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.
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- Sun hours / year
- 1,848
- Sunniest month
- February
- Peak score
- 65/100
- Rain / year
- 2,591 mm
- Midday UV at peak
- 10 (very high)
- Population
- 349k
- Elevation
- 15 m

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 |
See Dumai on the interactive sunshine globe →
Nearby places for sunshine
- Pekanbaru Indonesia · 128 km · best in Jan · 1,944 h sun/yr
- Kuala Lumpur Malaysia · 130 km · best in Feb · 2,124 h sun/yr
- Subang Malaysia · 170 km · best in Jan · 2,038 h sun/yr
- Johor Bahru Malaysia · 249 km · best in Feb · 1,839 h sun/yr
- Singapore Singapore · 286 km · best in Feb · 1,839 h sun/yr
- Padang (Katapiang) Indonesia · 296 km · best in Jan · 1,936 h sun/yr
Nearest destinations
- Malacca Malaysia · 117 km · 2,008 h sun/yr · best in Feb
- Seletar Singapore · 271 km · 1,839 h sun/yr · best in Feb
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