Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors of Saint Thomas Mount, India, as it provides essential information about the sun's ultraviolet radiation levels throughout the day. This awareness is vital for sunburn prevention and maintaining overall skin health, particularly in a region characterized by its warm and sunny Aw climate. With UV levels peaking at a staggering 13 around midday, knowledge of these fluctuations helps individuals take timely precautions against harmful effects, ensuring a safer and healthier outdoor experience. By keeping an eye on the UV Index, you can enjoy the beautiful outdoors while protecting your skin from potential damage.
The UV index throughout the day presents an intriguing journey of exposure, peaking at 13 from 11:00 AM to 12:00 PM—the sun's most intense moment. Starting from a modest 2 at 7:00 AM, the index swiftly escalates, hitting 4 by 8:00 AM and soaring to a substantial 11 at 10:00 AM. Just one hour later, it reaches its zenith, radiating at 13, before gradually descending as the afternoon wanes. By 3:00 PM, it's a more manageable 5, eventually dwindling down to 0 by 7:00 PM, signaling a safe retreat from the sun's rays. This dynamic UV pattern serves as a reminder to stay vigilant under the sun, especially during its peak hours when protective measures are essential.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 4 | moderate | 30 min |
| 09:00 | 8 | very high | 15 min |
| 10:00 | 11 | extreme | 10 min |
| 11:00 | 13 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 5 | moderate | 30 min |
| 16:00 | 2 | low | 45 min |
| 17:00 | 1 | low | 45 min |
| 18:00 | 0 | low | 45 min |
| 19:00 | 0 | low | 45 min |
The UV Index experiences notable seasonal changes, peaking during the summer months with extreme levels. February to October marks the high-risk period for UV exposure, especially from March to October, where the UV Index reaches its highest at 14 in April. Burn times are notably short during these months, often just 10 minutes, indicating a critical need for sun protection. Residents and visitors are strongly advised to minimize sun exposure during peak hours, wear protective clothing, and use a broad-spectrum sunscreen to safeguard against harmful UV radiation. In contrast, January, November, and December see a decline in UV levels to very high, with slightly longer burn times of 15 minutes, still warranting caution. Stay vigilant throughout the year to ensure your skin remains protected against UV damage.
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 |
| Saint Thomas Mount | 9 | 12 | 13 | 14 | 12 | 12 | 13 | 13 | 13 | 11 | 10 | 9 |
| Bengaluru UVI | 11 | 13 | 13 | 14 | 13 | 14 | 14 | 14 | 14 | 12 | 11 | 10 |