Tonga weather by month

Check out Tonga weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum daytime temperature °C
29°C maximum daytime temperature in January in Nuku'alofa29
29°C maximum daytime temperature in February in Nuku'alofa29
29°C maximum daytime temperature in March in Nuku'alofa29
28°C maximum daytime temperature in April in Nuku'alofa28
26°C maximum daytime temperature in May in Nuku'alofa26
26°C maximum daytime temperature in June in Nuku'alofa26
25°C maximum daytime temperature in July in Nuku'alofa25
25°C maximum daytime temperature in August in Nuku'alofa25
25°C maximum daytime temperature in September in Nuku'alofa25
26°C maximum daytime temperature in October in Nuku'alofa26
27°C maximum daytime temperature in November in Nuku'alofa27
28°C maximum daytime temperature in December in Nuku'alofa28
Days with some rainfall
18 days with some rainfall in January in Nuku'alofa18
17 days with some rainfall in February in Nuku'alofa17
18 days with some rainfall in March in Nuku'alofa18
13 days with some rainfall in April in Nuku'alofa13
9 days with some rainfall in May in Nuku'alofa9
5 days with some rainfall in June in Nuku'alofa5
4 days with some rainfall in July in Nuku'alofa4
3 days with some rainfall in August in Nuku'alofa3
4 days with some rainfall in September in Nuku'alofa4
4 days with some rainfall in October in Nuku'alofa4
6 days with some rainfall in November in Nuku'alofa6
12 days with some rainfall in December in Nuku'alofa12
Sea temperature °C
27°C sea temperature in January in Nuku'alofa27
27°C sea temperature in February in Nuku'alofa27
27°C sea temperature in March in Nuku'alofa27
27°C sea temperature in April in Nuku'alofa27
26°C sea temperature in May in Nuku'alofa26
25°C sea temperature in June in Nuku'alofa25
24°C sea temperature in July in Nuku'alofa24
23°C sea temperature in August in Nuku'alofa23
23°C sea temperature in September in Nuku'alofa23
24°C sea temperature in October in Nuku'alofa24
25°C sea temperature in November in Nuku'alofa25
26°C sea temperature in December in Nuku'alofa26

More about Tonga

Tonga by month

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

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The climate guide for Tonga (Nuku'alofa) shows long term monthly 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 for next month - March. Select a destination to see the climate guide for all months of the year.

All Tonga destinations

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

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Tonga climate overview

The Kingdom of Tonga is a South Pacific archipelago lying to the east of Fiji, made up of 172 tropical islands. Named 'the Friendly Isles' by Captain Cook, Tonga has the distinction of being the only island group in the South Pacific never to have been colonised, although it became a British Protectorate in 1900. Today its people still follow a traditional lifestyle and their respect for time-honoured customs has helped Tonga retain its distinctive character as one of the most intact cultures of old Polynesia.

The islands have a mixture of volcanic and raised coral origins, resulting in widely varying geography and vegetation. In the north the Niuas and Vava'u island groups are generally more mountainous supporting dense woodland. However most of the islands, particularly in the south, consist of low-lying coral formations. About two thirds of the population live on Tongatapu where the capital Nuku'alofa backs onto a large lagoon.

A number of islands are volcanically active including Falcon Island, a rare submerged volcano that periodically erupts underwater. Beautiful beaches and coral reefs also fringe most islands, while on Late and Tofua there are still some areas of high diversity native forest still standing.

The climate is tropical with rainfall in all months becoming heaviest during February and March. This is also the hottest time of the year although, with fairly constant south-east trade winds and its relatively southern location, Tonga is not as hot as Fiji and Samoa. From April to October there is a cooler drier period when it is also likely to be sunnier.

Tropical cyclones are possible from January to April, and are more likely in the north.

Compare Tonga with the UK

Below the Tonga chart shows average maximum daytime temperature for Tonga (Nuku'alofa) and the UK (London).

Maximum daytime temperature (°C)

Tonga (Nuku'alofa)
UK (London)
29
7
29
7
29
10
28
13
26
17
26
20
25
22
25
22
25
19
26
15
27
10
28
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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

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