Nuku'alofa weather in September 2025

Expect 25°C daytime maximum temperatures in the shade with on average -9999 hours of sunshine per day in Nuku'alofa in September. Check more long-term weather averages for Nuku'alofa in September before you book your next holiday to Tonga in 2025/2026.

  • 25°C maximum daytime temperature in September in Nuku'alofa25
    25°C max day temperature
  • 4 days with some rainfall in September in Nuku'alofa4
    4 days with some rainfall
  • 20°C minimum night-time temperature in September in Nuku'alofa20
    20°C min night temperature
  • 12 hours of daylight per day in September in Nuku'alofa12
    12 hours of daylight per day
  • Low heat & humidity in September in Nuku'alofaL
    Low heat & humidity
  • 114 mm monthly rainfall in September in Nuku'alofa114
    114 mm of monthly rainfall
  • UV (maximum) index 10 (Very High) in September in Nuku'alofa10
    10 (Very High) UV index
  • 23°C sea temperature in September in Nuku'alofa23
    23°C sea temperature

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The September weather guide for Tonga (Nuku'alofa) 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 Nuku'alofa in September?

Daytime temperatures usually reach 25°C in Nuku'alofa in September with low heat and humidity, falling to 20°C at night.

How warm is the sea around Nuku'alofa in September?

The average sea temperature around Nuku'alofa in September is 23°C.

Does it rain in Nuku'alofa in September?

There are usually 4 days with some rain in Nuku'alofa in September and the average monthly rainfall is 114mm.

Nuku'alofa September sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st September 2025 06:50 18:32
Monday, 15th September 2025 06:38 18:35
Tuesday, 30th September 2025 06:23 18:39

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