Koror weather in September 2025

Expect 31°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Koror in September. Check more long-term weather averages for Koror in September before you book your next holiday to Palau in 2025/2026.

  • 31°C maximum daytime temperature in September in Koror31
    31°C max day temperature
  • 6 hours of sunshine per day
  • 16 days with some rainfall in September in Koror16
    16 days with some rainfall
  • 24°C minimum night-time temperature in September in Koror24
    24°C min night temperature
  • 12 hours of daylight per day in September in Koror12
    12 hours of daylight per day
  • Very high heat & humidity in September in KororVH
    Very High heat & humidity
  • 316 mm monthly rainfall in September in Koror316
    316 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Koror11
    11+ (Extreme) UV index
  • 29°C sea temperature in September in Koror29
    29°C sea temperature

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The September weather guide for Palau (Koror) 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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How hot is it in Koror in September?

Daytime temperatures usually reach 31°C in Koror in September with very high heat and humidity, falling to 24°C at night.

How sunny is it in Koror in September?

There are normally 6 hours of bright sunshine each day in Koror in September - that's 53% of daylight hours.

How warm is the sea around Koror in September?

The average sea temperature around Koror in September is 29°C.

Does it rain in Koror in September?

There are usually 16 days with some rain in Koror in September and the average monthly rainfall is 316mm.

What is the chance of a typhoon in Koror in September?

On average less than 1 day in September in Koror is likely to be affected by the passage of one or more tropical storms.

Koror September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:54 18:10
Monday, 15th September 2025 05:52 18:02
Tuesday, 30th September 2025 05:50 17:54

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