Christmas Island weather in September 2025

Expect 88°F 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 Kiribati in 2025/2026.

  • 88°F maximum daytime temperature in September in Christmas Island88
    88°F max day temperature
  • 10 days with some rainfall in September in Christmas Island10
    10 days with some rainfall
  • 75°F minimum night-time temperature in September in Christmas Island75
    75°F min night temperature
  • 12 hours of daylight per day in September in Christmas Island12
    12 hours of daylight per day
  • Very high heat & humidity in September in Christmas IslandVH
    Very High heat & humidity
  • 1.9 inches monthly rainfall in September in Christmas Island1.9
    1.9 inches of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in September in Christmas Island11
    11+ (Extreme) UV index
  • 81°F sea temperature in September in Christmas Island81
    81°F sea temperature

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The September weather guide for Kiribati (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)  |  Imperial (°F)

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How hot is it in Christmas Island in September?

Daytime temperatures usually reach 88°F in Christmas Island in September with very high heat and humidity, falling to 75°F at night.

How warm is the sea around Christmas Island in September?

The average sea temperature around Christmas Island in September is 81°F.

Does it rain in Christmas Island in September?

There are usually 10 days with some rain in Christmas Island in September and the average monthly rainfall is 1.9 inches.

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 06:25 18:34
Monday, 15th September 2025 06:21 18:29
Tuesday, 30th September 2025 06:17 18:23

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