Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors in Shemgang, Bhutan, where the unique Cwb climate brings distinct sun exposure risks. As UV levels can reach a peak of 13 during midday hours, being aware of these readings is vital for effective sunburn prevention and maintaining overall skin health. The high altitudes and clear skies of Shemgang often lead to increased UV radiation, emphasizing the need for precautions against potential skin damage. Stay informed about the UV Index to enjoy the stunning landscapes while protecting your skin from harmful rays!
The UV Index throughout the day showcases a striking pattern, peaking sharply around 11:00 AM with a notable value of 13. As the morning unfolds, the index gradually rises from 2 at 07:00 to a robust 8 by 09:00. The sun hits its zenith at 10:00, reaching 11, before climbing to the highest level of 13 at 11:00. Post-noon, the index begins to descend, tapering off to 9 by 14:00, and dropping significantly to 3 by 16:00. As evening approaches, the intensity diminishes further, ending the day with a gentle 1 at both 17:00 and 18:00, and settling at a comfortable 0 by 19:00. This clear trajectory highlights the importance of sun protection during those peak hours! ☀️
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 8 | very high | 15 min |
| 10:00 | 11 | extreme | 10 min |
| 11:00 | 13 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 3 | moderate | 30 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 0 | low | 45 min |
Throughout the year, UV index levels fluctuate significantly, indicating varying risks for sun exposure. January starts with a UV index of 6, categorized as high, with a burn time of 25 minutes. As we transition into February and March, the UV index rises to 9 and 10 respectively, both classified as very high, reducing safe exposure to 15 minutes. The high-risk months peak from April to October, where the UV index reaches 13 to 15 and falls into the extreme category, with minimal burn times of just 10 minutes. Notably, July records the highest index at 15. As we move towards late fall and winter, November decreases to 8, remaining very high, then back to 6 in December. Visitors and residents are advised to take necessary precautions during these peak months, such as wearing sunscreen, protective clothing, and sunglasses, and to minimize sun exposure, especially between 10 a.m. and 4 p.m.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Phuntsholing UVI | 5 | 7 | 9 | 10 | 11 | 13 | 14 | 13 | 12 | 10 | 8 | 6 |
| Pemagatshel UVI | 6 | 8 | 10 | 13 | 13 | 14 | 15 | 14 | 13 | 11 | 8 | 6 |
| Tsirang UVI | 6 | 9 | 10 | 12 | 13 | 14 | 15 | 14 | 13 | 11 | 8 | 6 |
| Shemgang | 6 | 9 | 10 | 13 | 13 | 14 | 15 | 14 | 13 | 11 | 8 | 6 |
| Punakha UVI | 8 | 10 | 12 | 14 | 15 | 15 | 16 | 15 | 14 | 11 | 9 | 6 |
| Thimphu UVI | 8 | 10 | 13 | 14 | 16 | 16 | 16 | 15 | 14 | 12 | 9 | 7 |