Last updated: June 2, 2025
Understanding the UV Index in Janakpur, Nepal is crucial for protecting your skin and overall health from the sun's harmful effects. With maximum UV levels soaring to 11 during peak hours, awareness of these values is essential to prevent sunburn and long-term skin damage. Janakpur's Cwa climate—characterized by warm summers and mild winters—presents unique challenges when it comes to UV exposure, especially during the hotter months. By staying informed about daily UV index fluctuations, residents and visitors alike can take proactive steps to enjoy the sun safely.
The UV Index throughout the day paints a vivid picture of sun exposure risk. Starting with a moderate score of 3 at 7:00 AM, it quickly climbs to a high of 11 between 11:00 AM and 12:00 PM, marking the peak intensity of sunlight. Just before noon, the UV Index reaches its height at 10, where caution is advised for prolonged sun exposure. In the early afternoon, it begins a gradual decline, moving down to 9 by 1:00 PM and tapering off to 4 by 3:00 PM. As the evening approaches, the index diminishes further, dropping to 1 by 5:00 PM, and eventually reaching 0 after 7:00 PM, signaling a safe retreat from the sun's rays. Sun safety is paramount, especially during those prime hours when UV radiation poses the highest threat!
| 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 | 4 | 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 |
Throughout the year, UV index levels experience notable fluctuations, with high-risk months identified from March to September when the UV Index reaches very high to extreme levels. Specifically, June and July see the peak UV Index at 13, indicating an extreme risk for harm from unprotected sun exposure, with a burn time as short as 10 minutes. As spring transitions into summer, residents and visitors should take precautionary measures, particularly during these critical months. It is advisable to limit sun exposure during peak hours, wear protective clothing, apply broad-spectrum sunscreen regularly, and seek shade whenever possible to reduce the risk of skin damage. As fall approaches, the UV levels gradually decrease, allowing for safer outdoor activities in October and November, where the burn time increases to 15 and 25 minutes, respectively.
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 |
| Janakpur | 5 | 6 | 8 | 10 | 10 | 11 | 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 |