Normal weather for Tonga in September
It's warm in September in Tonga with an average temperature of 26°C. Temperatures this month range from a low of 25°C to a high of 27°C. At night, you can expect temperatures between 19°C and 22°C.
In September, there is an average of 101 mm of precipitation, spread over 12 days. The wind speed is around 4 Bft, mostly coming from the Southeast.
Tonga in September |
UK | ||
|---|---|---|---|
 Average Temperature |
26°C | 20°C | |
 High Temp |
27°C | 22°C | |
| Low Temp |
25°C | 17°C | |
 Total Precipitation |
101 mm | 44 mm | |
| Rainy Days |
12 days | 8 days | |
Start of September
The month of September starts in Tonga with warm temperatures, averaging around 26°C during the day and nights close to 20°C. A few showers might pop up in the first days of the month, but the weather remains mostly sunny and dry.
Since temperatures can differ between day and night, it’s a good idea to dress in layers. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal for the day. In the evening and morning, a T-shirt, light trousers or skirt, and a light jacket are recommended.
Mid-September
By mid-September, the average daytime temperature stays the same at 26°C, with nights close to 21°C. There might be a few showers during this period, but plenty of dry days with sunshine too.
Temperatures vary between day and night, so it’s smart to wear layers. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal for the day. In the evening and morning, a T-shirt, light trousers or skirt, and a light jacket are recommended.
End of September
By the end of September, the average daytime temperature in Tonga will be around 27°C, with nights close to 21°C. There’s regular precipitation, but with a bit of luck, you’ll also get some dry and sunny days.
As it gets cooler in the evening, it’s best to wear layers. Breezy clothes like shorts or a dress, plus a hat and sunglasses, are ideal for the day. In the evening and morning, a T-shirt, light trousers or skirt, and a light jacket are recommended.
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Is September a good time to visit Tonga?
After some sun? Then September isn’t the best time to be in Tonga. The temperature is pleasant, but there’s too much chance of rain this month.
Temperature records for Tonga in September
With 30°C, Tonga hit the highest temperature in the last 10 years in September 2016. The lowest daytime temperature in this month was 21°C in 2015. The extreme night temperatures ranged from a low of 12°C to a high of 24°C.
Check out the climate of Tonga for all months and discover the best travel time
The climate of Tonga is based on weather data from Nuku‘alofa. Other locations might have different weather. You can check out all destinations in Tonga for a full picture of the climate.
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Daily Temperature in September in Tonga
This chart shows the average daily temperatures, both day and night, for each day in September in Tonga, measured in degrees Celsius. The red line represents the maximum temperatures, while the blue line shows the minimums. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, gives an overview of the average daily temperatures during this month.
Daily Precipitation in September in Tonga
The chart below shows the average daily precipitation in September for Tonga, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are shown at the bottom of the chart.
A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that rain is more likely. But it’s still an average, so each day can be different. Based on historical weather data for September, you can expect around 12 days of rain in Tonga.
Daily UV Index in September in Tonga
This chart shows the average daily UV index in September in Tonga, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.
Temperature in September in Tonga Over the Years
This chart shows the average temperature in September in Tonga, measured in degrees Celsius, over the past years.
Total Precipitation in September in Tonga Over the Years
This chart shows the average precipitation in September in Tonga, measured in millimetres over the past years. Precipitation is always measured as water, even if it’s snow or hail.
Daily climate in September for Tonga
Click on a specific day in September for detailed info on the typical weather on that day in Tonga. Check out the historical temperatures and precipitation over the past 10 years on this day.
Weather experiences in September in Tonga
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Average Weather in Tonga by Month
Click on a month below to see detailed weather info for Tonga. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.
