UV Index
UV Index
Today's UV index in Seattle, United States 
will be up to 6.2, indicating a 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 Seattle's UV index reaching 6.2, protect your skin from harm by staying in shade, wearing protective clothing, and applying SPF 30+ sunscreen every 2 hours, especially between 10 a.m. and 4 p.m. when UV rays are strongest.
Seattle's UV index is generally low, often between 1 and 3, due to frequent cloud cover and its northern location. Summers can see moderate increases, sometimes reaching 5 to 6 on clearer days.
Seattle experiences mild, wet winters with lots of rain and cloudy skies. Summers are usually dry, cooler than many other US cities, with occasional sunny days. Spring and fall bring moderate temperatures and some rain.
Compared to other West Coast cities like Portland and San Francisco, Seattle is cooler and wetter with less sunshine. It gets less snow than cities inland but more rain year-round than most neighboring states like Oregon and California.
See the UV index hour by hour for Seattle, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.