Last updated: June 2, 2025
Understanding the UV Index in Aizawl, India is essential for everyone who values healthy skin and sun safety. With the city's climate classified as Cwa, characterized by warm summers and mild winters, residents and visitors alike need to be vigilant about UV exposure levels, especially during peak hours from 10 AM to 2 PM when the index can soar as high as 13. This awareness is crucial for sunburn prevention and maintaining long-term skin health. By staying informed about the daily UV Index, Aizawl’s community can enjoy the outdoors while minimizing the risks associated with overexposure to harmful ultraviolet rays.
As the sun rises, the UV Index begins to climb, starting at a moderate 4 by 7:00 AM. By 8:00 AM, it surges to an impressive 8, signaling the approach of peak sunlight hours. The intensity peaks at 11:00 AM and 12:00 PM, reaching a high of 13, making sun protection essential. However, as the afternoon progresses, the index begins to drop; by 1:00 PM, it dips to 9, and by 2:00 PM, it falls further to 6. The UV intensity continues its decline, reaching 3 by 3:00 PM, and towards the evening, it drops to 1 by 4:00 PM. As twilight approaches, the index falls to 0 after 6:00 PM, marking the end of a day where caution against UV exposure was paramount from mid-morning to early afternoon.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 4 | moderate | 30 min |
| 08:00 | 8 | very high | 15 min |
| 09:00 | 11 | extreme | 10 min |
| 10:00 | 13 | extreme | 10 min |
| 11:00 | 13 | extreme | 10 min |
| 12:00 | 12 | extreme | 10 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 6 | high | 25 min |
| 15:00 | 3 | moderate | 30 min |
| 16:00 | 1 | 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 exhibits significant seasonal changes, with high-risk months occurring from February to October, where values consistently reach 9 or above. Notably, March through September sees the highest levels, peaking at 14 in July and August, indicating an extreme exposure category with a dangerous burn time of just 10 minutes. As a result, it is crucial for visitors and residents to take necessary precautions during these months, including seeking shade, wearing protective clothing, and applying broad-spectrum sunscreen to mitigate the risk of sunburn and long-term skin damage, especially during peak hours between 10 AM and 4 PM. For safer months, January, November, and December present lower UV indices, but caution is still advised, particularly in January and December, where burn times are shorter at 25 minutes.
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 |
| Aizawl | 7 | 9 | 11 | 11 | 13 | 13 | 14 | 14 | 13 | 11 | 9 | 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 |