Tonga weather in August 2025

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

  • 25°C maximum daytime temperature in August in Tonga (Nuku'alofa)25
    25°C max day temperature
  • 3 days with some rainfall in August in Tonga (Nuku'alofa)3
    3 days with some rainfall
  • 20°C minimum night-time temperature in August in Tonga (Nuku'alofa)20
    20°C min night temperature
  • 11 hours of daylight per day in August in Tonga (Nuku'alofa)11
    11 hours of daylight per day
  • Low heat & humidity in August in Tonga (Nuku'alofa)L
    Low heat & humidity
  • 108 mm monthly rainfall in August in Tonga (Nuku'alofa)108
    108 mm of monthly rainfall
  • UV (maximum) index 8 (Very High) in August in Tonga (Nuku'alofa)8
    8 (Very High) UV index
  • 23°C sea temperature in August in Tonga (Nuku'alofa)23
    23°C sea temperature

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The August 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 August. 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 August?

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

How warm is the sea around Tonga in August?

The average sea temperature around Nuku'alofa, Tonga in August is 23°C.

Does it ever rain in Tonga in August?

There are usually 3 days with some rain in Nuku'alofa, Tonga in August and the average monthly rainfall is 108mm.

Tonga August sunrise & sunset times

Browse the sunrise and sunset times for Tonga in August 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
Friday, 1st August 2025 07:12 18:22
Saturday, 16th August 2025 07:03 18:27
Sunday, 31st August 2025 06:51 18:31

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