Last updated: July 2, 2025
Understanding the UV Index in Keelakarai, India, is crucial for protecting your skin health and preventing sunburn. With the region’s tropical climate, residents and visitors should be aware of the UV levels which can soar especially during peak hours between 10 AM and 1 PM, when readings can reach as high as 12. By being informed about these fluctuations, you can take proactive measures to shield yourself from harmful rays, ensuring a safer outdoor experience. Whether you're enjoying the sunny beaches or engaging in outdoor activities, knowing the UV Index helps you plan accordingly and enjoy the vibrant climate of Keelakarai while keeping skin safety in mind.
The UV Index throughout the day reveals a dynamic pattern of sun exposure. Starting off gently at 7:00 AM with a moderate 2, the intensity quickly escalates. By 9:00 AM, it reaches a robust 7, and then peaks at 12 during the 11:00 AM and 12:00 PM hours, signaling a high risk for sunburn. As the afternoon unfolds, the UV levels gradually taper off, dipping to 5 by 3:00 PM, before plunging to 1 by 5:00 PM and finally settling at a restful 0 after 6:00 PM. This underscores the importance of sun safety during the peak hours when protection is crucial.
| 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 | 12 | extreme | 10 min |
| 12:00 | 12 | 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 |
Throughout the year, the UV Index remains exceptionally high, with extreme levels (UV Index 11-14) dominating from January to September. The months of March and September peak at a UV Index of 14, making them the highest risk periods for sun exposure. February and August are also notably high with an index of 13. Residents and visitors are advised to take stringent sun protection measures during these high-risk months—especially between January and September—such as wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade during peak hours. As we transition into October and November, the risk slightly decreases, but remaining vigilant is still essential, particularly in December when the UV Index drops to 10, classified as very high. Overall, prioritizing sun safety year-round is crucial to mitigate the risks associated with extreme UV exposure.
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 |
| Keelakarai | 11 | 13 | 14 | 14 | 13 | 12 | 12 | 13 | 14 | 12 | 11 | 10 |
| Bengaluru UVI | 11 | 13 | 13 | 14 | 13 | 14 | 14 | 14 | 14 | 12 | 11 | 10 |