Bali weather in September 2025

Expect daytime maximum temperatures of 30°C in Bali, Indonesia in September and high heat and humidity based on long-term weather averages. There are 10 hours of sunshine per day on average with typically 116 mm of rainfall in the month.

  • 30°C maximum daytime temperature in September in Bali (Denpasar)30
    30°C max day temperature
  • 10 hours of sunshine per day
  • 1 day with some rainfall in September in Bali (Denpasar)1
    1 day with some rainfall
  • 23°C minimum night-time temperature in September in Bali (Denpasar)23
    23°C min night temperature
  • 12 hours of daylight per day in September in Bali (Denpasar)12
    12 hours of daylight per day
  • High heat & humidity in September in Bali (Denpasar)H
    High heat & humidity
  • 116 mm monthly rainfall in September in Bali (Denpasar)116
    116 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Bali (Denpasar)11
    11+ (Extreme) UV index
  • 26°C sea temperature in September in Bali (Denpasar)26
    26°C sea temperature

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The September weather guide for Bali (Denpasar) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Top Bali destinations

Below are average maximum temperatures at popular countries, regions and places in Bali in September. Select a holiday destination to see more weather parameters.

All Bali destinations

Metric (°C / mm)  |  Imperial (°F / inches)

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More about Bali

How hot is it in Bali in September?

Daytime temperatures usually reach 30°C in Denpasar, Bali in September with high heat and humidity, falling to 23°C at night.

How sunny is it in Bali in September?

There are normally 10 hours of bright sunshine each day in Denpasar, Bali in September - that's 84% of daylight hours.

How warm is the sea around Bali in September?

The average sea temperature around Denpasar, Bali in September is 26°C.

Does it ever rain in Bali in September?

There is usually 1 day with some rain in Denpasar, Bali in September and the average monthly rainfall is 116mm.

Bali September sunrise & sunset times

Browse the sunrise and sunset times for Bali in September 2025. Select a month to view Bali sunrise and sunset times for the next 12 months. The Bali sunrise and sunset times shown below are for Denpasar.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:21 18:17
Monday, 15th September 2025 06:13 18:16
Tuesday, 30th September 2025 06:04 18:14

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