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Dumai Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Dumai.
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Climate overview of Dumai
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 December 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.
Dumai Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Dumai - and find the best time to visit.
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 December, 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 December.
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. For more details, please visit our Dumai Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Dumai
No single month stands out for weather in Dumai, as conditions remain fairly consistent throughout the year.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
very wet
Feb
wet
Mar
very wet
Apr
very wet
May
very wet
Jun
very hot
Jul
wet
Aug
very wet
Sep
very wet
Oct
very wet
Nov
very wet
Dec
very wet
- Warmest weather: February, March, April, May, June, July, August, September, October and November
Frequently asked questions about the climate in Dumai
What temperatures can I expect in Dumai?
Daytime highs range from 32°C (90°F) in December to 34°C (93°F) in May. Nighttime lows range from 24°C (75°F) to 25°C (77°F). Temperatures stay relatively stable year-round.
How much rain does Dumai get?
Annual rainfall is around 2917 mm (115 in). November is the wettest month with 384 mm (15 in), while February is the driest with 151 mm (5.9 in).
Dumai 3-Day Forecast
Dumai on the map
Dumai is highlighted - select any city to see its climate.
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