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Mazatlán, Sinaloa climate
BSh Hot semi-arid
Mazatlán has a mildly seasonal tropical climate (Hot semi-arid, Köppen BSh). The hottest month is June with an average daily high near 37°C, while the coldest is January averaging around 12°C at night. Precipitation totals about 701 mm a year and is strongly seasonal — August alone averages 214 mm while May 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)Mazatlán climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 32 | 33 | 35 | 36 | 37 | 36 | 35 | 35 | 35 | 34 | 31 |
| Avg temp (°C) | 22 | 22 | 23 | 24 | 27 | 30 | 30 | 29 | 29 | 29 | 26 | 22 |
| Avg low (°C) | 12 | 12 | 12 | 14 | 18 | 23 | 24 | 23 | 23 | 22 | 17 | 13 |
| Precipitation (mm) | 15 | 10 | 3 | 1 | 0 | 34 | 153 | 214 | 176 | 48 | 34 | 13 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 32 | 33 | 35 | 36 | 37 |
| Avg temp (°C) | 22 | 22 | 23 | 24 | 27 | 30 |
| Avg low (°C) | 12 | 12 | 12 | 14 | 18 | 23 |
| Precipitation (mm) | 15 | 10 | 3 | 1 | 0 | 34 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 36 | 35 | 35 | 35 | 34 | 31 |
| Avg temp (°C) | 30 | 29 | 29 | 29 | 26 | 22 |
| Avg low (°C) | 24 | 23 | 23 | 22 | 17 | 13 |
| Precipitation (mm) | 153 | 214 | 176 | 48 | 34 | 13 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 42 | 37 | 33 | 33 | 23 | 41 | 68 | 68 | 63 | 34 | 31 | 43 |
| Relative humidity (%) | 50 | 49 | 45 | 44 | 48 | 62 | 77 | 83 | 85 | 74 | 62 | 56 |
| Wind speed (km/h) | 4.8 | 4.9 | 5.2 | 5.5 | 6.0 | 6.5 | 5.0 | 4.5 | 4.4 | 4.3 | 4.5 | 4.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 42 | 37 | 33 | 33 | 23 | 41 |
| Relative humidity (%) | 50 | 49 | 45 | 44 | 48 | 62 |
| Wind speed (km/h) | 4.8 | 4.9 | 5.2 | 5.5 | 6.0 | 6.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 68 | 68 | 63 | 34 | 31 | 43 |
| Relative humidity (%) | 77 | 83 | 85 | 74 | 62 | 56 |
| Wind speed (km/h) | 5.0 | 4.5 | 4.4 | 4.3 | 4.5 | 4.5 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from CONAGUA / SMN, Mexico's national weather service, measured at Siqueros, about 23 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.