UV Index
UV Index
Today's UV index in St. James, Vietnam 
will be up to 11.7, 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: 2025-05-09
UV index at 11.7 in St. James 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 St. James, Vietnam, can be very high, especially during the sunny months, often reaching levels of 8 to 11, which means strong sun exposure is common. The area experiences a tropical monsoon climate with hot, wet summers and cooler, dry winters. Rainfall is heaviest from May to October, while November to April tends to be drier and more comfortable. Compared to nearby regions, St. James has a similar climate to coastal areas of northern Vietnam but may be slightly cooler than southern parts of the country. Neighboring countries like Laos and Cambodia also share similar monsoon patterns but with some variation in temperature and rainfall timing.
See the UV index hour by hour for St. James, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.