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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 86°F, while the coldest is December averaging around 46°F at night. Precipitation totals about 10 inches a year and is strongly seasonal — February alone averages 2.5 inches while June barely receives 0.02 inches.
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 (°F) | 69 | 69 | 71 | 74 | 76 | 80 | 85 | 86 | 85 | 81 | 75 | 69 |
| Avg temp (°F) | 58 | 58 | 60 | 63 | 66 | 70 | 74 | 76 | 74 | 69 | 63 | 58 |
| Avg low (°F) | 47 | 47 | 49 | 51 | 56 | 59 | 63 | 65 | 63 | 58 | 51 | 46 |
| Precipitation (in) | 2.0 | 2.5 | 1.5 | 0.7 | 0.3 | 0.0 | 0.1 | 0.0 | 0.1 | 0.5 | 0.7 | 1.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 69 | 69 | 71 | 74 | 76 | 80 |
| Avg temp (°F) | 58 | 58 | 60 | 63 | 66 | 70 |
| Avg low (°F) | 47 | 47 | 49 | 51 | 56 | 59 |
| Precipitation (in) | 2.0 | 2.5 | 1.5 | 0.7 | 0.3 | 0.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 85 | 86 | 85 | 81 | 75 | 69 |
| Avg temp (°F) | 74 | 76 | 74 | 69 | 63 | 58 |
| Avg low (°F) | 63 | 65 | 63 | 58 | 51 | 46 |
| Precipitation (in) | 0.1 | 0.0 | 0.1 | 0.5 | 0.7 | 1.8 |
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 (mph) | 5.6 | 5.7 | 5.3 | 5.7 | 5.5 | 5.0 | 4.7 | 4.4 | 4.3 | 4.6 | 5.1 | 5.7 |
| 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 (mph) | 5.6 | 5.7 | 5.3 | 5.7 | 5.5 | 5.0 |
| 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 (mph) | 4.7 | 4.4 | 4.3 | 4.6 | 5.1 | 5.7 |
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.