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Rosarito, Baja California climate
BSh Hot semi-arid
Rosarito has a mildly seasonal warm-temperate climate (Hot semi-arid, Köppen BSh). The hottest month is August with an average daily high near 30°C, while the coldest is December averaging around 8°C at night. Precipitation totals about 261 mm a year and is strongly seasonal — February alone averages 64 mm while June barely receives 1 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)Rosarito climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 21 | 21 | 22 | 24 | 25 | 27 | 29 | 30 | 30 | 27 | 24 | 20 |
| Avg temp (°C) | 15 | 15 | 16 | 17 | 19 | 21 | 23 | 24 | 23 | 21 | 17 | 14 |
| Avg low (°C) | 8 | 9 | 9 | 11 | 13 | 15 | 17 | 18 | 17 | 14 | 11 | 8 |
| Precipitation (mm) | 52 | 64 | 39 | 17 | 7 | 1 | 1 | 1 | 4 | 13 | 18 | 45 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 21 | 21 | 22 | 24 | 25 | 27 |
| Avg temp (°C) | 15 | 15 | 16 | 17 | 19 | 21 |
| Avg low (°C) | 8 | 9 | 9 | 11 | 13 | 15 |
| Precipitation (mm) | 52 | 64 | 39 | 17 | 7 | 1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 30 | 30 | 27 | 24 | 20 |
| Avg temp (°C) | 23 | 24 | 23 | 21 | 17 | 14 |
| Avg low (°C) | 17 | 18 | 17 | 14 | 11 | 8 |
| Precipitation (mm) | 1 | 1 | 4 | 13 | 18 | 45 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 41 | 46 | 42 | 37 | 35 | 25 | 28 | 24 | 23 | 28 | 33 | 41 |
| Relative humidity (%) | 65 | 68 | 69 | 67 | 68 | 64 | 59 | 56 | 58 | 60 | 59 | 63 |
| Wind speed (km/h) | 9.0 | 9.2 | 8.6 | 9.1 | 8.9 | 8.1 | 7.5 | 7.1 | 6.9 | 7.4 | 8.2 | 9.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 41 | 46 | 42 | 37 | 35 | 25 |
| Relative humidity (%) | 65 | 68 | 69 | 67 | 68 | 64 |
| Wind speed (km/h) | 9.0 | 9.2 | 8.6 | 9.1 | 8.9 | 8.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 28 | 24 | 23 | 28 | 33 | 41 |
| Relative humidity (%) | 59 | 56 | 58 | 60 | 59 | 63 |
| Wind speed (km/h) | 7.5 | 7.1 | 6.9 | 7.4 | 8.2 | 9.2 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from CONAGUA / SMN, Mexico's national weather service, measured at Presa Rodriguez, 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.