About Trevani, Koungou's Climate & Weather History

With a population of around 4,000, Trevani sits in Koungou, YT. The city operates in the Indian/Mayotte time zone.

In 2025, Trevani recorded an average annual temperature of 79°F. The hottest temperatures reached 91°F in December; the coolest were 68°F in September. Total precipitation for the year was 37 inches, with the wettest month being March.