UV Index
UV Index
Today's UV index in Nuku'alofa, Tonga 
will be up to 5.6, indicating a moderate level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-06-21
With a UV index reaching up to 5.6 in Nuku'alofa, stay shaded during midday when the sun is strongest; wear protective clothing, a wide-brimmed hat, UV-blocking sunglasses; apply SPF 30+ sunscreen every 2 hours, even on cloudy days; and be cautious of heightened UV on bright surfaces.
Nuku'alofa experiences a UV index that can reach very high levels, especially during the summer months, often between 10 and 12. This means the sun’s rays are quite strong there. The UV index usually lowers during the cooler months but can still be moderately high.
The weather in Nuku'alofa is warm all year round, with a wet season from November to April bringing heavy rain and storms. The dry season, from May to October, is cooler and less rainy, making it more comfortable. Temperatures stay mostly between 23°C and 31°C throughout the year.
Compared to other places in the South Pacific, Nuku'alofa is warmer and wetter than many nearby islands. Its climate is more tropical than New Zealand, which is cooler, and somewhat similar to Fiji, but Tonga often gets more storms during wet season. Neighboring countries like Samoa have similar weather patterns but can vary in rainfall amounts.
See the UV index hour by hour for Nuku'alofa, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.