Tonga weather in December 2025

Expect 28°C daytime maximum temperatures in the shade in Tonga in December based on long-term weather averages. There is usually 12 days with some rainfall and 127 mm of average monthly rainfall in December.

  • 28°C maximum daytime temperature in December in Tonga (Nuku'alofa)28
    28°C max day temperature
  • 12 days with some rainfall in December in Tonga (Nuku'alofa)12
    12 days with some rainfall
  • 23°C minimum night-time temperature in December in Tonga (Nuku'alofa)23
    23°C min night temperature
  • 13 hours of daylight per day in December in Tonga (Nuku'alofa)13
    13 hours of daylight per day
  • High heat & humidity in December in Tonga (Nuku'alofa)H
    High heat & humidity
  • 127 mm monthly rainfall in December in Tonga (Nuku'alofa)127
    127 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in December in Tonga (Nuku'alofa)11
    11+ (Extreme) UV index
  • 26°C sea temperature in December in Tonga (Nuku'alofa)26
    26°C sea temperature

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The December 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.

Top Tonga destinations

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

All Tonga destinations

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

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How hot is it in Tonga in December?

Daytime temperatures usually reach 28°C in Nuku'alofa, Tonga in December with high heat and humidity, falling to 23°C at night.

How warm is the sea around Tonga in December?

The average sea temperature around Nuku'alofa, Tonga in December is 26°C.

Does it rain in Tonga in December?

There are usually 12 days with some rain in Nuku'alofa, Tonga in December and the average monthly rainfall is 127mm.

What is the chance of a cyclone in Tonga in December?

On average less than 1 day in December in Nuku'alofa, Tonga is likely to be affected by the passage of one or more tropical storms.

Tonga December sunrise & sunset times

Browse the sunrise and sunset times for Tonga in December 2025. Select a month to view Tonga sunrise and sunset times for the next 12 months. The Tonga sunrise and sunset times shown below are for Nuku'alofa.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 05:50 19:09
Tuesday, 16th December 2025 05:54 19:19
Wednesday, 31st December 2025 06:02 19:26

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