The weather in September in Tonga
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.
Looking for sun? September isn’t a good month to be in Tonga. The temperature is nice, but there’s too much chance of rain.
Average temperatures and precipitation
This chart shows the average daily maximum and minimum temperatures (in degrees Celsius) and precipitation (in millimeters) in September for Tonga. A low precipitation value usually indicates little to no rainfall on that day in recent years, while a higher value suggests more frequent rainfall.
Temperature records
With 30°C in 2016, Tonga reached the highest temperature in September over the past 10 years. The lowest daytime temperature in this month was 21°C in 2015. The extreme nighttime temperatures ranged from a lowest recorded value of 12°C to a highest value of 24°C.
Rainfall amount
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.
Daily weather in September for Tonga
Click on any day in September to get detailed info about the usual weather on that day in Tonga. Check out the historical temperatures and precipitation over the past 10 years on this day.
September weather comparison
| Tonga | New York | |
|---|---|---|
| Average temperature | 26°C | 27°C |
| Max. temperature | 27°C | 31°C |
| Min. temperature | 19°C | -5°C |
| Total precipitation | 101 mm | 57 mm |
| Rainy days | 12 days | 9 days |
Start of September
The month of September starts in Tonga with warm temps, averaging around 26°C during the day and nights around 20°C.
Mid September
By mid-September, daytime temps stay steady at around 26°C, with nights around 21°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.
End of September
By the end of September, the average daytime temperature in Tonga is around 27°C, while nighttime temps are about 21°C. Expect regular precipitation, but if you’re lucky, you’ll also get some dry and sunny days.
Find affordable vacations to Tonga
Check out the climate of Tonga for all months and discover the best travel time
The climate in Tonga is based on weather data from Nuku‘alofa. Other spots might have different weather. You can check out all destinations in Tonga to get the full picture of the climate.
Temperature charts
These charts show the average temperatures in September in Tonga. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Daily Temperature in September in Tonga
Temperature in September in Tonga over the years
Precipitation charts
These charts show the average amount of precipitation in September in Tonga. Precipitation is always measured as water, even when it falls as snow or hail The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Daily Precipitation in September in Tonga
Total precipitation in September in Tonga over the years
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.
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.