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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 89°F, while the coldest is July averaging around 39°F at night. Precipitation totals about 26 inches a year and is strongly seasonal — January alone averages 4.5 inches while June barely receives 0.21 inches.
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 (°F) | 89 | 86 | 82 | 74 | 67 | 63 | 62 | 67 | 72 | 78 | 83 | 87 |
| Avg temp (°F) | 77 | 74 | 70 | 62 | 56 | 51 | 49 | 54 | 60 | 66 | 71 | 75 |
| Avg low (°F) | 65 | 63 | 60 | 53 | 47 | 41 | 39 | 43 | 48 | 55 | 59 | 63 |
| Precipitation (in) | 4.5 | 4.4 | 3.6 | 1.8 | 0.7 | 0.2 | 0.2 | 0.3 | 0.9 | 2.0 | 3.4 | 4.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 89 | 86 | 82 | 74 | 67 | 63 |
| Avg temp (°F) | 77 | 74 | 70 | 62 | 56 | 51 |
| Avg low (°F) | 65 | 63 | 60 | 53 | 47 | 41 |
| Precipitation (in) | 4.5 | 4.4 | 3.6 | 1.8 | 0.7 | 0.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 62 | 67 | 72 | 78 | 83 | 87 |
| Avg temp (°F) | 49 | 54 | 60 | 66 | 71 | 75 |
| Avg low (°F) | 39 | 43 | 48 | 55 | 59 | 63 |
| Precipitation (in) | 0.2 | 0.3 | 0.9 | 2.0 | 3.4 | 4.1 |
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.