Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors of Wiang Chai, Thailand, where the Aw climate brings about significant sun exposure. As the UV levels can escalate rapidly—reaching a peak of 14 between noon and 1 PM—awareness of these fluctuations is essential for effective sunburn prevention and maintaining long-term skin health. Being informed about the local UV Index helps you safeguard yourself against harmful rays during those intense hours, ensuring that your outdoor activities remain enjoyable and safe. Don't leave your skin's well-being to chance; keep an eye on the UV Index to protect yourself under the tropical sun!
The UV Index today offers a clear picture of solar intensity as the day unfolds. Starting with a calm 1 at 7:00 AM, the sun's rays begin to strengthen, reaching 3 by 8:00 AM. The peak intensity hits at 12:00 PM, soaring to an impressive 14, indicating a strong need for sun protection. As the afternoon progresses, it gradually decreases, dropping to 4 by 4:00 PM and winding down to 1 by 6:00 PM. By 7:00 PM, the UV Index retreats to 0, showcasing the significant daily variation in UV exposure. It's essential to stay alert during those peak hours, especially between 10:00 AM and 1:00 PM, when UV radiation poses the greatest risk!
| 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 | 10 | very high | 15 min |
| 11:00 | 13 | extreme | 10 min |
| 12:00 | 14 | extreme | 10 min |
| 13:00 | 13 | 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 demonstrates significant seasonal fluctuations, with the highest values occurring from March to October. During this period, UV Index values reach up to 14, categorizing the exposure level as extreme, which means that unprotected skin can burn in as little as 10 minutes. March, April, July, August, September, and October are particularly high-risk months for UV exposure. Conversely, high risk persists in January and February, with an index of 9 and 10, respectively, necessitating 15 minutes of burn time. To protect yourself and enjoy outdoor activities safely, residents and visitors are advised to apply broad-spectrum sunscreen, wear protective clothing, and seek shade during peak hours, especially from late morning to mid-afternoon when UV radiation is at its highest.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wiang Chai | 9 | 10 | 13 | 13 | 14 | 13 | 14 | 14 | 14 | 13 | 9 | 8 |
| 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 |