UV Index
UV Index
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Today's UV index in Sydney, Australia 
will be up to 11.1, 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 11.1 in Sydney 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 Sydney can reach extreme levels during summer, making sun protection vital. In winter, the UV index is usually lower, but it can still be high on clear days.
Sydney experiences a humid subtropical climate, characterized by four distinct seasons: a hot, humid summer; a mild, damp autumn; a cool, dry winter; and a mild, wet spring. Rainfall is more common in spring and autumn.
Compared to its region and neighboring countries, Sydney is generally cooler and wetter. Nearby cities like Brisbane are warmer due to their more northerly location, while countries like New Zealand have a cooler, maritime climate due to their island geography.
The chart below displays the average Shortwave Radiation Sum (MJ/m²) for each month of the last year in Sydney. It's designed to provide you with a better understanding of the yearly weather and sun exposure.