Last updated: July 2, 2025
As residents and visitors enjoy the beautiful coastal charm of Bang Saphan, Thailand, understanding the UV Index is essential for safe sun exposure. With the region's tropical climate and high levels of UV radiation, knowing the UV levels can help prevent painful sunburns and protect long-term skin health. During peak sunlight hours, especially from 10:00 AM to 1:00 PM, the UV Index can soar to dangerous levels (up to 14), making it crucial to stay informed and take necessary precautions to enjoy the sun responsibly. Whether lounging on the beach or exploring the outdoors, being aware of the UV Index will ensure a healthier and safer experience in this stunning locale.
At dawn, as the sun rises at 07:00, the UV Index is a modest 1, perfect for a leisurely morning stroll. By 08:00, it creeps up to 2, maintaining a gentle warmth. The real sunbathing begins around 09:00 with a notable jump to 5. However, it’s from 10:00 to 12:00 that the sun truly takes center stage, reaching its peak at a sizzling 14 at noon. As the afternoon unfolds, the intensity slightly wanes, dropping to 11 by 14:00 and winding down to 4 by 16:00. As the sun dips lower, the UV Index falls to 2 at 17:00 and finally retreats to 0 by 19:00, signaling the end of the day. Be sun-smart and enjoy the sunshine safely!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 5 | moderate | 30 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 14 | extreme | 10 min |
| 13:00 | 13 | 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 |
Throughout the year, the UV Index presents extreme levels from January to October, with notable peaks during March to September, where it consistently reaches 14. Visitors and residents should be particularly cautious from March to September, which are classified as high-risk months, with a burn time of just 10 minutes. In October, the UV Index slightly decreases to 13, maintaining the extreme exposure category, while November and December show a minor reduction with an index of 11 and 10, respectively. During the winter months, although the risk is lower, both months remain in the high category, suggesting vigilance is still advised. To protect against harmful UV radiation, it's crucial to wear sunscreen, seek shade, and limit sun exposure during peak hours, especially in the summer months.
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 |
| Bang Saphan | 11 | 13 | 14 | 14 | 14 | 13 | 14 | 14 | 14 | 13 | 11 | 10 |