Tonga Weather Forecast

The word ‘Tonga' means south. Tonga is situated further south from the equator than islands such as Samoa and is thus cooler than them.

Tonga's rainy season, which lasts from December to April, is also its warmest period. Temperatures in Tonga go above 32 °C (90 °F) during this season. May to November is cooler with temperatures barely reaching 27 °C (80 °F). In fact, warm clothes are occasionally required from June to August so plan your Tonga travel accordingly.

Tonga gets hit by at least two tropical cyclones each year. They generally occur between November and April, and sometimes in May as well.

The north winds in February and March are hot and moisture laden. The southeast winds blow from May to November, while the easterlies blow over the island the rest of the year. Bad weather is heralded by the west and northwest winds.

While moving from Tongatapu in the south to the more northern islands near the equator, the temperature rises from 23 °C to 27 °C (74 °F to 80 °F). The annual rainfall increases too, from 1,700 to 2,970 millimetres (67 to 117 in). The average daily humidity hovers around 80%.