Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of Coimbatore, India, where the climate is characterized by its warm, sunny days. With UV levels often peaking from late morning to early afternoon, being aware of these fluctuations can help you take preventive measures against sunburn and long-term skin damage. High UV exposure can significantly impact skin health, making it essential to know when to seek shade or apply sunscreen. In Coimbatore's Aw climate, where typical UV exposure is robust, staying informed about the daily UV Index can safeguard your skin while you enjoy the great outdoors.
The UV Index throughout the day shows a significant rise, peaking dramatically between 12:00 PM and 1:00 PM, when it reaches a maximum of 14. Early morning hours start off relatively mild, with a 2 at 7:00 AM, gradually climbing to 4 by 8:00 AM. As the sun rises higher, 9:00 AM sees a notable leap to 7, followed by an intense 10 at 10:00 AM. The 11:00 AM mark escalates to 13, making the midday sun a prime time for sun protection. After this peak, the index begins to decline, tapering to 12 at 1:00 PM, and descending through the afternoon to 6 by 3:00 PM. As evening approaches, the UV Index drops sharply, concluding at 0 by 7:00 PM. This data emphasizes the importance of UV awareness during peak hours.
| 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 | 10 | very high | 15 min |
| 11:00 | 13 | extreme | 10 min |
| 12:00 | 14 | extreme | 10 min |
| 13:00 | 12 | 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 |
The UV Index exhibits seasonal variations, with the highest levels occurring in the spring and summer months. From January through September, the index consistently reaches extremes, ranging from 11 to 14, posing a significant risk of harm within just 10 minutes of unprotected exposure. The most critical months for UV exposure are March to September, when the index hits 14, indicating an increased likelihood of sunburn. As we move into October and November, the UV index drops slightly but remains at very high levels, underscoring the need for precaution. Visitors and residents alike should take protective measures during these high-risk months: wear sunscreen, seek shade, and don protective clothing to minimize harmful UV exposure and safeguard skin health.
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 |
| Coimbatore | 11 | 13 | 14 | 14 | 13 | 13 | 14 | 14 | 14 | 12 | 11 | 10 |