About Santa Rosalia, Baja California Sur's Climate & Weather History

With a population of around 11,800, Santa Rosalia sits in Baja California Sur, Mexico. The city operates in the America/Mazatlan time zone.

In 2025, Santa Rosalia recorded an average annual temperature of 77°F. The hottest temperatures reached 104°F in June; the coolest were 46°F in January. Total precipitation for the year was 5 inches, with the wettest month being September.