Climate almanac
Dumai
Riau, Indonesia · 1.67°, 101.44°
What is the climate like in Dumai?
The best time to visit Dumai is typically February, the year's most comfortable month (5.4/10). Dumai is warmest in May, when daily highs average 91°F (33°C), and coolest in September, when lows fall to about 76°F (24°C). The wettest month is typically December and the driest is July; the year sees roughly 116 in (2957 mm) of precipitation.
- Best time to visitFebruary — the year's comfort peak (5.4/10)
- Warmest monthMay — average high 91°F (33°C)
- Coolest monthSeptember — average low 76°F (24°C)
- Wettest monthDecember (15 in (376 mm))
- Driest monthJuly (5.8 in (146 mm))
- Annual precipitation116 in (2957 mm)
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)