New Caledonia weather in September 2025

Expect 24°C daytime maximum temperatures in the shade with on average 7 hours of sunshine per day in New Caledonia in September. Check more long-term weather averages for New Caledonia in September before you book your next holiday to New Caledonia in 2025/2026.

  • 24°C maximum daytime temperature in September in New Caledonia (Noumea)24
    24°C max day temperature
  • 7 hours of sunshine per day
  • 9 days with some rainfall in September in New Caledonia (Noumea)9
    9 days with some rainfall
  • 17°C minimum night-time temperature in September in New Caledonia (Noumea)17
    17°C min night temperature
  • 12 hours of daylight per day in September in New Caledonia (Noumea)12
    12 hours of daylight per day
  • No heat & humidity in September in New Caledonia (Noumea)0
    No heat & humidity
  • 40 mm monthly rainfall in September in New Caledonia (Noumea)40
    40 mm of monthly rainfall
  • UV (maximum) index 9 (Very High) in September in New Caledonia (Noumea)9
    9 (Very High) UV index
  • 22°C sea temperature in September in New Caledonia (Noumea)22
    22°C sea temperature

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The September weather guide for New Caledonia (Noumea) 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.

Top New Caledonia destinations

Below are average maximum temperatures at popular countries, regions and places in New Caledonia in September. Select a holiday destination to see more weather parameters.

All New Caledonia destinations

Metric (°C / mm)  |  Imperial (°F / inches)

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How hot is it in New Caledonia in September?

Daytime temperatures usually reach 24°C in Noumea, New Caledonia in September, falling to 17°C at night.

How sunny is it in New Caledonia in September?

There are normally 7 hours of bright sunshine each day in Noumea, New Caledonia in September - that's 61% of daylight hours.

How warm is the sea around New Caledonia in September?

The average sea temperature around Noumea, New Caledonia in September is 22°C.

Does it rain in New Caledonia in September?

There are usually 9 days with some rain in Noumea, New Caledonia in September and the average monthly rainfall is 40mm.

New Caledonia September sunrise & sunset times

Browse the sunrise and sunset times for New Caledonia in September 2025. Select a month to view New Caledonia sunrise and sunset times for the next 12 months. The New Caledonia sunrise and sunset times shown below are for Noumea.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:04 17:44
Monday, 15th September 2025 05:51 17:48
Tuesday, 30th September 2025 05:36 17:53

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