Last updated: July 2, 2025
In the picturesque Mae Chai, Thailand, understanding the UV Index is crucial for maintaining optimal skin health and preventing sunburn. With its tropical climate and frequent high levels of ultraviolet radiation, awareness of UV levels can help residents and visitors take proactive steps to protect themselves from harmful effects. Throughout the day, the UV Index in Mae Chai peaks significantly, reaching levels that warrant caution—especially between 11:00 AM and 2:00 PM. By knowing when to seek shade or apply sunscreen, you can enjoy the vibrant outdoor lifestyle without compromising your skin’s well-being.
The UV Index today showcases a dramatic rise as the sun ascends, starting at a mild 1 at 7:00 AM. By 9:00 AM, it ramps up to 6, hitting 9 by 10:00 AM. The intensity peaks around 12:00 PM with a scorching 14, persisting until 1:00 PM. As the afternoon progresses, the UV Index begins to decline, dropping to 11 by 2:00 PM, then down to 8 at 3:00 PM. By late afternoon, it falls further to 5 at 4:00 PM, and the day winds down with a gentle 2 at 5:00 PM, before cooling off to 1 at 6:00 PM and finally dropping to 0 by 7:00 PM. Remember, mid-day hours are when protection from UV rays is most crucial!
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 | 9 | 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 | 5 | moderate | 30 min |
17:00 | 2 | low | 45 min |
18:00 | 1 | low | 45 min |
19:00 | 0 | low | 45 min |
During the year, UV Index levels peak from March to October, with an extreme classification of 12-14 indicating significant risk for harm from unprotected sun exposure. The high-risk months of April through October should be approached with caution, as the burn time drops to just 10 minutes in these periods. Visitors and residents are advised to protect themselves by wearing sunscreen, appropriate clothing, and seeking shade during peak hours, especially from late morning to mid-afternoon when UV intensity is at its highest. Even in November and December, although the UV Index is lower, with values of 10 and 8 respectively, it remains important to exercise sun safety.
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 |
Mae Chai | 9 | 10 | 12 | 13 | 14 | 14 | 14 | 14 | 14 | 13 | 10 | 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 |