Tongatapu weather
Our guide to the weather in Tongatapu during September
We've looked at the most up-to-date weather data for Tongatapu, covering the last 12 years up to 2024, plus we've asked our team of travel bloggers for their first-hand experiences in order to answer the most frequently asked questions about Tongatapu weather in September.
How warm is it in Tongatapu during September?
The temperature is extremely stable in September with average highs of 23℃ and lows just 1℃ lower at 22℃. The UV index will be moderate at this time of year, so not something to worry about for the average person. However, if you're going to be outside for long periods it's worth wearing a broad spectrum SPF 30+ sunscreen and UV-blocking sunglasses. Remember that bright surfaces, such as water and sand increase UV exposure.
Does it rain in Tongatapu during September?
On average, there will be 4 rainy days during the month, amounting to 136.9mm in total. That's a significant amount of rain. For comparison, the wettest months in the UK typically sees between 80mm and 100mm, depending on where you are. There's a small chance that you'll catch a thunderstorm during your trip.
Is it windy in Tongatapu during September?
Expect moderate breeze becoming stronger at times during September, with occasional gusts up to 20mph. With warm air temperatures and high humidity, any breeze will feel warm but refreshing.
Weather in Tongatapu
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