Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Tirunelveli, India, where the tropical climate calls for heightened awareness of sun exposure. With peak UV levels reaching up to 13 around midday, it becomes imperative to monitor these fluctuations to prevent sunburn and protect skin health. By grasping UV levels throughout the day, individuals can take proactive measures against harmful rays, ensuring they enjoy the sun safely. Given Tirunelveli’s often clear skies and persistent sunshine, staying informed about the UV Index can help you safeguard your skin and make the most of outdoor activities without compromising your health.
As the sun rises, the UV Index begins its ascent, starting at a modest 1 at 07:00. By 08:00, it reaches 3, signaling a gradual increase in UV exposure. The peak arrives just before noon, with the index soaring to a maximum of 13 at 12:00, which means it's time to seek shade and apply sunscreen! As the afternoon unfolds, the index gradually declines, dropping to 9 by 14:00, and further easing to 5 at 15:00. As the sun sets and the day cools, the index tapers off to 1 by 17:00 and finally drops to 0 by 19:00. This hourly journey illustrates the critical need for sun protection during peak hours, especially from 10:00 to 13:00, when the sun’s rays are at their most intense. Stay safe and enjoy the sunshine!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 10 | very high | 15 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 12 | extreme | 10 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 5 | 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 |
The UV Index experiences minimal variation throughout the year, consistently remaining in the extreme exposure category from January to October, with burn times averaging around 10 minutes. Notably, March and April peak at a UV Index of 14, making these months particularly high-risk for sun exposure. The UV Index dips slightly in November to 11 and December to 10; however, December still presents a very high exposure category with a burn time of 15 minutes. Visitors and residents are strongly advised to take precautions year-round, particularly during high-risk months, by wearing appropriate sun protection such as broad-spectrum sunscreen, hats, and sunglasses, and seeking shade whenever possible.
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 |
| 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 |
| Tirunelveli | 11 | 13 | 14 | 14 | 13 | 13 | 13 | 14 | 14 | 13 | 11 | 10 |