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The climate of the Tonga Islands: when to go to Tonga

The climate of the Tonga islands is tropical maritime. The climate of the islands can easily be divided into two distinct seasons: a cooler and less rainy season between May and November, and a warmer and rainier season between December and April. In the capital Nuku’alofa the average maximum temperatures are maintained between 29 ° C in January and 24 ° C in August, the average minimum temperatures vary between 23 ° C in February and 18 ° C in August.

The rains are most abundant between December and March. March and February are the rainiest months ever. The average annual rainfall is 1,600 mm in the island of Tongatapu and in the Haapai group of islands, while it is 2,200 mm in Vava’u and 2,600 mm in Niuatoputapu. In the islands there is no real dry season. In the capital Nukuʻalofa there are on average 134 days of rain per year, spread between 10 and 14 days of rain per month. The average annual humidity is around 75%.

The months between December and April are the months in which tropical hurricanes can be struck on the islands. The northernmost islands, which are located closest to the Equator, are most at risk of hurricanes.

The temperature of the sea around the island of Tongatapu varies between 23 ° C and 27 ° C.

WHEN TO GO TO TONGA

The best time for a trip to the Tonga islands are the relatively dry and cool months between May and November.

THE CLIMATE OF THE TONGA ISLANDS: CLIMATE TABLES

NUKU’ALOFA, TONGATAPU (4 meters)
Month Average low (°C) Average high (°C) Precip. (mm) Precip. days
January 22 28 174  
February 22 29 189  
March 22 28 263  
April 21 27 156  
May 20 26 102  
June 18 25 72  
July 17 25 87  
August 18 24 108  
September 18 25 114  
October 19 25 93  
November 20 27 114  
December 20 27 127  
YEAR     1599  
TONGATAPU
Month Sea Water Temperature °C
January 27
February 27
March 27
April 27
May 26
June 24
July 24
August 23
September 23
October 24
November 24
December 25

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This post is also available in: German

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