UV Index
UV Index
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Today's UV index in Hamilton, New Zealand 
will be up to 10.3, indicating very high 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.
With a UV index of 10.3 in Hamilton, it's crucial to safeguard your skin from harmful UV rays. Protect yourself by minimizing sun exposure, wearing protective clothing, and applying SPF 30+ sunscreen every 2 hours.
Read more here about the climate and sun exposure in and around Hamilton.
The UV index in Hamilton typically ranges from low to extreme throughout the year. In summer (December to February), when the sun is at its highest position, the UV index can reach extreme levels of 11 or more, which means high risk of sunburn. It is important to protect yourself by wearing sunscreen, hats, and sunglasses to reduce the risk of sun damage.
Hamilton experiences four distinct seasons, with varying temperatures and weather conditions. In summer, temperatures range from 20 °C (68 °F) to 30 °C (86 °F), accompanied by occasional rain showers and sunny days. Autumn (March to May) brings cooler temperatures, averaging around 15 °C (59 °F) to 25 °C (77 °F), with more frequent rainfall. Winters (June to August) are usually mild, ranging from 10 °C (50 °F) to 15 °C (59 °F), with occasional frosts and some rainfall. Spring (September to November) sees temperatures gradually rising, ranging from 15 °C (59 °F) to 25 °C (77 °F), with moderate rainfall.
Compared to the surrounding region, Hamilton enjoys relatively higher sun exposure due to its inland location. Nearby coastal areas experience slightly cooler and windier conditions, while inland areas may have more extreme temperatures and less wind. Regardless of the location, it is crucial to be mindful of sun exposure and take necessary precautions to protect yourself from harmful UV rays throughout the year.
The chart above displays the Shortwave Radiation Sum (MJ/m²) for each day of the last year in Hamilton. It's designed to provide you with a better understanding of the yearly weather and sun exposure.