About Costa Rica, Sinaloa's Climate & Weather History

Costa Rica, in Sinaloa, Mexico, is home to roughly 24,900 people in the America/Mazatlan time zone at 24.6°N latitude.

In 2025, Costa Rica recorded an average annual temperature of 78°F. The hottest temperatures reached 105°F in May; the coolest were 45°F in January. Total precipitation for the year was 25 inches, with the wettest month being August.