Kupang weather in September 2025

Expect 32°C daytime maximum temperatures in the shade with on average 10 hours of sunshine per day in Kupang in September. Check more long-term weather averages for Kupang in September before you book your next holiday to Indonesia in 2025/2026.

  • 32°C maximum daytime temperature in September in Kupang32
    32°C max day temperature
  • 10 hours of sunshine per day
  • 1 day with some rainfall in September in Kupang1
    1 day with some rainfall
  • 21°C minimum night-time temperature in September in Kupang21
    21°C min night temperature
  • 12 hours of daylight per day in September in Kupang12
    12 hours of daylight per day
  • High heat & humidity in September in KupangH
    High heat & humidity
  • 10 mm monthly rainfall in September in Kupang10
    10 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Kupang11
    11+ (Extreme) UV index
  • 27°C sea temperature in September in Kupang27
    27°C sea temperature

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The September weather guide for Indonesia (Kupang) 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 Indonesia

How hot is it in Kupang in September?

Daytime temperatures usually reach 32°C in Kupang in September with high heat and humidity, falling to 21°C at night.

How sunny is it in Kupang in September?

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

How warm is the sea around Kupang in September?

The average sea temperature around Kupang in September is 27°C.

Does it ever rain in Kupang in September?

There is usually 1 day with some rain in Kupang in September and the average monthly rainfall is 10mm.

Kupang September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:48 17:43
Monday, 15th September 2025 05:40 17:42
Tuesday, 30th September 2025 05:30 17:41

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