Last updated: July 2, 2025
Awareness of the UV Index is crucial for residents and visitors in Prachuap Khiri Khan, Thailand, where the tropical climate often leads to high sun exposure. Understanding UV levels can significantly impact your skin health and help prevent painful sunburns. With a maximum UV Index peaking at 14 during midday, it’s essential to recognize the risks associated with prolonged sun exposure in this sun-soaked region. Given the typical weather patterns, Prachuap Khiri Khan presents both beauty and challenges, making it vital to stay informed about ultraviolet radiation to protect your skin and enjoy the vibrant outdoors safely.
The UV Index chart reveals a dynamic day of sun exposure, starting from a low of 1 at 07:00, where early risers enjoy gentle rays. As the day progresses, the intensity increases sharply, peaking at a striking 14 between 12:00 and 13:00, marking the time for the highest risk of harm from unprotected sun exposure. By 11:00, the index hits 12, indicating serious sunburn risk for those outdoors. The afternoon sees a gradual decline, with values dropping to 8 by 15:00 and continuing down to 0 by 19:00, signaling a safe retreat from the sun’s rays. For those venturing out, sunscreen is highly recommended during peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 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 | 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 |
Throughout the year, the UV Index in this region remains extremely high, particularly from January to October, with values peaking at 15 in March. The high-risk months are consistently from January to October, where the burn time is a mere 10 minutes, underscoring the urgent need for sun protection. Even as the year transitions into November and December, the UV Index remains notably elevated, with November at 11 and December slightly lower at 10; however, exposure risk remains significant, especially in November. It is crucial for both visitors and residents to prioritize sun safety measures, including wearing sunscreen, protective clothing, and seeking shade during peak sun hours, to prevent harmful UV exposure and skin damage year-round.
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 |
| Prachuap Khiri Khan | 11 | 13 | 15 | 14 | 14 | 14 | 14 | 14 | 14 | 13 | 11 | 10 |