T his region is dominantly characterized by the sea climate with average temperature of 30°C at day and 23°C at night throughout the year. Rainy season falls on November (sometimes October) up to April while dry season begins in July.

Riau has tropical climate and in general is classified into climate type "A" (Schmidt and Ferguson) with relatively high rainfall, ranging from 2,000 to 3,000 mm per year in average.