Tonga Weather Forecast
Tonga weather: Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Summary
Tonga is a country in Oceania. Tonga is a country in Oceania with its capital at Nuku'alofa. It has a population of about 105.000. The capital is Nuku'alofa.
The best time to visit Tonga is April, June, July and September. The climate is tropical. February, March and May tend to be the least comfortable months. February is the warmest month with average highs near 85°F, while July is the coldest with lows near 69°F.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
See the Tonga forecast by time range
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° | 2,2 in | ★★★★☆ |
| August | 75° | 69° | 4,6 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).
Weather map for Tonga
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Best time to visit Tonga
Go in April, June, July 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.
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.
When is the best time to visit Tonga?
April, June, July 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.
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 5, 2026 UTC. Live blocks refresh every 15 minutes; climate averages monthly.
