UV Index
UV Index
Today's UV index in Phnom Penh, Cambodia 
will be up to 12.8, 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 12.8 in Phnom Penh 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.
Phnom Penh's UV index is generally high, often ranging from 8 to 11 during the dry season, indicating strong sunlight. During the rainy season, it can be lower due to cloud cover but still remains significant.
The city has two main seasons: the hot, dry season from November to April, and the wet, rainy season from May to October. Temperatures often reach 35°C or higher in the summer and stay warm even at night.
Compared to other places in Southeast Asia like Bangkok or Ho Chi Minh City, Phnom Penh has similar temperatures but more humidity in the rainy season. It usually gets more rainfall than cities to the west but less than regions in northern Cambodia.
See the UV index hour by hour for Phnom Penh, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.