About Roseau, Saint George Parish's Climate & Weather History

Roseau, in Saint George Parish, DM, is home to roughly 16,600 people in the America/Dominica time zone at 15.3°N latitude.

In 2025, Roseau recorded an average annual temperature of 79°F. The hottest temperatures reached 90°F in September; the coolest were 70°F in April. Total precipitation for the year was 51 inches, with the wettest month being October.