September
Weather in Tonga for September 2025
Your guide to Tonga weather in September - trends and predictions
In general, the average temperature in Tonga at the beginning of September is 22 °C. As the month progressed, temperatures tended to slightly increase, reaching an average of 22.4 °C by the end of September.
The climate of Tonga in September is notably wet, with an average of 11 rainy days, and a total of 55.8 mm of precipitation.
Temperatures
Rain 🌧️
19
Dry days
11
Rainy days
0
Snow days
22°/21°
Temperatures
33 km/h
Avg max wind
74 %
Avg humidity
Tonga in September average weather
Move between months or click on a day
| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  22° | 2 22° | 3 22° | 4 22° | 5  22° | 6  22° | 7 22° |
| 8 22° | 9 22° | 10 23° | 11 23° | 12 22° | 13 23° | 14  22° |
| 15 23° | 16 23° | 17 23° | 18 22° | 19 22° | 20 22° | 21 22° |
| 22  22° | 23 22° | 24 22° | 25 22° | 26 22° | 27 23° | 28 23° |
| 29 23° | 30 22° |
You can click on date
Access Tonga weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Temperatures trend during September in Tonga
See the weather trend as well as the moving average line
September weather day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| 1 Sept. | Patchy rain possible | 22° /21° | 0.5 mm | 6 | |
| 2 Sept. | Patchy rain possible | 22° /21° | 0.3 mm | 6 | |
| 3 Sept. | Patchy rain possible | 22° /21° | 0.1 mm | 6 | |
| 4 Sept. | Patchy rain possible | 22° /21° | 0.1 mm | 6 | |
| 5 Sept. | Partly cloudy | 22° /21° | 0.1 mm | 6 | |
| 6 Sept. | Cloudy | 22° /21° | 0.4 mm | 6 | |
| 7 Sept. | Patchy rain possible | 22° /21° | 0.7 mm | 6 | |
| 8 Sept. | Light rain shower | 22° /21° | 4.2 mm | 6 | |
| 9 Sept. | Light rain shower | 22° /21° | 9 mm | 6 | |
| 10 Sept. | Light rain shower | 23° /21° | 2.7 mm | 6 | |
| 11 Sept. | Light rain shower | 23° /21° | 8.4 mm | 6 | |
| 12 Sept. | Cloudy | 22° /21° | 11.2 mm | 6 | |
| 13 Sept. | Cloudy | 23° /21° | 0.8 mm | 6 | |
| 14 Sept. | Overcast | 22° /22° | 0.2 mm | 6 | |
| 15 Sept. | Cloudy | 23° /22° | 0.1 mm | 6 | |
| 16 Sept. | Light rain shower | 23° /22° | 0.9 mm | 6 | |
| 17 Sept. | Patchy rain possible | 23° /21° | 5.1 mm | 6 | |
| 18 Sept. | Light rain shower | 22° /21° | 1.8 mm | 6 | |
| 19 Sept. | Patchy rain possible | 22° /21° | 0.5 mm | 6 | |
| 20 Sept. | Light rain shower | 22° /20° | 0.9 mm | 6 | |
| 21 Sept. | Light rain shower | 22° /21° | 0.9 mm | 6 | |
| 22 Sept. | Light drizzle | 22° /21° | 0.6 mm | 6 | |
| 23 Sept. | Light rain shower | 22° /21° | 1.2 mm | 6 | |
| 24 Sept. | Light rain shower | 22° /21° | 0.8 mm | 6 | |
| 25 Sept. | Patchy rain possible | 22° /21° | 0.9 mm | 6 | |
| 26 Sept. | Patchy rain possible | 22° /21° | 0 mm | 6 | |
| 27 Sept. | Patchy rain possible | 23° /21° | 0 mm | 6 | |
| 28 Sept. | Partly cloudy | 23° /22° | 0.1 mm | 6 | |
| 29 Sept. | Light rain shower | 23° /21° | 2.9 mm | 6 | |
| 30 Sept. | Cloudy | 22° /20° | 0.4 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Tonga in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Tonga forecast closer to your planned date for the most up-to-date weather information.
Tonga in September - FAQ
What are the expected maximum and minimum temperatures in Tonga during September?
During September, expect a variety of temperatures with highs around 22° and lows near 21°, suitable for diverse activities and preferences.
How much rainfall should be expected in Tonga during September?
Moderate rainfall is anticipated in Tonga during September, with a total of 55.8 mm spread over approximately 11 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Tonga during September?
The average wind speed in Tonga during September is 33 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Tonga
Explore the daily rainfall trends and prepare for Tongas September weather 💧
UV exposure in Tonga during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Regions in Tonga
Choose a region for an accurate weather forecasts
Top locations in Tonga
Select a location for an accurate weather forecast
More Locations Quick links
You are here
Where is Tonga?Get accurate weather forecasts for Tonga, located at latitude -21.137 and longitude -175.201. Stay updated with localized weather information tailored for Tonga.
Found a mistake?
We appreciate your attention to details. Tell us here.