Last updated: June 2, 2025
In Rajbiraj, Nepal, awareness of the UV Index is crucial for protecting your skin from harmful ultraviolet radiation. With UV levels peaking at 11 around midday, understanding these fluctuations can help prevent sunburn and long-term skin health issues. Nestled in a Cwa climate zone, Rajbiraj experiences intense sunlight, particularly during the dry season, making it essential for residents and visitors alike to stay informed about daily UV exposure risks. By monitoring the UV Index, you can enjoy the beautiful outdoors while taking the necessary precautions to safeguard your skin.
As the sun rises, the UV Index begins to climb. At 7:00 AM, it starts at a moderate level of 3, but by 8:00 AM, it jumps to a more noticeable 5. Things heat up significantly by 9:00 AM, reaching 8, and by 10:00 AM, it peaks at an intense 10. The maximum intensity occurs at 11:00 AM with an impressive 11, warning outdoor enthusiasts to take precautions. Gradually, from 12:00 PM to 2:00 PM, the index dips to 10 and then 6 as the afternoon progresses. By 3:00 PM, it further reduces to 3, and as the sun begins to set, the index drops to 2 at 4:00 PM, 1 at 5:00 PM, and finally to 0 by 6:00 PM, revealing a clear transition from peak UV exposure to safe levels as day turns to night. Remember to stay protected during those peak hours!
| 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 | 10 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 6 | high | 25 min |
| 15:00 | 3 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
During the year, UV exposure varies significantly, with peaks in the summer months. High-risk months for UV exposure include June through September, when the UV Index reaches extreme levels (11 to 13), with dangerously short burn times of just 10 minutes. Additionally, March and April also present high risk with very high UV levels (8 to 10), demanding vigilance. Visitors and residents are strongly advised to protect themselves by seeking shade, wearing protective clothing, and applying sunscreen regularly, especially during these peak months. In contrast, the winter months of January and December show a moderate risk, with longer burn times of 30 minutes, allowing for safer outdoor activities if precautionary measures are still taken.
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 |
| Birganj UVI | 5 | 6 | 8 | 10 | 10 | 12 | 13 | 12 | 11 | 9 | 7 | 5 |
| Rajbiraj | 5 | 6 | 8 | 10 | 10 | 11 | 13 | 12 | 12 | 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 |