Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Lungtenzampa, Bhutan, where the unique Cwb climate can lead to varying sun exposure risks throughout the day. With UV levels peaking around midday, reaching a maximum of 16 at noon, awareness of these fluctuations is vital for preventing sunburn and maintaining skin health. As you enjoy the breathtaking landscape that Lungtenzampa offers, keeping an eye on the UV Index ensures you can safely bask in the sun’s beauty while protecting yourself from its potential harm.
As the sun rises, the UV Index begins its ascent, starting from a gentle 2 at 07:00. By 08:00, it climbs to 5, prompting a little extra sun protection as daylight beckons. The intensity picks up remarkably, reaching 8 by 09:00, and hitting its peak at 12:00 with a scorching 16. The afternoon sees a slight decline, with values of 15 at 13:00 and 12 at 14:00, reminding us to seek shade and hydration. As the day winds down, the intensity drops significantly, falling to 4 at 16:00, 2 at 17:00, and fading to 1 by 18:00, before finally resting at 0 after 19:00. These figures illustrate the importance of being sun-smart during those midday hours when UV exposure is at its highest!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 5 | moderate | 30 min |
| 09:00 | 8 | very high | 15 min |
| 10:00 | 12 | extreme | 10 min |
| 11:00 | 15 | extreme | 10 min |
| 12:00 | 16 | extreme | 10 min |
| 13:00 | 15 | extreme | 10 min |
| 14:00 | 12 | 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, UV exposure significantly varies, with the highest UV Index levels occurring from March to October. During this peak period, particularly in April, May, June, July, and August, the UV Index reaches extreme levels (14-16), requiring only 10 minutes of sun exposure before burning occurs. Visitors and residents should take extra precautions during these months, including wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade when necessary. The high-risk months are February through October, with the most critical months in April and May. As the year progresses, the UV Index gradually decreases, dropping to very high levels in November and high in December, where burn times increase to 15 and 25 minutes, respectively. Staying informed and protected is crucial for everyone's health throughout all seasons.
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 |
| Punakha UVI | 8 | 10 | 12 | 14 | 15 | 15 | 16 | 15 | 14 | 11 | 9 | 6 |
| Lungtenzampa | 8 | 10 | 13 | 14 | 16 | 16 | 16 | 15 | 14 | 12 | 9 | 7 |
| Thimphu UVI | 8 | 10 | 13 | 14 | 16 | 16 | 16 | 15 | 14 | 12 | 9 | 7 |