Christmas Island weather in September 2025

Expect 31°C daytime maximum temperatures in the shade with on average -9999 hours of sunshine per day in Christmas Island in September. Check more long-term weather averages for Christmas Island in September before you book your next holiday to Christmas Island in 2025/2026.

  • 31°C maximum daytime temperature in September in Christmas Island31
    31°C max day temperature
  • 8 days with some rainfall in September in Christmas Island8
    8 days with some rainfall
  • 19°C minimum night-time temperature in September in Christmas Island19
    19°C min night temperature
  • 12 hours of daylight per day in September in Christmas Island12
    12 hours of daylight per day
  • Moderate heat & humidity in September in Christmas IslandM
    Moderate heat & humidity
  • 141 mm monthly rainfall in September in Christmas Island141
    141 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Christmas Island11
    11+ (Extreme) UV index
  • 26°C sea temperature in September in Christmas Island26
    26°C sea temperature

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The September weather guide for Christmas 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 Christmas Island in September?

Daytime temperatures usually reach 31°C in Christmas Island in September with moderate heat and humidity, falling to 19°C at night.

How warm is the sea around Christmas Island in September?

The average sea temperature around Christmas Island in September is 26°C.

Does it rain in Christmas Island in September?

There are usually 8 days with some rain in Christmas Island in September and the average monthly rainfall is 141mm.

Christmas Island September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:00 17:55
Monday, 15th September 2025 05:51 17:54
Tuesday, 30th September 2025 05:42 17:53

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