Rosarito, where it's located

The climate of Playas de Rosarito is arid sub-tropical, with very mild, relatively rainy winters and warm, sunny summers.
The city is located on the Pacific coast, south of Tijuana. Here, as in southern California and Baja California, a cold sea current makes the climate particularly mild and arid.
Occasionally, from June to October, but with a higher probability in September, the city may be affected by the remnants of a hurricane coming from the Pacific to the west of Mexico. Typically, the main effects are heavy rainfall or scattered thunderstorms.
The average temperature of the coldest months (January, February, March) is of 14.5 °C (58 °F), that of the warmest month (August) is of 21 °C (70 °F). Here are the average temperatures.
Rosarito - Average temperatures
Min (°C)101010111314161716151210
Max (°C)191919202122232524232120
Min (°F)505050525557616361595450
Max (°F)666666687072737775737068

Precipitation amounts to 260 millimeters (10.2 inches) per year: it is therefore scarce. It ranges from 0 mm (0 in) in the driest month (July) to 57 mm (2.2 in) in the wettest (March). Here is the average precipitation.
Rosarito - Average precipitation

The sea temperature ranges between 15 °C (59 °F) and 20 °C (68 °F). Therefore, the sea is quite cold even in summer. Here are the average sea temperatures.
Rosarito - Sea temperature
Temp (°C)151515151617192020191816
Temp (°F)595959596163666868666461


Best Time

Having a great climate, Rosarito can be visited all year round. However, from December to March, it can rain, and it can get a bit cold at night, especially in inland areas. In May and June, there may be morning mists. In summer, but especially in September and October, there can be very hot days, when the wind blows from the desert.
The best time to go to the beach is from July to October, when the sea is less cold.