UV Index
UV Index
Today's UV index in Sanya, China 
will be up to 12.6, indicating a extreme level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-06-01
UV index at 12.6 in Sanya means extreme risk: limit outdoor time especially from 10 a.m. to 4 p.m., actively seek shade, wear protective clothing, broad-brimmed hat, apply SPF 30+ sunscreen every 2 hours, and wear UV-blocking sunglasses. Watch for bright surfaces like water and snow increasing UV exposure.
The UV index in Sanya, China, is generally high throughout the year, often reaching levels of 8 to 11 during summer months, indicating strong ultraviolet radiation from the sun.
Sanya has a tropical climate with warm temperatures year-round. It experiences a wet season from May to October with heavy rainfall and a dry season from November to April with less rain and lots of sunshine.
Compared to much of China, Sanya is warmer and more humid due to its coastal location. It is sunnier and less cold than northern cities and is similar in climate to tropical areas in Southeast Asia like Thailand and Vietnam.
See the UV index hour by hour for Sanya, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.