Last updated: June 2, 2025
Understanding the UV Index in Tansen, Nepal, is essential for protecting your skin and overall health. With the region's Cwa climate, featuring sunny days, the UV radiation can reach dangerously high levels—peaking at 12 during midday. Awareness of UV levels becomes crucial in preventing sunburn and reducing the risk of long-term skin damage. By keeping an eye on the UV Index, residents and visitors can enjoy the beautiful outdoors while taking necessary precautions against harmful sun exposure. Whether it’s a typical sunny day or a hillside excursion, knowing the UV forecast helps safeguard your skin from the sun's intense rays.
The UV Index throughout the day presents a clear picture of sun intensity, peaking impressively at 12 between 11:00 AM and 12:00 PM. Starting from a mild 3 at 7:00 AM, the index climbs steadily to reach a striking 11 by 10:00 AM, indicating a strong need for sun protection. As the sun is at its highest, the UVI holds steady, emphasizing the importance of staying in the shade or wearing sunscreen during these hours. By 1:00 PM, it begins to taper off, dropping to 10 before significantly declining to 4 by 3:00 PM and then dipping further through the evening. The day concludes with a low 0 at 7:00 PM, signifying that after a powerful midday sun, the UV exposure becomes negligible as the day winds down.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 3 | moderate | 30 min |
| 08:00 | 5 | moderate | 30 min |
| 09:00 | 8 | very high | 15 min |
| 10:00 | 11 | extreme | 10 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 7 | high | 25 min |
| 15:00 | 4 | moderate | 30 min |
| 16:00 | 2 | low | 45 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 exhibit notable seasonal changes, indicating varying risks for sun exposure. From March to September, the UV Index reaches its peak, categorizing April to September as high-risk months with UV Index values predominantly in the very high to extreme range. Specifically, June and July present the highest risk, with UV Index levels of 12 and 13, during which the burn time reduces to just 10 minutes. Residents and visitors are strongly advised to take precautions during these months, such as seeking shade, wearing protective clothing, and applying broad-spectrum sunscreen frequently. As the year progresses towards October and November, a gradual decline in UV levels signifies a reduction in risk, yet vigilance is still essential, especially in the lingering high exposure months like February and November.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Biratnagar UVI | 5 | 6 | 8 | 9 | 10 | 11 | 13 | 12 | 12 | 9 | 7 | 5 |
| Tansen | 4 | 6 | 8 | 10 | 10 | 12 | 13 | 12 | 11 | 9 | 7 | 5 |
| Birganj UVI | 5 | 6 | 8 | 10 | 10 | 12 | 13 | 12 | 11 | 9 | 7 | 5 |
| Patan UVI | 5 | 7 | 9 | 11 | 11 | 13 | 14 | 13 | 12 | 10 | 7 | 5 |
| Kathmandu UVI | 5 | 7 | 9 | 11 | 11 | 13 | 14 | 13 | 12 | 10 | 7 | 5 |
| Pokhara UVI | 7 | 9 | 12 | 13 | 14 | 15 | 15 | 15 | 14 | 12 | 8 | 6 |