About Jaen, Cajamarca Department's Climate & Weather History

Jaen is a city of approximately 52,500 people in Cajamarca Department, Peru. Located in the America/Lima time zone at 5.7°S latitude.

In 2025, Jaen recorded an average annual temperature of 75°F. The hottest temperatures reached 94°F in December; the coolest were 62°F in July. Total precipitation for the year was 51 inches, with the wettest month being March.