Transit Desk

Climate

Weather in Indonesia in September

Weather in Indonesia, September
In September, Indonesia sees average highs of 32.8°C (91°F) and lows of 23.6°C (74°F), with around 133 mm of rain. It is one of the best months to visit.

Indonesia — September

Indonesia September
Daytime high
32.8°C (91°F)
Overnight low
23.6°C (74°F)
Rainfall
133 mm
Best-time rank
Recommended month

How September compares

Indonesia, September vs. the annual average (2025)
This month32.8°C (91°F) / 23.6°C (74°F) · 133 mm
Yearly average31.6°C (89°F) / 23.8°C (75°F) · 207 mm

September in Indonesia runs 1.2°C (2.2°F) warmer than the yearly average, and is drier than the yearly average. Pack light, breathable clothing — expect it to be hot, and something waterproof — this is a wetter month.

Common questions

What is the weather like in Indonesia in September?

Average highs of 32.8°C (91°F) and lows of 23.6°C (74°F), with around 133 mm of rain.

Is September a good time to visit Indonesia?

Yes — September is one of the more comfortable months in Indonesia, based on temperature and rainfall.

Updated climate normals, 2025