Kairiru Island weather in September 2025

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

  • 31°C maximum daytime temperature in September in Kairiru Island31
    31°C max day temperature
  • 6 hours of sunshine per day
  • 16 days with some rainfall in September in Kairiru Island16
    16 days with some rainfall
  • 22°C minimum night-time temperature in September in Kairiru Island22
    22°C min night temperature
  • 12 hours of daylight per day in September in Kairiru Island12
    12 hours of daylight per day
  • High heat & humidity in September in Kairiru IslandH
    High heat & humidity
  • 149 mm monthly rainfall in September in Kairiru Island149
    149 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Kairiru Island11
    11+ (Extreme) UV index
  • 28°C sea temperature in September in Kairiru Island28
    28°C sea temperature

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The September weather guide for Papua New Guinea (Kairiru Island) 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 Kairiru Island in September?

Daytime temperatures usually reach 31°C in Kairiru Island in September with high heat and humidity, falling to 22°C at night.

How sunny is it in Kairiru Island in September?

There are normally 6 hours of bright sunshine each day in Kairiru Island in September - that's 46% of daylight hours.

How warm is the sea around Kairiru Island in September?

The average sea temperature around Kairiru Island in September is 28°C.

Does it rain in Kairiru Island in September?

There are usually 16 days with some rain in Kairiru Island in September and the average monthly rainfall is 149mm.

Kairiru Island September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:25 18:27
Monday, 15th September 2025 06:19 18:24
Tuesday, 30th September 2025 06:12 18:20

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