UV Index
UV Index
Today's UV index in Seoul, South Korea 
will be up to 8, 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: 2025-05-21
With a UV index of 8 in Seoul, 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.
Seoul's UV index varies through the year, peaking around 8-11 during the summer, which means strong sunlight, and dropping to 1-3 in winter, indicating weak ultraviolet rays. The city experiences four distinct seasons: cold, dry winters with temperatures often below freezing; hot, humid summers with heavy rain from monsoons; mild springs with blooming flowers; and cool, colorful autumns. Compared to nearby cities like Tokyo or Beijing, Seoul has colder winters and similar hot summers, with more rainfall during summer than inland areas but less than coastal regions of South Korea.
See the UV index hour by hour for Seoul, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.