UV Index
UV Index
Today's UV index in Bangkok, Thailand 
will be up to 12.2, 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: 2025-05-31
UV index at 12.2 in Bangkok 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.
Bangkok's UV index is typically very high, often ranging from 8 to 12, which means the sun's rays are strong and can be intense during the day. The highest UV levels occur around midday.
Seasonally, Bangkok has a hot season from March to June with temperatures often above 35°C. The rainy season lasts from July to October with heavy, short storms. The cooler season from November to February is more comfortable and less humid.
Compared to other places in Southeast Asia, Bangkok is hotter and more humid than cities like Hanoi or Kuala Lumpur. It generally has less rainfall than tropical islands like Phuket but more than inland areas in Thailand or Laos. Neighboring countries like Cambodia and Vietnam have similar seasonal patterns but different temperature extremes.
See the UV index hour by hour for Bangkok, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.