLINO 1991–2020 collection, measured at Salta_aero, about 7 km from the city centre.
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.