Last updated: June 2, 2025
Understanding the UV Index in Sundarnagar, India is crucial for protecting yourself against the sun's harmful rays. With peak UV levels reaching as high as 11 during midday hours, the risk of sunburn and long-term skin damage becomes a significant concern. Awareness of UV exposure not only helps in preventing immediate discomfort but also plays a vital role in maintaining lifelong skin health. Sundarnagar experiences a Cwa climate, characterized by distinct wet and dry seasons, yet its sunny days can lead to dangerous UV levels. By staying informed about the daily UV Index, residents can take proactive steps to safeguard their skin while enjoying the beautiful outdoors.
The UV Index throughout the day presents a dynamic picture of sun exposure. As early as 7:00 AM, the index starts at a mild 2, ramping up to a moderate 4 by 8:00 AM. The sun's intensity peaks around 11:00 AM and 12:00 PM with a striking 11, marking the height of caution for outdoor activities. As we move into the afternoon, the index gradually declines, dropping to 8 by 2:00 PM and further to 5 by 3:00 PM. The evening brings relief, with the UV Index decreasing to a 1 by 5:00 PM and finally hitting 0 by 7:00 PM. It’s clear that the midday hours pose the greatest risk, so sun safety measures are essential during those peak times.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 7 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 11 | 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 | 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 index levels show significant seasonal variation, with the highest risk occurring from March to August. During this period, particularly in April, May, July, and August, the UV Index reaches extreme levels of 11 to 12, necessitating urgent sun protection measures, as the burn time is dramatically reduced to just 10 minutes. Visitors and residents should take precautions such as wearing sunscreen, protective clothing, and hats, and seek shade, especially during midday hours. In contrast, the months of January, November, and December feature moderate UV levels (4 to 5), allowing for safer outdoor activities with longer burn times (30 minutes). February sees a shift to high risk (UV Index 6), indicating a need for more cautious sun exposure. It is essential to remain vigilant against UV exposure as the seasons change to ensure skin health throughout the year.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Delhi UVI | 5 | 6 | 9 | 10 | 10 | 10 | 12 | 12 | 9 | 8 | 5 | 5 |
| Sundarnagar | 5 | 6 | 10 | 11 | 12 | 11 | 12 | 12 | 10 | 8 | 5 | 4 |
| Mumbai UVI | 8 | 9 | 10 | 11 | 11 | 12 | 13 | 13 | 11 | 10 | 7 | 7 |
| Ahmedabad UVI | 7 | 8 | 10 | 12 | 11 | 12 | 13 | 13 | 11 | 10 | 7 | 6 |
| Hyderabad UVI | 10 | 11 | 12 | 11 | 13 | 13 | 15 | 14 | 13 | 11 | 8 | 8 |
| Bengaluru UVI | 11 | 13 | 13 | 14 | 13 | 14 | 14 | 14 | 14 | 12 | 11 | 10 |