Weather in Dumai in September
Dumai, Indonesia averages a high of 30.3°C (86.5°F) and low of 23.7°C (74.7°F) in September, with 25 rain days and 9.6 hours of daily sunshine. Travel score: 66.2/100 (Good). The best time to visit Dumai is February.
High
30°C87°F
Low
24°C75°F
🌧️
25
rain days
☀️
9.6
hrs/day sunshine
💧
88%
humidity
66— Good
September in Dumai is hot and very rainy — pack an umbrella and enjoy indoor attractions too.
What are the average temperatures in Dumai?
How much does it rain in Dumai in September?
Dumai receives an average of 241mm of rainfall across 25 rainy days in September. The annual total is 2779.2mm.
What should I pack for Dumai in September?
Essentials
👟
Comfortable walking shoes
Essential for exploring the city
👕
Light, breathable clothing
Hot weather with highs around 30°C
🧢
Sun hat or cap
Protection from intense sun
🧥
Waterproof jacket
Frequent rain expected (25 rainy days)
☔
Umbrella
Essential for the rainy season
👢
Waterproof shoes
Keep your feet dry in wet conditions
🧴
Sunscreen SPF 30+
10 hours of sunshine daily
🕶️
Sunglasses
Protect your eyes from bright sun
🎉Visiting Indonesia in September?
Don't miss any public holidays — check before you book!
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Data based on 1994–2024 averages · Last updated: 2024-12-31