Kupang weather in September 2025

Expect 90°F 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.

  • 90°F maximum daytime temperature in September in Kupang90
    90°F max day temperature
  • 10 hours of sunshine per day
  • 1 day with some rainfall in September in Kupang1
    1 day with some rainfall
  • 70°F minimum night-time temperature in September in Kupang70
    70°F 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
  • 0.4 inches monthly rainfall in September in Kupang0.4
    0.4 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Kupang11
    11+ (Extreme) UV index
  • 81°F sea temperature in September in Kupang81
    81°F 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)  |  Imperial (°F)

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More about Indonesia

How hot is it in Kupang in September?

Daytime temperatures usually reach 90°F in Kupang in September with high heat and humidity, falling to 70°F 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 81°F.

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 0.4 inches.

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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