Indonesia weather in September 2025

The temperatures in Indonesia during September are extremely high, between 27°C and hot as 31°C, drinking water regularly is advisable.

You can expect about 3 to 8 days of rain in Indonesia during the month of September. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.

Our weather forecast can give you a great sense of what weather to expect in Indonesia in September 2025.

If you’re planning to visit Indonesia in the near future, we highly recommend that you review the 14 day weather forecast for Indonesia before you arrive.

Temperatures

31° / 27°

Rainy Days

Snowy Days

Dry Days

Rainfall

124

Sun Hours

11.6

Hrs

Sun	Mon	Tue	Wed	Thu	Fri	Sat
	1 33° /25°	2 34° /25°	3 33° /26°	4 34° /26°	5 34° /26°	6 34° /26°
7 34° /26°	8 33° /26°	9 33° /25°	10 32° /25°	11 33° /25°	12 33° /25°	13 31° /25°
14 31° /25°	15 33° /26°	16 34° /26°	17 33° /26°	18 34° /26°	19 34° /26°	20 32° /26°
21 33° /26°	22 34° /27°	23 32° /26°	24 32° /26°	25 33° /26°	26 33° /26°	27 33° /26°
28 33° /26°	29 34° /26°	30 33° /27°

Explore the weather in Indonesia in other months

Indonesia annual weather

Month	Temperatures	Rainy Days	Dry Days	Rainfall	Weather	More details
January	30° / 27°	11	20	257 mm	Ok	Indonesia in January
February	30° / 26°	13	16	316 mm	Ok	Indonesia in February
March	31° / 27°	13	18	261 mm	Ok	Indonesia in March
April	31° / 27°	13	17	259 mm	Ok	Indonesia in April
May	32° / 27°	10	21	193 mm	Ok	Indonesia in May
June	31° / 27°	8	22	181 mm	Ok	Indonesia in June
July	31° / 26°	6	25	133 mm	Good	Indonesia in July
August	31° / 26°	5	26	110 mm	Good	Indonesia in August
September	31° / 27°	6	24	124 mm	Good	Indonesia in September
October	32° / 27°	11	20	197 mm	Ok	Indonesia in October
November	31° / 27°	11	19	230 mm	Ok	Indonesia in November
December	31° / 27°	11	20	219 mm	Ok	Indonesia in December