Last updated: July 2, 2025
Understanding the UV Index is crucial for everyone living in or visiting Chiang Muan, Thailand, where the tropical climate brings intense sunlight year-round. As UV levels frequently rise to high categories, especially between 10 AM and 2 PM, being aware of these levels is vital to prevent sunburn and protect your skin health. A high UV Index of 14 during midday hours signals significant risks for skin damage, making it essential to plan outdoor activities accordingly. Equip yourself with this knowledge to enjoy the stunning landscapes of Chiang Muan while safeguarding your skin from harmful rays!
As the sun rises, the UV Index starts off low at 1 by 7:00 AM, gradually climbing to a moderate 3 by 8:00 AM. However, by 9:00 AM, it takes a sharp leap to 6, signaling that sun protection should be considered. The peak intensity occurs at 12:00 PM, hitting a striking 14, where the sun’s rays are most potent and precautions are essential. The afternoon sees a slight decline, dropping to 11 by 2:00 PM, before further retreating to 8 at 3:00 PM. As the day winds down, the index decreases steadily, settling at 1 by 6:00 PM and fading to 0 by 7:00 PM. This data highlights the importance of staying vigilant during peak hours to protect yourself from harmful UV exposure.
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 1 | low | 45 min |
08:00 | 3 | moderate | 30 min |
09:00 | 6 | high | 25 min |
10:00 | 10 | very high | 15 min |
11:00 | 13 | extreme | 10 min |
12:00 | 14 | extreme | 10 min |
13:00 | 14 | extreme | 10 min |
14:00 | 11 | extreme | 10 min |
15:00 | 8 | very high | 15 min |
16:00 | 4 | moderate | 30 min |
17:00 | 2 | low | 45 min |
18:00 | 1 | low | 45 min |
19:00 | 0 | low | 45 min |
The UV Index data reveals a distinct seasonal pattern, with extreme levels predominantly occurring from March to October, peaking at 14 in May, July, August, and September. High-risk months include March, April, May, July, August, September, and October, where the burn time is dramatically reduced to just 10 minutes. From January to February and in November and December, while the UV Index remains very high (ranging from 8 to 10), the burn time extends to 15 minutes. Visitors and residents are advised to take extra precautions during the spring and summer months by wearing appropriate sun protection, including sunscreen, hats, and sunglasses, and by seeking shade during peak hours to minimize the risk of skin damage.
UV Risk Categories
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chiang Muan | 9 | 10 | 13 | 13 | 14 | 13 | 14 | 14 | 14 | 13 | 10 | 8 |
Mueang Nonthaburi UVI | 10 | 12 | 14 | 13 | 14 | 13 | 14 | 14 | 13 | 12 | 9 | 8 |
Samut Prakan UVI | 10 | 12 | 14 | 13 | 14 | 13 | 14 | 14 | 13 | 12 | 9 | 8 |
Bangkok UVI | 10 | 12 | 14 | 13 | 14 | 13 | 14 | 14 | 13 | 12 | 9 | 8 |
Udon Thani UVI | 9 | 11 | 13 | 14 | 14 | 13 | 14 | 14 | 14 | 12 | 10 | 9 |
Chon Buri UVI | 10 | 13 | 14 | 14 | 14 | 13 | 14 | 14 | 13 | 13 | 10 | 9 |