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The climate of Tonga
The current climate in Tonga features temperatures ranging from a high of 30°C to a low of 25°C throughout the year. The average yearly temperature is around 28°C. At night, temperatures in the colder months average around 19°C and in the warmer months around 24°C.
Average temperatures and precipitation
This chart shows the average monthly maximum and minimum temperatures (in degrees Celsius) and average monthly rainfall (in millimeters) for Tonga.
Temperature records
The highest temperature recorded in Tonga in recent years was 56°C in January 2014. The lowest daytime temperature recorded was 19°C in July 2014.
Rainfall amount
On average, Tonga receives 2190 mm of precipitation each year. For comparison, New York gets 1142 mm of precipitation annually.
The hurricane season in Tonga runs from November to April.
The climate in Tonga is based on weather data from Nuku‘alofa. Other spots might have different weather. You can check out all destinations in Tonga to get the full picture of the climate.
Best time to visit Tonga?
The best time to visit Tonga for mild to warm weather is April up to December. You might get some rain, but the temperatures are just right to explore Tonga.
Find affordable vacations to Tonga
Climate Table of Tonga
The climate table of Tonga shows the average temperatures, rainfall, and UV index per month. The table provides an overview of the average day and night temperatures in degrees Celsius, the total amount of rainfall in millimeters, the total snowfall in centimeters, and the UV index for each month. Rainfall is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 30 | 30 | 30 | 29 | 27 | 26 | 25 | 25 | 26 | 27 | 28 | 29 |
| Temp. min (°C) | 25 | 25 | 24 | 23 | 22 | 21 | 20 | 20 | 20 | 21 | 22 | 23 |
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| Precipitation (mm) | 256 | 322 | 311 | 247 | 160 | 144 | 119 | 138 | 101 | 114 | 122 | 156 |
| UV Index | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
Temperature charts
These charts display the average temperatures in Tonga. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Average Temperature per Month in Tonga
Yearly Temperature in Tonga
Precipitation charts
These charts show the average amount of precipitation in Tonga. Precipitation is always measured as water, even when it falls as snow or hail. The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Average Precipitation per Month in Tonga
Total Yearly Precipitation in Tonga
UV index chart
This chart shows the average UV index per month in Tonga. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Average UV Index per Month in Tonga
Weather experiences in Tonga
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Average weather in Tonga by month
Click on a month below to see detailed weather info for Tonga. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.