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Mexicali, Baja California climate
BWh Hot desert
Mexicali has a seasonal tropical climate (Hot desert, Köppen BWh). The hottest month is July with an average daily high near 43°C, while the coldest is December averaging around 7°C at night. Precipitation totals about 70 mm a year and is strongly seasonal — January alone averages 12 mm while June barely receives 0 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)Mexicali climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 21 | 23 | 27 | 31 | 36 | 41 | 43 | 43 | 40 | 33 | 26 | 20 |
| Avg temp (°C) | 14 | 16 | 20 | 23 | 27 | 32 | 35 | 35 | 32 | 25 | 19 | 14 |
| Avg low (°C) | 8 | 9 | 12 | 15 | 19 | 23 | 27 | 27 | 24 | 18 | 12 | 7 |
| Precipitation (mm) | 12 | 8 | 6 | 2 | 1 | 0 | 5 | 8 | 7 | 6 | 5 | 10 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 21 | 23 | 27 | 31 | 36 | 41 |
| Avg temp (°C) | 14 | 16 | 20 | 23 | 27 | 32 |
| Avg low (°C) | 8 | 9 | 12 | 15 | 19 | 23 |
| Precipitation (mm) | 12 | 8 | 6 | 2 | 1 | 0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 43 | 43 | 40 | 33 | 26 | 20 |
| Avg temp (°C) | 35 | 35 | 32 | 25 | 19 | 14 |
| Avg low (°C) | 27 | 27 | 24 | 18 | 12 | 7 |
| Precipitation (mm) | 5 | 8 | 7 | 6 | 5 | 10 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 39 | 39 | 32 | 26 | 23 | 17 | 28 | 26 | 23 | 23 | 32 | 39 |
| Relative humidity (%) | 46 | 46 | 41 | 35 | 30 | 22 | 23 | 25 | 27 | 30 | 36 | 44 |
| Wind speed (mph) | 4.2 | 4.6 | 5.3 | 6.5 | 6.7 | 6.5 | 5.8 | 5.5 | 5.4 | 5.2 | 4.5 | 4.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 39 | 39 | 32 | 26 | 23 | 17 |
| Relative humidity (%) | 46 | 46 | 41 | 35 | 30 | 22 |
| Wind speed (mph) | 4.2 | 4.6 | 5.3 | 6.5 | 6.7 | 6.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 28 | 26 | 23 | 23 | 32 | 39 |
| Relative humidity (%) | 23 | 25 | 27 | 30 | 36 | 44 |
| Wind speed (mph) | 5.8 | 5.5 | 5.4 | 5.2 | 4.5 | 4.2 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from CONAGUA / SMN, Mexico's national weather service, measured at Mexicali (smn), about 9 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.