Tonga weather in May 2025

Expect 26°C daytime maximum temperatures in the shade with on average -9999 hours of sunshine per day in Tonga in May. Check more long-term weather averages for Tonga in May before you book your next holiday to Tonga in 2025/2026.

  • 26°C maximum daytime temperature in May in Tonga (Nuku'alofa)26
    26°C max day temperature
  • 9 days with some rainfall in May in Tonga (Nuku'alofa)9
    9 days with some rainfall
  • 21°C minimum night-time temperature in May in Tonga (Nuku'alofa)21
    21°C min night temperature
  • 11 hours of daylight per day in May in Tonga (Nuku'alofa)11
    11 hours of daylight per day
  • Moderate heat & humidity in May in Tonga (Nuku'alofa)M
    Moderate heat & humidity
  • 102 mm monthly rainfall in May in Tonga (Nuku'alofa)102
    102 mm of monthly rainfall
  • UV (maximum) index 7 (High) in May in Tonga (Nuku'alofa)7
    7 (High) UV index
  • 26°C sea temperature in May in Tonga (Nuku'alofa)26
    26°C sea temperature

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The May 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 destinations in Tonga in May. Select a 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 May?

Daytime temperatures usually reach 26°C in Nuku'alofa, Tonga in May with moderate heat and humidity, falling to 21°C at night.

How warm is the sea around Tonga in May?

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

Does it rain in Tonga in May?

There are usually 9 days with some rain in Nuku'alofa, Tonga in May and the average monthly rainfall is 102mm.

Tonga May sunrise & sunset times

Browse the sunrise and sunset times for Tonga in May 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
Thursday, 1st May 2025 06:58 18:18
Friday, 16th May 2025 07:04 18:10
Saturday, 31st May 2025 07:10 18:07

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