When to go · Dumai
Dumai in September
Great month. Inside Dumai's best window: Feb–Sep (drier); avoid the Dec–Jan rain peak.
Key facts
- Verdict
- Great
- Temperature
- 32°C (90°F)90°F (32°C) / 23°C (73°F)73°F (23°C)
- average high / low
- Rain days
- 13
- Crowds
- Medium
- Indonesia overall
- Prices
- Medium
- Indonesia overall
Verdict
Inside Dumai's best window: Feb–Sep (drier); avoid the Dec–Jan rain peak.
Is another month better than September?
No other month rates higher than September for Dumai in this guide.
Weather in September
- DumaiHighs around 32 °C (90 °F), lows around 23 °C (73 °F), rain on about 13 daysHighs around 90 °F (32 °C), lows around 73 °F (23 °C), rain on about 13 days
Crowds and prices
- Crowds · Indonesia overall
- Medium
- Prices · Indonesia overall
- Medium
Indonesia overall: Dry, fewer crowds; the sweet spot.
Compare two months
Weather, crowds and prices for any two months in Dumai, side by side.
Verdict
Sep: Great
Jan: Great
Daytime high
Sep: 32 °C (90 °F)90 °F (32 °C)
Jan: 31 °C (88 °F)88 °F (31 °C)
Night low
Sep: 23 °C (73 °F)73 °F (23 °C)
Jan: 23 °C (73 °F)73 °F (23 °C)
Rain days
Sep: 13 (better)
Jan: 14
Crowds
Sep: Medium
Jan: Medium
Prices
Sep: Medium
Jan: Medium
Festivals listed
Sep: 0
Jan: 0
September: Inside Dumai's best window: Feb–Sep (drier); avoid the Dec–Jan rain peak.
January: Inside Dumai's best window: Feb–Sep (drier); avoid the Dec–Jan rain peak.
Dumai: figures are long-term averages from this guide, not a forecast.
What to pack
- Light, breathable clothes, a sun hat and sunscreen
- A rain jacket or umbrella and shoes that dry fast