Rabaul weather in September 2025

Expect 30°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Rabaul in September. Check more long-term weather averages for Rabaul in September before you book your next holiday to Papua New Guinea in 2025/2026.

  • 30°C maximum daytime temperature in September in Rabaul30
    30°C max day temperature
  • 6 hours of sunshine per day
  • 19 days with some rainfall in September in Rabaul19
    19 days with some rainfall
  • 23°C minimum night-time temperature in September in Rabaul23
    23°C min night temperature
  • 12 hours of daylight per day in September in Rabaul12
    12 hours of daylight per day
  • High heat & humidity in September in RabaulH
    High heat & humidity
  • 143 mm monthly rainfall in September in Rabaul143
    143 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Rabaul11
    11+ (Extreme) UV index
  • 29°C sea temperature in September in Rabaul29
    29°C sea temperature

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

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

How sunny is it in Rabaul in September?

There are normally 6 hours of bright sunshine each day in Rabaul in September - that's 50% of daylight hours.

How warm is the sea around Rabaul in September?

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

Does it rain in Rabaul in September?

There are usually 19 days with some rain in Rabaul in September and the average monthly rainfall is 143mm.

Rabaul September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 05:51 17:52
Monday, 15th September 2025 05:44 17:49
Tuesday, 30th September 2025 05:37 17:45

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