Last updated: June 2, 2025
In Salyan, Nepal, being aware of the UV Index is crucial for protecting yourself against harmful ultraviolet radiation. Understanding UV levels helps in preventing sunburn and promoting overall skin health, especially in a region where the climate typically boasts long hours of sunshine. With values peaking at 13 during midday, the risk of skin damage dramatically increases, making it essential for residents and visitors to monitor these levels closely. Amidst Salyan's Cwa climate, which brings distinct seasonal changes, knowing when to take preventive measures can safeguard your skin while enjoying the beautiful outdoors.
The UV Index (UVI) throughout the day presents a striking pattern of intensity and risk. Starting at 07:00, the index is a mild 3, but by 08:00, it surges to 6, indicating a moderate risk for harm from unprotected sun exposure. The intensity peaks dramatically at 10:00, hitting a blistering 12, and maintains a high level of 13 at both 11:00 and 12:00. As the afternoon progresses, the UVI begins to decline, dropping to 11 at 13:00 and then more notably to 8 at 14:00. By 15:00, it further decreases to 5, signaling a safer window for outdoor activities, before tapering off to 3 by 16:00. As evening approaches, the index falls to a low 1 by 17:00, remaining at this level until it hits 0 by 19:00. For sun safety, the key takeaway is to protect yourself during the peak hours of 10:00 to 14:00 when the UV intensity is most severe.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 3 | moderate | 30 min |
| 08:00 | 6 | high | 25 min |
| 09:00 | 9 | very high | 15 min |
| 10:00 | 12 | extreme | 10 min |
| 11:00 | 13 | 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, UV exposure varies significantly, with high-risk months predominantly from March to September. The UV Index peaks in July at 14, indicating an extreme exposure category, requiring cautious sun protection measures. During these months, burn times decrease significantly, with just 10 minutes of unprotected exposure potentially resulting in sunburn. Visitors and residents should prioritize sun safety by wearing protective clothing, using broad-spectrum sunscreen, and seeking shade during peak hours, especially in April and May when UV levels also reach 11 and 12. As autumn approaches, UV levels begin to decline, with more moderate exposure in November and December, making sun safety still important but less critical.
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 |
| 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 |
| Salyan | 6 | 7 | 10 | 11 | 12 | 13 | 14 | 13 | 11 | 10 | 7 | 5 |
| Pokhara UVI | 7 | 9 | 12 | 13 | 14 | 15 | 15 | 15 | 14 | 12 | 8 | 6 |