Last updated: July 2, 2025
Being aware of the UV Index is crucial for residents and visitors of Sattahip, Thailand, where the tropical climate brings intense sunlight and heightened exposure risks. Understanding UV levels is essential not just for preventing painful sunburns but also for maintaining long-term skin health. With UV Index values soaring as high as 14 during midday, protecting your skin is more important than ever. Whether you’re lounging on the beautiful beaches or exploring the local scenery, staying informed about the UV Index can help you enjoy the vibrant outdoor lifestyle while minimizing health risks associated with overexposure.
From the early hours of the day, the UV Index begins at a modest 1 at 7:00 AM, increasing gradually as the sun climbs higher in the sky. By 8:00 AM, it rises to 3, and then sharply escalates to 6 by 9:00 AM. The peak intensity occurs at 12:00 PM, where the UV Index reaches a striking 14. From there, it maintains a high level for another hour before gradually declining: 11 at 2:00 PM, diminishing to 7 by 3:00 PM and further down to 4 at 4:00 PM. As the evening approaches, the UV Index drops to 2 at 5:00 PM, finally tapering off to 0 by 7:00 PM, signaling the end of a day characterized by significant UV radiation exposure. It’s crucial to protect your skin during peak hours, especially between 11:00 AM and 1:00 PM when the UV Index reaches its maximum!
| 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 | 12 | extreme | 10 min |
| 12:00 | 14 | extreme | 10 min |
| 13:00 | 14 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 7 | high | 25 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 experiences significant seasonal variation, peaking during the months of March through October, where it consistently reaches 14 in many months, indicating an extreme exposure category with a burn time of just 10 minutes. January and November present very high conditions with indices of 10 and a burn time of 15 minutes, while December shows a slightly lower index of 9. Given this data, visitors and residents should be particularly vigilant from February through October, as these months carry the highest risk for UV exposure. It is advisable to take protective measures such as wearing sunscreen, protective clothing, and seeking shade, especially during midday hours, to reduce the risk of sunburn and long-term 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 |
| Sattahip | 10 | 13 | 14 | 14 | 14 | 13 | 14 | 14 | 14 | 13 | 10 | 9 |