UV Index
UV Index
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Today's UV index in Jacksonville, United States 
will be up to 3, indicating a moderate 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.
With a UV index reaching up to 3 in Jacksonville, 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.
The UV index in Jacksonville, United States, can reach a high of 9 during the summer months. This is considered very high and can be harmful to unprotected skin.
Jacksonville experiences four distinct seasons, but the climate is generally mild. Winter temperatures rarely drop below freezing, and summers are hot and humid with frequent thunderstorms. Spring and fall are pleasant and bring the most comfortable temperatures of the year.
Compared to its region and neighboring countries, Jacksonville's weather is relatively stable. While nearby cities in the southeast may experience hurricanes and tropical storms, Jacksonville sees less severe weather due to its location on the northeast corner of Florida. However, the city can still be affected by remnants of strong hurricanes and tropical storms passing through the area.
The chart below displays the average Shortwave Radiation Sum (MJ/m²) for each month of the last year in Jacksonville. It's designed to provide you with a better understanding of the yearly weather and sun exposure.