About Mount Hagen, Western Highlands Province's Climate & Weather History

With a population of around 33,600, Mount Hagen sits in Western Highlands Province, Papua New Guinea. The city operates in the Pacific/Port Moresby time zone.

In 2025, Mount Hagen recorded an average annual temperature of 64°F. The hottest temperatures reached 79°F in October; the coolest were 52°F in September. Total precipitation for the year was 93 inches, with the wettest month being March.