Vava'u weather in September 2026

Q: How hot is it in Vava'u in September?

Daytime temperatures usually reach 25°C in Vava'u in September with low heat and humidity, falling to 20°C at night.

Q: How warm is the sea around Vava'u in September?

The average sea temperature around Vava'u in September is 23°C.

Q: Does it rain in Vava'u in September?

There are usually 4 days with some rain in Vava'u in September and the average monthly rainfall is 114mm.

Expect daytime maximum temperatures of 27°C in Vava'u, Tonga in September based on long-term weather averages. There is typically138 mm of rainfall in the month.

27
27°C max day temperature
5
5 days with some rainfall
21
21°C min night temperature
12
12 hours of daylight per day
M
Moderate heat & humidity
138
138 mm of monthly rainfall
11
11 (Extreme) UV index
25
25°C sea temperature

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The September weather guide for Tonga (Vava'u) shows long term 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.

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