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Dumai Weather & Climate: Best Time to Visit

Dumai, Sumatra, Indonesia, enjoys a steady climate throughout the year, with daytime temperatures typically around 33°C (91°F). May is the warmest month at 34°C (93°F), while September is the coolest at 32°C (90°F).

With around 2917 mm (115 in) of annual rainfall, Dumai has a notably wet climate. The wettest month is November.

Monthly Temperature in Dumai

The temperature in Dumai remains steady throughout the year, providing a consistently very warm climate. Average daytime temperatures reach a very warm 34°C (93°F) in May. In September, the coolest month of the year, temperatures drop to a very warm 32°C (90°F).

At night, temperatures range from around 25°C (77°F) in May to 24°C (75°F) in September.

Check out our detailed temperature page for more information.

Temperature ranges by month

Rainfall in Dumai

Dumai has a relatively rainy climate with high precipitation levels, averaging 2917 mm (115 in) of rainfall annually. Dumai can be quite wet during November, receiving approximately 384 mm (15 in) of precipitation over 23 rainy days.

In contrast, during the driest month (February), you will experience much drier conditions, with 151 mm (5.9 in) of precipitation spread across 13 rainy days days. For more details, please visit our Dumai Precipitation page.

The mean monthly precipitation over the year, including rain, hail, and snow

Dumai 3-Day Forecast

Select a Month

Check the conditions for any month of the year.

Best Time to Visit Dumai

Dumai has warm weather with temperatures ranging from 32°C (90°F) to 34°C (93°F) throughout the year. The best time to visit is during February, when rainfall is at its lowest, making it a great time for sightseeing and exploring all the place has to offer.

For a more comfortable experience, start your day early when the weather is cooler, or take advantage of the gentle breezes in the late afternoon.

Ready to plan your travels but need destination ideas? Our smart tool recommends places based on the climate conditions you prefer. Start planning with our destination weather tool.