When to go · September

Indonesia in September

Excellent time to go

Ideal window for Komodo boat trips departing Bali; seas remain calm through mid-October.

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Daytime high

30°C

86°F

Overnight low

23°C

73°F

Rainfall

50 mm

moderate

Crowd levels

high

busy

Prices

high

peak rates

What to expect in Indonesia in September

September brings hot weather to Indonesia, with daytime highs around 30°C (86°F) and overnight lows near 23°C (73°F). Skies are typically dry with occasional showers, with about 50 mm of rainfall on average. Ideal window for Komodo boat trips departing Bali; seas remain calm through mid-October..

September is one of Indonesia's busiest months, so book accommodation early and expect queues at the headline sights. Flights and hotels are at peak rates, so use our tracker below to spot any drops. Peak season runs July–August, December, for context.

What’s happening in September

🎉
Ubud Village Jazz Festival · SepTwo-day international jazz gathering hosted at ARMA Museum drawing artists from across Asia, Europe and the Americas. Open-air stages, workshops and jam sessions run in Ubud's rice-terrace setting.

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