Tonga weather

Read our complete guide to the weather in Tonga.

Below are the temperatures expected today at popular destinations in Tonga. Select a destination to compare today's forecast with average weather conditions.

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Recommended for Tonga

The weather guide for Tonga (Nuku'alofa) shows long term weather averages processed from data supplied by CRU (University of East Anglia) & today's weather forecast provided by meteoblue. Find out more about our data sources.

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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

When is the best time to go to Tonga?

The best time to go to Tonga (Nuku'alofa) is April, May, June, July, August, September, October, November and December based on the following average weather conditions.

Maximum daytime temperature = 22 - 30°C [remove]
Daily hours of sunshine = 10 hours or more [remove]

Change the criteria to reflect your weather preferences.

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Max Day Temperature (°C)

  • 29°C maximum daytime temperature in January in Tonga (Nuku'alofa)29
    Jan
  • 29°C maximum daytime temperature in February in Tonga (Nuku'alofa)29
    Feb
  • 29°C maximum daytime temperature in March in Tonga (Nuku'alofa)29
    Mar
  • 28°C maximum daytime temperature in April in Tonga (Nuku'alofa)28
    Apr
  • 26°C maximum daytime temperature in May in Tonga (Nuku'alofa)26
    May
  • 26°C maximum daytime temperature in June in Tonga (Nuku'alofa)26
    Jun
  • 25°C maximum daytime temperature in July in Tonga (Nuku'alofa)25
    Jul
  • 25°C maximum daytime temperature in August in Tonga (Nuku'alofa)25
    Aug
  • 25°C maximum daytime temperature in September in Tonga (Nuku'alofa)25
    Sep
  • 26°C maximum daytime temperature in October in Tonga (Nuku'alofa)26
    Oct
  • 27°C maximum daytime temperature in November in Tonga (Nuku'alofa)27
    Nov
  • 28°C maximum daytime temperature in December in Tonga (Nuku'alofa)28
    Dec

Best time to go for the weather

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

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Tonga weather overview

Tonga comprises three groups of islands situated southeast of Fiji. These islands share a tropical oceanic climate, which means high temperatures and rain year round, with heaviest downpours occurring between December and April - the hottest and most humid months of the year. However, sea breezes modify humidity along the islands' coasts.

Although heavy cloud cover can mean a few miserable days in the wettest periods, this is comparatively rare. Generally speaking, the islands enjoy frequent bouts of strong sunshine between rain showers.

What to pack for Tonga weather

Pack light clothes with warmer wraps for the evenings and mountain trips. Be prepared for rain at any time of year.

Which is the hottest month in Tonga?

The hottest time of year in Nuku'alofa, Tonga is normally February. Expect maximum daytime temperatures to reach 29°C with high heat and humidity.

Which month has the most rain in Tonga?

In terms of rainfall, March is usually the wettest month in Nuku'alofa, Tonga with 263mm on average. There are normally 18 days in March with some rain.

When is the sea warmest in Tonga?

The sea is usually at its warmest in Nuku'alofa, Tonga in February when the water temperature reaches 27°C.

Compare Tonga weather with the USA

Below the Tonga weather chart shows average maximum daytime temperature for Tonga (Nuku'alofa) and the USA (Washington).

Maximum daytime temperature (°C)

Tonga (Nuku'alofa)
USA (Washington)
29
5
29
7
29
13
28
19
26
24
26
29
25
31
25
30
25
26
26
20
27
14
28
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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

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