Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Dadra, India, where the tropical Aw climate exposes individuals to varying levels of ultraviolet radiation throughout the year. As UV levels can dramatically change throughout the day, knowing the index helps in preventing sunburn and safeguarding skin health against long-term damage. With peak UV values reaching as high as 12 during the midday hours, awareness of these levels empowers the community to take proactive measures and enjoy the sun safely while minimizing the risk of harmful effects.
Starting the day with a low UV Index of 1 at 7:00 AM, the sun begins to assert its presence as the hours roll on. By 9:00 AM, it climbs to 6, marking the onset of a noticeable increase. The peak is reached at 11:00 AM and 12:00 PM, with the UV Index soaring to 12, warning sun seekers to stay protected. As the afternoon progresses, the intensity gradually declines, dipping to 9 at 2:00 PM, before further dropping to 6 at 3:00 PM. By late afternoon, from 4:00 PM onwards, it's back to safer levels, resting at 3 until 5:00 PM, then falling to 1 as the sun begins to set. By 7:00 PM, the UV threat dissipates altogether, registering 0. This pattern underscores the importance of sun safety, especially during peak hours!
| 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 | 9 | very high | 15 min |
| 11:00 | 12 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 6 | high | 25 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, the UV Index experiences notable fluctuations, peaking in the warmer months. From January to March, the UV Index rises steadily, reaching 10 in March, classified as very high with a short burn time of just 15 minutes. The true high-risk period emerges from April to August, where the Index escalates to an extreme level of 12 to 13, significantly reducing the burn time to just 10 minutes. September marks a slight decline but remains at an extreme level of 12. As temperatures cool in October, the exposure risk drops to very high at 10, and by November and December, it reduces to high with a burn time of 25 minutes. Visitors and residents are strongly advised to take precautions, such as wearing protective clothing, applying sunscreen, and avoiding direct sunlight during peak UV hours, particularly from April through September when the risk is highest.
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 |
| Dadra | 8 | 9 | 10 | 12 | 12 | 12 | 12 | 13 | 12 | 10 | 7 | 7 |
| 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 |