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Santiago, Nuevo León climate
Cwa Monsoon-influenced humid subtropical
Santiago has a seasonal warm-temperate climate (Monsoon-influenced humid subtropical, Köppen Cwa). The hottest month is August with an average daily high near 97°F, while the coldest is January averaging around 45°F at night. Precipitation totals about 42 inches a year and is strongly seasonal — September alone averages 12.8 inches while February barely receives 0.91 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)Santiago climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 70 | 75 | 82 | 88 | 91 | 96 | 96 | 97 | 89 | 83 | 75 | 70 |
| Avg temp (°F) | 57 | 62 | 68 | 74 | 80 | 83 | 84 | 84 | 79 | 73 | 64 | 58 |
| Avg low (°F) | 45 | 48 | 55 | 61 | 68 | 71 | 72 | 72 | 69 | 62 | 53 | 46 |
| Precipitation (in) | 0.9 | 0.9 | 1.5 | 1.8 | 2.8 | 4.5 | 4.5 | 5.4 | 12.8 | 4.7 | 1.5 | 1.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 70 | 75 | 82 | 88 | 91 | 96 |
| Avg temp (°F) | 57 | 62 | 68 | 74 | 80 | 83 |
| Avg low (°F) | 45 | 48 | 55 | 61 | 68 | 71 |
| Precipitation (in) | 0.9 | 0.9 | 1.5 | 1.8 | 2.8 | 4.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 96 | 97 | 89 | 83 | 75 | 70 |
| Avg temp (°F) | 84 | 84 | 79 | 73 | 64 | 58 |
| Avg low (°F) | 72 | 72 | 69 | 62 | 53 | 46 |
| Precipitation (in) | 4.5 | 5.4 | 12.8 | 4.7 | 1.5 | 1.1 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 49 | 47 | 47 | 49 | 49 | 47 | 49 | 46 | 53 | 41 | 40 | 47 |
| Relative humidity (%) | 57 | 54 | 51 | 48 | 54 | 57 | 58 | 59 | 69 | 67 | 63 | 59 |
| Wind speed (mph) | 4.4 | 4.9 | 5.5 | 5.9 | 6.0 | 6.3 | 6.4 | 5.6 | 4.6 | 4.4 | 4.3 | 4.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 49 | 47 | 47 | 49 | 49 | 47 |
| Relative humidity (%) | 57 | 54 | 51 | 48 | 54 | 57 |
| Wind speed (mph) | 4.4 | 4.9 | 5.5 | 5.9 | 6.0 | 6.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 49 | 46 | 53 | 41 | 40 | 47 |
| Relative humidity (%) | 58 | 59 | 69 | 67 | 63 | 59 |
| Wind speed (mph) | 6.4 | 5.6 | 4.6 | 4.4 | 4.3 | 4.2 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from CONAGUA / SMN, Mexico's national weather service, measured at La Boca, about 2 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.