Seminyak weather in September 2025

Expect 30°C daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Seminyak in September. Check more long-term weather averages for Seminyak in September before you book your next holiday to Bali in 2025/2026.

  • 30°C maximum daytime temperature in September in Seminyak30
    30°C max day temperature
  • 10 hours of sunshine per day
  • 1 day with some rainfall in September in Seminyak1
    1 day with some rainfall
  • 23°C minimum night-time temperature in September in Seminyak23
    23°C min night temperature
  • 12 hours of daylight per day in September in Seminyak12
    12 hours of daylight per day
  • High heat & humidity in September in SeminyakH
    High heat & humidity
  • 110 mm monthly rainfall in September in Seminyak110
    110 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Seminyak11
    11+ (Extreme) UV index
  • 26°C sea temperature in September in Seminyak26
    26°C sea temperature

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The September weather guide for Bali (Seminyak) 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.

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

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More about Bali

How hot is it in Seminyak in September?

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

How sunny is it in Seminyak in September?

There are normally 10 hours of bright sunshine each day in Seminyak in September - that's 85% of daylight hours.

How warm is the sea around Seminyak in September?

The average sea temperature around Seminyak in September is 26°C.

Does it ever rain in Seminyak in September?

There is usually 1 day with some rain in Seminyak in September and the average monthly rainfall is 110mm.

Seminyak September sunrise & sunset times

Browse the sunrise and sunset times for Seminyak in September 2025. Select a month to view Seminyak sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

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

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