Is the weather good in Tonga in December 2025?
For the past few decades, the average daily temperatures in Tonga during December have been around +79°F.
In Tonga the temperature rarely varies more than seven degrees between the different parts with the highest temperature +79°F in Nuku'alofa to +79°F in Nuku'alofa. So you should be able to pack for similar conditions wherever you go in the country.
Temperature, wind and humidity in December
- rainiest? Nuku'alofa, with an average of 4 mm of rain and humidity of 81%;
- warmest? Nuku'alofa, with daytime temperatures averaging +79°F;
- windiest? Nuku'alofa, with an average of 5 m/s;
- coolest? Nuku'alofa, with daytime temperatures averaging +79°F;
How good is the weather in Tonga in December?
How warm is it in Tonga during December?
This is how hot it usually is in December
- Average maximum temperature for the month: +79°F;
- Average minimum temperature for the month: +77°F;
- Highest monthly temperature: +79°F;
- Lowest monthly temperature: +75°F;
Monthly temperatures:
- Warmest: February with an average +81°F during the day;
- Coldest: July with an average +73°F of the day;
- Hottest month in hottest city: February in Nuku'alofa;
- Coldest month in coolest city: July in Nuku'alofa;
Winds in Tonga during December
December tends to offer light winds averaging 5 m/s. However, coastal cities may experience breezes during the mornings and afternoons.
Comparison between cities in December:
- Highest average wind speed: Nuku'alofa with 5 m/s;
- Lowest average wind speed: Nuku'alofa with 5 m/s;
- Windiest day of the month: Nuku'alofa with 5 m/s;
- The least windy day of the month: Nuku'alofa with 4 m/s;
Humidity and precipitation in Tonga in December
Comparison between cities in December:
- Highest average rainfall: Nuku'alofa with 129 mm;
- Lowest average rainfall: Nuku'alofa with 129 mm;
- Most number of rainy days: Nuku'alofa with 20 rainy days;
- Least number of rainy days: Nuku'alofa with 20 rainy days;
- Highest risk of rain during the day: Nuku'alofa with 65%;
- Least risk of rain during the day: Nuku'alofa with 65%;
- Highest average humidity: Nuku'alofa with 81%;
- Lowest average humidity: Nuku'alofa with 81%;
Tips for traveling to Tonga in December
Looking for some tips for traveling to the sun, snow, or whatever you're aiming for Tonga? Activities, weather, and clothing are closely linked. In addition, it's important to pack only what you really need so you don't have to worry about heavy packing or paying extra baggage fees.
Here is some advice on what to pack and what kind of activities you can do in the Tonga based on the weather that December is expected to bring. The advice applies to the country as a whole – local weather and possible activities may differ somewhat.
Pack right for December
- For light showers, an umbrella or a thin and light rain cape is usually sufficient, while more rain may require rainwear and rain boots.
- Warm - neither hot nor cool, are probably the most comfortable when you think of sunbathing. Shorts, shorter skirts or dresses, tank tops and t-shirts are the basics here. If you're going to a seaside resort, don't forget your swimwear and maybe even a snorkel, mask and flippers.
- Light winds are probably most comfortable in hot weather but is cooling in cool and cold weather. If it is hot (when the air temperature is about 30 degrees), the wind can have a warming effect. A thin, windproof jacket and long trousers help to counteract these effects.
- High humidity means that the air conducts heat to and from the skin more easily. For example, if the air is hot (above skin temperature), it will be harder to stay cool. On the other hand, if the air is cool or cold, it is more difficult to stay warm. In high humidity, the choice of clothing makes less of a difference. However, your physical activity plays a bigger role.
FAQ
What can you do outside when it's warm in Tonga?
Is December a good time to visit Tonga?
Monthly weather in Tonga
Source of the data
For this page, we’ve looked at the typical weather in Tonga, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
