Last updated: July 2, 2025
In Birendranagar, Nepal, being aware of the UV Index is essential for safeguarding your skin and overall health. Understanding UV levels can significantly help in preventing sunburn and minimizing long-term skin damage, particularly in a region where sunlight is intense and temperatures can be high. With a Cwa climate that brings substantial daylight, Birendranagar experiences peak UV levels around midday, soaring to a maximum of 13 between noon and 1 PM. This highlights the importance of taking protective measures during outdoor activities to stay safe from harmful UV radiation and maintain healthy skin.
The UV Index throughout the day showcases a dynamic range, with the morning starting at a modest 2 by 7:00 AM, warming up to 5 by 8:00 AM. By 9:00 AM, it escalates to a noticeable 8, peaking sharply at 11 with a striking 13 at noon—a time when sun protection becomes essential. As the afternoon progresses, the intensity begins to wane, dipping to 11 at 1:00 PM and descending further to 8 by 2:00 PM. The late afternoon sees a gentle decline, with values falling to 5 at 3:00 PM and diminishing further to 3 at 4:00 PM. As the sun sets, the index dwindles to 1 by 5:00 PM, before finally reaching 0 by 7:00 PM. This data underscores the importance of sun safety measures during the peak hours between 10:00 AM and 2:00 PM, 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 | 11 | extreme | 10 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 5 | moderate | 30 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, the UV Index presents significant seasonal variations, with peak levels occurring in the summer months. From March to August, UV exposure is particularly high, notably reaching an extreme level of 12-13 during June and July, where the burn time is as short as 10 minutes. The high-risk months for UV exposure are April through August, making it crucial for visitors and residents to take necessary precautions during this period. To minimize skin damage, it is advisable to seek shade, wear protective clothing, and apply sunscreen regularly, especially during peak hours. As the year progresses into September to November, UV levels decrease, yet remain moderate to high in January and December, where a burn time of 30 minutes is noted. Regardless of the month, being mindful of UV exposure is essential for maintaining skin health year-round.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Birendranagar | 5 | 6 | 9 | 10 | 10 | 12 | 13 | 12 | 10 | 9 | 6 | 5 |
| Biratnagar UVI | 5 | 6 | 8 | 9 | 10 | 11 | 13 | 12 | 12 | 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 |