Climate and Average Weather in Tonga
Tonga has an equatorial climate with a hot and wet season from December to April with temperatures rising up to 33 degrees Celsius (91° Fahrenheit). Most of the country's 1600 mm average of annual rain usually falls during this humid season, which is also cyclone season. Luckily big cyclones only occur every 10-15 years.Temperatures in Tonga are fairly constant. During the day the thermometer goes towards 30 degrees Celsius (86°F) throughout the year. In the dry period May to October the temperature is a few degrees lower with daytime averages of 26°C (78.8°F). Due to the warm sea water, temperatures drop only a few degrees at night.
Interested in more detailed Weather and Climate information?
Please select the city you wish to travel to, or the one closest to your destination. Each selected city will show you the following graphs:
1. Average minimum and maximum temperature over the year
2. Average monthly precipitation over the year (rainfall, snow)
3. Average monthly hours of sunshine over the year
On certain pages we also offer other historical weather data like humidity, wind speed and water temperature.