Last updated: July 2, 2025
In Chiang Khan, Thailand, staying aware of the UV Index is crucial for safeguarding your skin against harmful ultraviolet radiation. With UV levels peaking at a staggering 14 around midday, understanding these fluctuations can help prevent sunburn and promote overall skin health. This charming riverside town, typical of the Aw climate zone, experiences significant sunlight exposure throughout the year, making it essential for residents and tourists alike to track UV levels. By knowing when to seek shade or apply sunscreen, you can enjoy the rich culture and natural beauty of Chiang Khan while protecting your most valuable asset—your skin.
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 |
As the seasons change, so do the UV levels, significantly impacting both visitors and residents. From January to March, the UV Index starts high at 9 and peaks at 13 in March and April, classified as extreme, with a burn time of only 10 minutes during these months. The UV exposure remains extraordinarily high throughout the summer months of May to September, consistently at 14, and continues to require caution with a burn time of just 10 minutes. October sees a decline to 12, but remains in the extreme range. November and December drop to levels of 10 and 8, classified as very high, but still demand attention, with burn times extending to 15 minutes. Residents and visitors should exercise caution, particularly during the high-risk months of February through September, by wearing protective clothing, applying sunscreen regularly, and seeking shade during peak hours to minimize UV exposure and prevent 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 |
| Chiang Khan | 9 | 12 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 12 | 10 | 8 |
| Chon Buri UVI | 10 | 13 | 14 | 14 | 14 | 13 | 14 | 14 | 13 | 13 | 10 | 9 |