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Guanajuato, Guanajuato climate
Cwa Monsoon-influenced humid subtropical
Guanajuato has a mildly seasonal warm-temperate climate (Monsoon-influenced humid subtropical, Köppen Cwa). The hottest month is May with an average daily high near 32°C, while the coldest is January averaging around 5°C at night. Precipitation totals about 682 mm a year and is strongly seasonal — July alone averages 173 mm while December 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)Guanajuato climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 24 | 26 | 29 | 31 | 32 | 30 | 27 | 27 | 27 | 27 | 26 | 25 |
| Avg temp (°C) | 15 | 16 | 18 | 21 | 23 | 23 | 21 | 21 | 20 | 19 | 17 | 15 |
| Avg low (°C) | 5 | 6 | 8 | 10 | 13 | 15 | 14 | 14 | 14 | 11 | 8 | 5 |
| Precipitation (mm) | 13 | 15 | 8 | 7 | 31 | 129 | 173 | 145 | 108 | 39 | 10 | 5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 24 | 26 | 29 | 31 | 32 | 30 |
| Avg temp (°C) | 15 | 16 | 18 | 21 | 23 | 23 |
| Avg low (°C) | 5 | 6 | 8 | 10 | 13 | 15 |
| Precipitation (mm) | 13 | 15 | 8 | 7 | 31 | 129 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 27 | 27 | 27 | 27 | 26 | 25 |
| Avg temp (°C) | 21 | 21 | 20 | 19 | 17 | 15 |
| Avg low (°C) | 14 | 14 | 14 | 11 | 8 | 5 |
| Precipitation (mm) | 173 | 145 | 108 | 39 | 10 | 5 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 35 | 29 | 27 | 34 | 41 | 61 | 67 | 62 | 63 | 44 | 30 | 33 |
| Relative humidity (%) | 58 | 52 | 44 | 39 | 44 | 59 | 69 | 71 | 73 | 69 | 66 | 62 |
| Wind speed (mph) | 5.4 | 5.5 | 5.8 | 5.9 | 5.6 | 6.4 | 6.2 | 6.3 | 6.4 | 6.0 | 5.7 | 5.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 35 | 29 | 27 | 34 | 41 | 61 |
| Relative humidity (%) | 58 | 52 | 44 | 39 | 44 | 59 |
| Wind speed (mph) | 5.4 | 5.5 | 5.8 | 5.9 | 5.6 | 6.4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 67 | 62 | 63 | 44 | 30 | 33 |
| Relative humidity (%) | 69 | 71 | 73 | 69 | 66 | 62 |
| Wind speed (mph) | 6.2 | 6.3 | 6.4 | 6.0 | 5.7 | 5.2 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from CONAGUA / SMN, Mexico's national weather service, measured at El Chapin, about 16 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.