Last updated: June 2, 2025
Understanding the UV Index is crucial for everyone living in or visiting Bhaktapur, Nepal, particularly given the city’s subtropical highland climate and varied UV exposure levels throughout the day. The UV Index serves as a vital tool in raising awareness about potentially harmful ultraviolet radiation, helping individuals take proactive measures to prevent sunburn and protect their skin health. With peak UV levels soaring to a high of 14 around midday, residents and tourists alike must stay informed to enjoy the beautiful surroundings while minimizing the risk of sun-related issues. By tuning into the UV Index, you can ensure safe and enjoyable outdoor experiences in this historical treasure of the Kathmandu Valley.
As the sun rises, the UV Index begins its ascent, peaking at an exhilarating 14 around 11:00 AM—optimal time for sunscreen application! From a moderate 3 at 7:00 AM, it climbs rapidly, reaching an impressive 12 by 10:00 AM and soaring to its zenith shortly after. Despite a slight decline to 11 at 1:00 PM, the intensity remains significant. By the afternoon, it gently tapers off, dropping to a 4 by 3:00 PM and further sinking to a safe 1 by 5:00 PM. As dusk approaches, the UV Index plummets to 0 by 7:00 PM, marking a safe end to the day’s outdoor activities. Remember to shield your skin during peak hours, especially between 10 AM and 2 PM!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 3 | moderate | 30 min |
| 08:00 | 6 | high | 25 min |
| 09:00 | 10 | very high | 15 min |
| 10:00 | 12 | extreme | 10 min |
| 11:00 | 14 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 8 | very high | 15 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 exhibit significant seasonal variations, with the highest risk occurring from March to September. Notably, April, May, June, July, and August are classified as extreme exposure months with a UV Index reaching up to 14, where the burn time is a mere 10 minutes. As early as February, the UV Index escalates to 7 (high), signaling an increase in sun exposure risk. For January and December, visitors and residents can expect moderate UV levels, with a safer burn time of 30 minutes. As such, individuals are strongly advised to take protective measures during high and extreme UV Index months, including wearing sunscreen, protective clothing, and limiting sun exposure, especially during midday when the sun’s rays are strongest.
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 |
| Bhaktapur | 5 | 7 | 10 | 11 | 12 | 14 | 14 | 14 | 12 | 10 | 7 | 5 |
| Pokhara UVI | 7 | 9 | 12 | 13 | 14 | 15 | 15 | 15 | 14 | 12 | 8 | 6 |