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UV Index in Nuku'alofa, TO

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Today's UV index in Nuku'alofa, Tonga Tonga will be up to 15, indicating extreme risk of harm from the sun's UV rays for the average person. Check our tips for today to make sure you're safe in the sun.


Today's tips

UV index at 15 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.

Nuku'alofa Weather

Read more here about the climate and sun exposure in and around Nuku'alofa.

UV Index in Nuku'alofa

The UV index in Nuku'alofa ranges from moderate to very high throughout the year. During the summertime, from November to April, the UV index can reach levels between 8 and 12, indicating very high levels of UV radiation. In the cooler months, from May to October, the UV index is generally lower, ranging between 4 and 6, which is considered to be moderate to high. It is important to protect your skin from harmful UV rays by wearing sunscreen, sunglasses, and hats, especially during the peak UV hours between 10 am and 4 pm.

Weather Seasons

UV index

Nuku'alofa experiences a tropical climate with distinct wet and dry seasons. The wet season typically occurs from November to April, characterized by high humidity, frequent rain showers, and the possibility of tropical cyclones. This period is also when temperatures are at their highest, ranging from around 24 °C (75 °F) to 31 °C (88 °F). The dry season, from May to October, brings cooler temperatures between 19 °C (66 °F) and 25 °C (77 °F) and less rainfall. This season is generally more pleasant for outdoor activities with comfortable temperatures and lower humidity.

Nuku'alofa's Climate

Compared to other regions in the Pacific, Nuku'alofa receives a relatively high amount of sun exposure due to its location in the South Pacific. It is important to note that the UV index in Nuku'alofa can be more intense compared to other locations due to its proximity to the equator. Therefore, it is crucial to take necessary precautions to protect yourself from the sun, such as wearing appropriate clothing, using sunscreen, and seeking shade during peak UV hours.

Annual Sun Radiation

The chart above displays the Shortwave Radiation Sum (MJ/m²) for each day of the last year in Nuku'alofa. It's designed to provide you with a better understanding of the yearly weather and sun exposure.


* This page's content about the UV index in Nuku'alofa (Tonga) is for educational and informational purposes only. The developers and data providers are not liable for the accuracy, reliability, or availability of the information. The information is not a substitute for professional medical advice, and the developers and data providers are not medical professionals. Seek advice from a qualified health provider for any medical concerns, and do not disregard medical advice or delay seeking it based on the information provided on this site.