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San Luis, Argentina climate
Cwa Monsoon-influenced humid subtropical
San Luis has a seasonal mild-temperate climate (Monsoon-influenced humid subtropical, Köppen Cwa). The hottest month is January with an average daily high near 32°C, while the coldest is July averaging around 4°C at night. Precipitation totals about 667 mm a year and is strongly seasonal — January alone averages 115 mm while June barely receives 5 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)San Luis climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 32 | 30 | 28 | 23 | 20 | 17 | 17 | 20 | 22 | 26 | 29 | 31 |
| Avg temp (°C) | 25 | 23 | 21 | 17 | 13 | 10 | 10 | 12 | 15 | 19 | 22 | 24 |
| Avg low (°C) | 18 | 17 | 16 | 12 | 8 | 5 | 4 | 6 | 9 | 13 | 15 | 17 |
| Precipitation (mm) | 115 | 112 | 92 | 45 | 19 | 5 | 5 | 9 | 22 | 50 | 87 | 105 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 32 | 30 | 28 | 23 | 20 | 17 |
| Avg temp (°C) | 25 | 23 | 21 | 17 | 13 | 10 |
| Avg low (°C) | 18 | 17 | 16 | 12 | 8 | 5 |
| Precipitation (mm) | 115 | 112 | 92 | 45 | 19 | 5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 17 | 20 | 22 | 26 | 29 | 31 |
| Avg temp (°C) | 10 | 12 | 15 | 19 | 22 | 24 |
| Avg low (°C) | 4 | 6 | 9 | 13 | 15 | 17 |
| Precipitation (mm) | 5 | 9 | 22 | 50 | 87 | 105 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 47 | 48 | 44 | 47 | 55 | 49 | 50 | 47 | 47 | 48 | 45 | 45 |
| Relative humidity (%) | 51 | 55 | 60 | 65 | 69 | 68 | 64 | 55 | 50 | 49 | 48 | 48 |
| Wind speed (mph) | 6.8 | 6.7 | 6.4 | 6.0 | 5.7 | 5.8 | 6.2 | 7.1 | 7.7 | 8.1 | 7.9 | 7.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 47 | 48 | 44 | 47 | 55 | 49 |
| Relative humidity (%) | 51 | 55 | 60 | 65 | 69 | 68 |
| Wind speed (mph) | 6.8 | 6.7 | 6.4 | 6.0 | 5.7 | 5.8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 50 | 47 | 47 | 48 | 45 | 45 |
| Relative humidity (%) | 64 | 55 | 50 | 49 | 48 | 48 |
| Wind speed (mph) | 6.2 | 7.1 | 7.7 | 8.1 | 7.9 | 7.3 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from the WMO's CLINO 1991–2020 collection, measured at San_luis_aero, about 3 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.