Dumai weather by month & the best time to visit
Indonesia · regional city · tropical rainforest climate
The best time to visit Dumai is February — its sunniest month (Sunshine Score 65/100), with January and March close behind. Dumai averages about 1,848 hours of sunshine a year. Daytime highs around 29°C / 84°F and roughly 132 mm of rain in February.
When is the best time to visit Dumai?
For sunshine, the best time to visit Dumai is February, then January and March. The dullest month is January (62/100, 190 mm of rain). The full month-by-month picture is in the table below.
How sunny is Dumai?
Dumai gets a moderate 1,848 hours of sunshine a year. Conditions barely change through the year — only 3 Sunshine Score points separate February from January. It ranks #116 of 119 destinations in Indonesia for annual sunshine, below the national median of 2,183 hours. The year's 2,591 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 62 | 28° / 82°F | 23° / 73°F | 190 mm | 9 |
| February | 65 | 29° / 84°F | 23° / 73°F | 132 mm | 9 |
| March | 62 | 29° / 84°F | 24° / 75°F | 225 mm | 10 |
| April | 62 | 29° / 84°F | 24° / 75°F | 254 mm | 10 |
| May | 62 | 29° / 84°F | 24° / 75°F | 197 mm | 9 |
| June | 62 | 29° / 84°F | 24° / 75°F | 171 mm | 8 |
| July | 62 | 29° / 84°F | 23° / 73°F | 177 mm | 9 |
| August | 62 | 29° / 84°F | 23° / 73°F | 197 mm | 9 |
| September | 62 | 29° / 84°F | 23° / 73°F | 210 mm | 9 |
| October | 62 | 29° / 84°F | 23° / 73°F | 266 mm | 8 |
| November | 62 | 28° / 82°F | 24° / 75°F | 306 mm | 8 |
| December | 62 | 28° / 82°F | 23° / 73°F | 266 mm | 8 |
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Dumai: questions and answers
What kind of destination is Dumai?
Dumai is a regional city in Indonesia with a tropical rainforest climate.
How many hours of sunshine does Dumai get a year?
Dumai gets about 1,848 hours of sunshine a year, at its best around February.
When is the best time to visit Dumai?
The sunniest time to visit Dumai is February, when the Sunshine Score peaks at 65/100 (with January and March close behind). Expect daytime highs around 29°C / 84°F.
What is the least sunny month in Dumai?
January is the least sunny month in Dumai, scoring 62/100 with about 190 mm of rain.
How strong is the sun in Dumai?
The typical midday UV index in Dumai peaks around 10 (very high) in March, easing to about 8 (very high) in June. Month-by-month midday UV values are in the UV column of the table on this page.
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