Last updated: May 3, 2025
Understanding the UV Index is crucial for residents of Hetauda, Nepal, where the sun's rays can be intense, especially during peak hours. With a climate characterized by a Cwa zone, Hetauda experiences varying UV levels throughout the day, peaking at 11 from 11:00 to 12:00, which significantly increases the risk of sunburn and long-term skin damage. By being aware of the UV Index, locals can take necessary precautions to protect their skin health, ensuring a safe and enjoyable outdoor experience in this vibrant region.
The UV Index data paints a clear picture of the day's sun intensity. Starting with a moderate value of 3 at 7:00 AM, the index quickly ramps up, reaching a peak of 11 between 11:00 AM and 12:00 PM, indicating the highest risk of harm from unprotected sun exposure. As the afternoon progresses, it gently declines to 9 at 1:00 PM and then steadily decreases, winding down to 3 by 3:00 PM. Post-sunset, the index drops to 0 by 6:00 PM, signaling a safe time to enjoy the evening outdoors. This hourly fluctuation highlights the importance of sun protection during 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 | 11 | extreme | 10 min |
| 13:00 | 9 | 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 |
The UV Index displays a clear seasonal pattern, with levels peaking during the summer months of June, July, and August, where the index reaches an extreme 13. From March to September, UV levels are notably high, with March and April marking a transition into the very high category. May to September pose the highest risk for sunburn, with burn times decreasing significantly to just 10 minutes in June through September. Visitors and residents should exercise caution, particularly during March to September, when UV exposure is at its most intense. It is crucial to wear protective clothing, use sunscreen, and seek shade when outdoors, especially during peak hours. As the year transitions into October, the index begins to decline, promoting safer conditions for outdoor activities, though vigilance remains essential into the fall and winter months where UV levels are moderate.
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 |
| Hetauda | 5 | 6 | 9 | 10 | 11 | 13 | 13 | 13 | 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 |