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When to go · Climate guide
Tongawhen to go
Tonga's national averages run from 24 °C in August to 27 °C in February, with rainfall between 93 mm in July and 312 mm in February and 5.2–8.0 hours of sun a day. Against the default preferences (under 2.7 mm of rain a day, at least 6 hours of sun), the strongest months are June, July and August. Its 5 regions span 25–27 °C in annual mean temperature, so the national figure hides a good deal.
- Capital
- Nuku'alofa
- Region
- Oceania
- TZ
- Pacific/Tongatapu
- Area
- 430 km²
Best months to visit
When Tonga shines
Climate at a glance · 10-year ERA5
A decade of weather, in one page
— daytime high— overnight low▬ typical range
View data table
| Month | Average daytime high (°C) | Average overnight low (°C) | Typical low | Typical high |
|---|---|---|---|---|
| January | 27.1 | 25.8 | 24.8 | 28.1 |
| February | 27.4 | 26.1 | 24.9 | 28.3 |
| March | 27.1 | 25.8 | 24.7 | 28.1 |
| April | 26.6 | 25.4 | 24.3 | 27.6 |
| May | 25.5 | 24.4 | 23.0 | 26.8 |
| June | 24.7 | 23.6 | 22.1 | 26.0 |
| July | 23.8 | 22.8 | 21.2 | 25.1 |
| August | 23.5 | 22.4 | 20.9 | 24.9 |
| September | 23.7 | 22.7 | 21.0 | 25.2 |
| October | 24.4 | 23.3 | 21.9 | 25.5 |
| November | 25.4 | 24.3 | 22.8 | 26.7 |
| December | 26.4 | 25.2 | 24.0 | 27.4 |
View data table
| Month | Rainfall (mm) |
|---|---|
| January | 287 |
| February | 312 |
| March | 312 |
| April | 194 |
| May | 160 |
| June | 118 |
| July | 93 |
| August | 103 |
| September | 94 |
| October | 157 |
| November | 139 |
| December | 183 |
View data table
| Month | Sunshine hours (hr / day) |
|---|---|
| January | 7.3 |
| February | 6.4 |
| March | 5.9 |
| April | 6.3 |
| May | 5.6 |
| June | 5.2 |
| July | 5.5 |
| August | 5.6 |
| September | 6.6 |
| October | 6.9 |
| November | 8.0 |
| December | 7.9 |
— average▬ typical range
View data table
| Month | Average wind speed (km/h) | Typical low | Typical high |
|---|---|---|---|
| January | 21.1 | 9.6 | 35.2 |
| February | 24.7 | 11.4 | 40.6 |
| March | 21.1 | 10.6 | 32.3 |
| April | 24.8 | 11.8 | 39.8 |
| May | 25.8 | 12.9 | 43.5 |
| June | 24.7 | 12.6 | 39.6 |
| July | 25.7 | 12.8 | 39.1 |
| August | 24.9 | 12.8 | 37.3 |
| September | 25.4 | 11.7 | 39.4 |
| October | 26.3 | 13.4 | 40.3 |
| November | 23.1 | 10.4 | 36.5 |
| December | 22.6 | 10.6 | 36.3 |
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Heat index
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Humidity
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What’s open · year round
Things to do in Tonga
Nothing on this list closes for the season in Tonga, but every one of them has a window worth aiming for.
- LimitedIsland and beach travel
Limited January–March · at its best May–October
Sources: responsibletravel.com, taketravelinfo.com
- At its best
Opening seasons are checked by hand against the operators and parks themselves, not derived from the climate figures on this page. Last reviewed 2026-08-28. Dates move — confirm before you book.
5 regions
Tonga, taken apart
Safety · 4 governments
What the governments say about Tonga
Combined advisory · most-cautious-wins
Exercise normal precautions
Highest level across 4 governments · Advisory last changed
See breakdown by countryHide breakdown
DE
Level 1Exercise normal precautions
Exercise normal precautions
NL
Level 1Exercise normal precautions
Exercise normal precautions
US
Level 1Exercise normal precautions
Exercise normal precautions
Month by month
A year in Tonga, in order
- JanJanuary27.1°C · 287 mm · 7.3 hr/day
Around 27 °C with 287 mm of rain and 7.3 hours of sun a day.
Around 27 °C with 287 mm of rain and 7.3 hours of sun a day.
- FebFebruary27.4°C · 312 mm · 6.4 hr/day
Around 27 °C with 312 mm of rain and 6.4 hours of sun a day.
Around 27 °C with 312 mm of rain and 6.4 hours of sun a day.
- MarMarch27.1°C · 312 mm · 5.9 hr/day
Around 27 °C with 312 mm of rain and 5.9 hours of sun a day.
Around 27 °C with 312 mm of rain and 5.9 hours of sun a day.
- AprApril26.6°C · 194 mm · 6.3 hr/day
Around 27 °C with 194 mm of rain and 6.3 hours of sun a day.
Around 27 °C with 194 mm of rain and 6.3 hours of sun a day.
- MayMay25.5°C · 160 mm · 5.6 hr/day
Around 26 °C with 160 mm of rain and 5.6 hours of sun a day.
Around 26 °C with 160 mm of rain and 5.6 hours of sun a day.
- JunJune24.7°C · 118 mm · 5.2 hr/day
Around 25 °C with 118 mm of rain and 5.2 hours of sun a day.
Around 25 °C with 118 mm of rain and 5.2 hours of sun a day.
- JulJuly23.8°C · 93 mm · 5.5 hr/day
Around 24 °C with 93 mm of rain and 5.5 hours of sun a day.
Around 24 °C with 93 mm of rain and 5.5 hours of sun a day.
- AugAugust23.5°C · 103 mm · 5.6 hr/day
Around 24 °C with 103 mm of rain and 5.6 hours of sun a day.
Around 24 °C with 103 mm of rain and 5.6 hours of sun a day.
- SepSeptember23.7°C · 94 mm · 6.6 hr/day
Around 24 °C with 94 mm of rain and 6.6 hours of sun a day.
Around 24 °C with 94 mm of rain and 6.6 hours of sun a day.
- OctOctober24.4°C · 157 mm · 6.9 hr/day
Around 24 °C with 157 mm of rain and 6.9 hours of sun a day.
Around 24 °C with 157 mm of rain and 6.9 hours of sun a day.
- NovNovember25.4°C · 139 mm · 8.0 hr/day
Around 25 °C with 139 mm of rain and 8.0 hours of sun a day.
Around 25 °C with 139 mm of rain and 8.0 hours of sun a day.
- DecDecember26.4°C · 183 mm · 7.9 hr/day
Around 26 °C with 183 mm of rain and 7.9 hours of sun a day.
Around 26 °C with 183 mm of rain and 7.9 hours of sun a day.
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