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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 36°C, while the coldest is January averaging around 7°C at night. Precipitation totals about 1079 mm a year and is strongly seasonal — September alone averages 325 mm while February barely receives 23 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)Santiago climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 21 | 24 | 28 | 31 | 33 | 35 | 36 | 36 | 32 | 29 | 24 | 21 |
| Avg temp (°C) | 14 | 17 | 20 | 24 | 26 | 29 | 29 | 29 | 26 | 23 | 18 | 14 |
| Avg low (°C) | 7 | 9 | 13 | 16 | 20 | 22 | 22 | 22 | 20 | 17 | 12 | 8 |
| Precipitation (mm) | 23 | 23 | 37 | 47 | 72 | 115 | 115 | 138 | 325 | 118 | 38 | 28 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 21 | 24 | 28 | 31 | 33 | 35 |
| Avg temp (°C) | 14 | 17 | 20 | 24 | 26 | 29 |
| Avg low (°C) | 7 | 9 | 13 | 16 | 20 | 22 |
| Precipitation (mm) | 23 | 23 | 37 | 47 | 72 | 115 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 36 | 36 | 32 | 29 | 24 | 21 |
| Avg temp (°C) | 29 | 29 | 26 | 23 | 18 | 14 |
| Avg low (°C) | 22 | 22 | 20 | 17 | 12 | 8 |
| Precipitation (mm) | 115 | 138 | 325 | 118 | 38 | 28 |
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 (m/s) | 2.0 | 2.2 | 2.5 | 2.6 | 2.7 | 2.8 | 2.9 | 2.5 | 2.1 | 2.0 | 1.9 | 1.9 |
| 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 (m/s) | 2.0 | 2.2 | 2.5 | 2.6 | 2.7 | 2.8 |
| 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 (m/s) | 2.9 | 2.5 | 2.1 | 2.0 | 1.9 | 1.9 |
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.