Tonga in Winter
In winter (December, January and February), Tonga sees average daytime highs around 31°C and overnight lows near 19°C, with 35 mm of rain over about 10 wet days across the season. It is the warmest season of the year and the driest season of the year.
Over the season highs climb from about 29°C in early December to 32°C by late February. The sky is clear or mostly clear about 33% of the time across winter, and the air most often feels humid.
Winter is Tonga's best season of the year to visit on our travel score. For the whole year in context, see Tonga's year-round climate.
- Avg daytime high
- 31°C
- warmest season of the year
- Avg overnight low
- 19°C
- Rainfall
- 35 mm
- 10 wet days
- Avg wind
- 7 km/h
- Travel score
- 5.0
- best season of the year
- Months
- Dec · Jan · Feb
Temperature in Tonga in Winter
Over the season highs climb from about 29°C in early December to 32°C by late February.
A typical winter day in Tonga reaches about 31°C and drops to 19°C overnight. The warmest of the three months is February, the coolest December.
How winter really feels in Tonga
Once humidity and wind are folded in, winter brings about 36 days that feel above 32°C and 0 that feel at or below 0°C.
The story in winter is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Tonga weather by month
How the three winter months (December, January and February) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 31° / 19° | 8 | 2.5 | 11.7 | 5.0 |
| Feb | 32° / 20° | 18 | 4.8 | 11.8 | 4.2 |
| Mar | 31° / 20° | 70 | 15.5 | 12 | 3.8 |
| Apr | 29° / 20° | 133 | 22.4 | 12.1 | 3.6 |
| May | 28° / 20° | 147 | 25.4 | 12.2 | 3.8 |
| Jun | 27° / 20° | 140 | 25.7 | 12.3 | 4.0 |
| Jul | 26° / 19° | 142 | 25.6 | 12.3 | 4.2 |
| Aug | 25° / 19° | 171 | 26.2 | 12.2 | 4.1 |
| Sep | 26° / 19° | 207 | 27.9 | 12 | 3.7 |
| Oct | 27° / 19° | 200 | 28.4 | 11.9 | 3.7 |
| Nov | 28° / 19° | 70 | 13.9 | 11.8 | 5.1 |
| Dec | 30° / 19° | 10 | 2.5 | 11.7 | 5.8 |
Cloud cover in Winter
The sky is clear or mostly clear about 33% of the time across winter.
Chance of precipitation in Winter
Tonga gets around 35 mm of rain over 10 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 7 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 11 h 42 min in early December to 11 h 54 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 5.8 kWh/m².
Hazard calendar for Tonga
In winter, Tonga overlaps its dust season. The full year is below, with each hazard's peak months called out.
Tonga's rainy season runs April–October, when most of the year's rain falls.
Tonga sees seasonal dust haze (February–April), heaviest in February.
Is winter a good time to visit Tonga?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter is a reasonable time to visit Tonga for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Tonga in Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Tonga sees daytime highs around 31°C and nights near 19°C. Pack light clothes and sun protection. About 10 days see rain.
UV index in Tonga in Winter
Clear-sky midday UV across winter averages around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Tonga peaks around April 10 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 9 (very high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 10 | 11 | 14 | 14 | 13 | 11 | 11 | 12 | 13 | 13 | 11 | 9 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 10 | Very high |
| Feb | 11 | Extreme |
| Mar | 14 | Extreme |
| Apr | 14 | Extreme |
| May | 13 | Extreme |
| Jun | 11 | Extreme |
| Jul | 11 | Extreme |
| Aug | 12 | Extreme |
| Sep | 13 | Extreme |
| Oct | 13 | Extreme |
| Nov | 11 | Extreme |
| Dec | 9 | Very high |
Air quality in Tonga in Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter falls, not just the annual average.
Air quality in Tonga is worst in February — around 109 µg/m³ PM2.5 (unhealthy), about 4.9× the cleanest month (August, 22 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 85 | 109 | 71 | 54 | 34 | 28 | 23 | 22 | 24 | 35 | 44 | 71 |
| Level | Unhealthy | Unhealthy | Unhealthy | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Poor | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 85 | Unhealthy |
| Feb | 109 | Unhealthy |
| Mar | 71 | Unhealthy |
| Apr | 54 | Poor |
| May | 34 | Moderate |
| Jun | 28 | Moderate |
| Jul | 23 | Moderate |
| Aug | 22 | Moderate |
| Sep | 24 | Moderate |
| Oct | 35 | Moderate |
| Nov | 44 | Poor |
| Dec | 71 | Unhealthy |
Where is Tonga?
Tonga sits at 5.0°N, 10.7°E, 809 m above sea level, in Cameroon. The nearest listed city is Bangangté, 27 km away.
Topography around Tonga
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Tonga.
Within 3 km, the terrain around Tonga has only modest variations in elevation — a maximum elevation change of 178 m around an average of 795 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,087 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,002 m.
The land around Tonga is covered by trees (63%) and grassland (30%) within 3 km, trees (78%) and grassland (20%) within 16 km, and trees (80%) within 80 km.
Cameroon travel facts
- Travel advisory
- Level 2
- Exercise Increased Caution
- Power plugs
- Type C / E
- 220 V · 50 Hz
- Prices
- ≈ 34% of US
- price level, 2025
- GDP per capita
- $1,972
- 2025
- Happiness
- 5.1 / 10
- World Happiness, 2025
- Homicide rate
- 6.8
- per 100k, 2022
- Road deaths
- 30.2
- per 100k/yr, 2019
- Income group
- Lower middle
- World Bank
- English
- Very low
- EF EPI 445
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Tonga (4.9667°, 10.7°, elevation 809 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google.