Last updated: July 2, 2025
Understanding the UV Index is crucial for the residents of Nepalgunj, Nepal, where the sun can be both a source of warmth and a hidden threat to skin health. With a typical climate of Cwa, characterized by hot summers and mild winters, the UV levels can reach dangerously high numbers, peaking at 12 around midday. This knowledge is essential for preventing sunburn and minimizing the long-term risks of skin damage. As UV exposure can lead to serious health issues, being informed about the daily UV Index helps you take the necessary precautions—like seeking shade or applying sunscreen—especially during the most intense hours of sunlight. Stay aware, stay protected!
The UV Index throughout the day showcases a significant fluctuation, reaching its peak during the midday hours. At 07:00, the index begins at a mild 2, gradually intensifying to a moderate 5 by 08:00. As the sun climbs higher, the index escalates sharply, hitting 7 by 09:00 and soaring to a striking 10 at 10:00. The highest point occurs at 11:00 and 12:00, maintaining a high 12, indicating a need for sun protection. After this zenith, the UV levels begin to decline, dropping to 10 by 13:00, then softly declining further to 8 at 14:00. The afternoon brings more relief, with values diminishing to 5 at 15:00 and tapering off to 2 by 16:00. As evening approaches, UV levels fall sharply to 1 at 17:00 and 18:00, before finally resting at 0 by 19:00. This data highlights the importance of applying sunscreen during the peak hours, especially between 11:00 and 12:00.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 5 | moderate | 30 min |
| 09:00 | 7 | high | 25 min |
| 10:00 | 10 | very high | 15 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 5 | 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 |
As the months progress, the UV Index experiences significant seasonal changes that pose varying levels of risk for sun exposure. January begins with a moderate level (5) but quickly escalates to high in February (6). The risk peaks notably from March to August, with March and April showing very high levels (9 and 10), before hitting an extreme index of 12 in June, July, and August. This extreme exposure continues into September, with a slight drop to very high again in October (9). The UV levels diminish in the fall and winter months, returning to moderate in November and December (5). Visitors and residents are advised to take precautions, especially during the high-risk months of March to October, ensuring proper sun protection measures, such as sunscreen, protective clothing, and seeking shade during peak hours to minimize skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nepalgunj | 5 | 6 | 9 | 10 | 10 | 12 | 12 | 11 | 11 | 9 | 5 | 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 |