Tonga Climate and Average Weather
Climate of Tonga: average temperatures, rainfall and seasons month by month.
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).
Recent extremes in Tonga
Highest and lowest readings observed in the last 3 years of reanalysis data - not all-time records.
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 this means for Tonga
Today is slightly cooler than average for August. The forecast high of 71°F is 4°F below the 75°F typical for this month.
A 13% chance means most of the area stays dry; a passing shower is possible but short.
Gusts to 36 mph will push high-sided vehicles on exposed roads and bridges.
Southern Hemisphere, so peak summer falls in December to February.
The gap between the warmest and coldest month averages 42°F - an unusually even climate through the year.
What to pack, what to skip
- A packable rain shell - 2 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 36 mph.
- If your dates are flexible, avoid February, March and May - historically the least comfortable months here.
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.
Right now it is 69°F (21°C) in Tonga with overcast. It feels like 63°F. Today runs from 66°F to 71°F. Chance of precipitation is 13%. Sightseeing conditions score 8.8/10 - excellent - go now.
The best time to visit Tonga is April, June, July, August 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.
In plain terms. Today is slightly cooler than average for August. The forecast high of 71°F is 4°F below the 75°F typical for this month. The best window to be outside is roughly 2 PM to 5 PM, when temperature, rain chance and wind line up best. sightseeing is the strongest bet in Tonga today at 8.8/10. Gusts to 36 mph will push high-sided vehicles on exposed roads and bridges.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Quick facts about Tonga
| Type | Country |
|---|---|
| Continent | Oceania |
| Continent | Oceania |
| Coordinates | 21°8′21.5″S 175°12′17.6″W (-21.1393, -175.2049) |
| Capital | Nuku'alofa |
| Population | 105.000 |
| Area | 288 sq mi |
| ISO code | TO |
| ISO 3166-1 alpha-3 | TON |
| Currency | Tongan pa'anga (TOP) |
| Languages | Tongan, English |
| Calling code | +676 |
| Time zone | Pacific/Tongatapu |
| Local time | 8:06 PM (UTC+13:00) |
| Best months | April, June, July, August and September |
| Climate | Tropical |
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.
Explore Tonga
Every topic we hold for this place, and the same topic for the places around it.
Climate 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 69°F (21°C) with overcast. Humidity is 56% and wind is 15 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 8:06 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 21, 2026 at 8:06 PM local time. Live blocks refresh every 15 minutes; climate averages monthly.
