UV Index
UV Index
Today's UV index in St. Petersburg, United States 
will be up to 9.9, indicating a very high level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-05-09
With a UV index of 9.9 in St. Petersburg, 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.
St. Petersburg, Florida, has a UV index that often ranges from moderate to very high, especially in summer months when the sun is strongest. The UV index can reach levels above 8, indicating strong sunlight exposure.
The city experiences hot, humid summers with frequent afternoon thunderstorms and mild, dry winters. Rainfall is mostly concentrated from June to September, while winter months are usually sunny and cooler compared to summer.
Compared to the wider southeastern US, St. Petersburg is warmer and sunnier. It receives more sunshine than nearby cities like Tampa and Orlando, and its winter temperatures are generally milder than inland areas or northern states.
See the UV index hour by hour for St. Petersburg, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.