About Jaen, Cajamarca Department

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 averaged an annual temperature of 75°F, with hottest temperatures reaching 94°F in December and lowest around 62°F in July. The city received approximately 51 inches of precipitation during the year.