Weather in Indonesia in September
September in Indonesia is a hot month. Plan the serious walking for morning. The rest of the day wants shade and a slower pace.
A country pin in September is a warning: one region of Indonesia will not match another. Use a city page if you already know where you are going. Compared with May and February, September sits in the middle of Indonesia's year.
- Average temp
- 28°C
25–32°C
- Rainfall
- 60 mm
Showers likely
- Sunshine
- 7.7 h
hours per day
What to expect
Daytime
Hot days in Indonesia. Ruins, markets and hills are a morning job. Midday sightseeing is how people remember September for the wrong reason.
Nights stay warm. Air-con, if you can get it, is part of the brief. A jumper for September in Indonesia is almost always a waste of bag space.
Rain
September is on the drier side of the year in Indonesia. Showers are possible. They do not define the month.
A shell that lives in the bag is enough. This is not June, and it should not be packed as if it were.
Evening
Evenings stay warm.
What to pack
Sun protection
Rain jacket
Where to stay in Indonesia
Featured stays on trip1. Dates are a starting point for September.
Travel guides for Indonesia
What to read before you book.
Average weather in Indonesia
TemperatureRainfall
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FAQs about Indonesia
Climate averages for Indonesia, 1991–2020.
The best time to visit Indonesia is between June and September, the most comfortable stretch of the year on these averages.
October is the hottest month, with an average around 29°C.
January is the wettest month, with about 238 mm of rain.
No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.
