Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors in Na Dun, Thailand, where sun exposure can pose significant risks throughout the day. Awareness of UV levels helps prevent sunburn and promotes long-term skin health, especially given the region's tropical Aw climate, characterized by high temperatures and intense sunlight. As the sun climbs higher, the UV Index can soar to dangerous levels—peaking at 15 around noon—making it essential to stay informed and take appropriate sun safety measures to protect yourself from harmful rays.
As the sun rises on a new day, the UV Index begins at a modest 1 at 7:00 AM, gradually climbing to reach its peak of 15 by 12:00 PM. The hours between 9:00 AM and 1:00 PM showcase the sun's intensity, highlighted by a significant spike to 11 at 10:00 AM and 14 at 11:00 AM. However, by the afternoon, the radiation starts to wane, dropping to 6 at 3:00 PM, and then tapering off significantly as evening approaches. By 6:00 PM, the UV Index returns to a safe level of 1, and by 7:00 PM, it settles at 0, signaling the end of peak solar radiation for the day. Remember, during those peak hours, it’s essential to protect your skin!
Time | UVI | Category | Time to Burn |
---|---|---|---|
07:00 | 1 | low | 45 min |
08:00 | 4 | moderate | 30 min |
09:00 | 7 | high | 25 min |
10:00 | 11 | extreme | 10 min |
11:00 | 14 | extreme | 10 min |
12:00 | 15 | extreme | 10 min |
13:00 | 13 | extreme | 10 min |
14:00 | 10 | very high | 15 min |
15:00 | 6 | high | 25 min |
16:00 | 3 | moderate | 30 min |
17:00 | 1 | low | 45 min |
18:00 | 1 | low | 45 min |
19:00 | 0 | low | 45 min |
Throughout the year, UV Index levels significantly fluctuate, with the highest risk occurring from February to October, where values consistently reach extreme levels (UV Index 13-15) and a burn time as short as 10 minutes. March and May represent peaks, with a UV Index of 15, signaling critical sun exposure concerns. In contrast, January, November, and December exhibit very high levels but allow for longer burn times (15 minutes). Visitors and residents are advised to take precautionary measures during the high-risk months—wearing protective clothing, applying sunscreen regularly, and seeking shade during peak hours to minimize skin damage.
UV Risk Categories
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
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 |
Na Dun | 10 | 13 | 15 | 14 | 15 | 13 | 14 | 14 | 14 | 12 | 10 | 9 |