Tonga Weather Forecast
Tonga weather: 71°F, partly cloudy. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Tonga weather in September
Weather map for Tonga
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Climate in Tonga month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 85° | 77° | 6,9 in | ★★★☆☆ |
| February | 85° | 78° | 8,0 in | ★★★☆☆ |
| March | 84° | 77° | 13,5 in | ★★☆☆☆ |
| April | 83° | 77° | 2,8 in | ★★★★☆ |
| May | 80° | 74° | 8,2 in | ★★★☆☆ |
| June | 77° | 71° | 2,7 in | ★★★★☆ |
| July | 75° | 69° | 3,0 in | ★★★★☆ |
| August | 75° | 69° | 3,5 in | ★★★★☆ |
| September | 76° | 70° | 2,2 in | ★★★★☆ |
| October | 78° | 71° | 4,6 in | ★★★★☆ |
| November | 80° | 73° | 8,1 in | ★★★☆☆ |
| December | 83° | 76° | 5,6 in | ★★★★☆ |
Climate type: Tropical. Source: Open-Meteo archive (ERA5).
Best time to visit Tonga
Go in April, June, July, August and September. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: February, March and May - expect the least comfortable mix of heat, cold or rain.
What to pack, what to skip
- A packable rain shell - 5 of the next 7 days carry a real chance of rain
- Insect repellent and quick-dry fabrics for humidity
- Avoid exposed ridgelines, small boats and rooftop viewpoints while gusts stay above 37 mph.
- If your dates are flexible, avoid February, March and May - historically the least comfortable months here.
See the Tonga forecast by time range
Tonga weather - more answers
Explore Tonga
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is Tonga?
Tonga is a country in Oceania. Its coordinates are -21.1393, -175.2049. It lies in Oceania.
What is the weather like in Tonga right now?
It is currently 71°F (22°C) with partly cloudy. Humidity is 59% and wind is 18 mph.
When is the best time to visit Tonga?
April, June, July, August and September offer the most comfortable conditions in Tonga, which has a tropical climate. February, March and May are usually the hardest months for outdoor plans.
What time zone is Tonga in?
Tonga observes Pacific/Tongatapu (UTC+13:00). The local time is 5:18 PM.
How many people live in Tonga?
Tonga has a population of approximately 105.000.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (countries-v1) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 23, 2026 at 5:18 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
