UV Index
UV Index
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Today's UV index in Nuku'alofa, Tonga 
will be up to 12.9, indicating a extreme level of sun exposure for the average person. Check the annual sun radiation in the city and our tips for today to make sure you're safe in the sun.
UV index at 12.9 in Nuku'alofa means extreme risk; limit outdoor time from 10 a.m. to 4 p.m., use shade, protective clothing, SPF 30+ sunscreen, and sunglasses; watch for bright surfaces like water and snow increasing UV exposure.
The UV index in Nuku'alofa, Tonga is often very high due to its tropical location near the equator. It can reach extreme levels during peak sunlight hours, so it's typically quite intense.
Nuku'alofa has two main seasons: a wet season from November to April and a dry season from May to October. The wet season is warm and humid with regular rainfall, while the dry season is cooler and less humid.
Compared to its region and neighboring countries, Nuku'alofa's weather is generally similar, being tropical and monsoonal. However, Tonga's islands offer more protection from strong winds than some other Pacific islands, leading to slightly milder conditions.
The chart below displays the average Shortwave Radiation Sum (MJ/m²) for each month of the last year in Nuku'alofa. It's designed to provide you with a better understanding of the yearly weather and sun exposure.