Last updated: June 2, 2025
Understanding the UV Index in Chattogram, Bangladesh is crucial for protecting your skin from harmful ultraviolet rays. With the sun reaching its peak intensity in this tropical climate, awareness of UV levels can help prevent sunburn and long-term skin health issues. Chattogram experiences high UV exposure, particularly during midday when the index can soar to a dangerous 13. By staying informed about UV levels throughout the day, residents and visitors can take necessary precautions to enjoy the beautiful coastal environment while safeguarding their skin health.
As dawn breaks, the UV Index begins its journey, starting at a modest 2 at 7:00 AM. By 8:00 AM, it steadily climbs to 4, signaling the approach of stronger rays. The sun reaches its peak intensity at noon, soaring to a remarkable 13. From 11:00 AM to 1:00 PM, the index remains alarmingly high, maxing out at 12 and then gradually declining in the afternoon. By 3:00 PM, it drops to 6 and continues to wane, arriving at a gentle 1 by 5:00 PM. As the day winds down, the UV Index falls to zero by 7:00 PM, presenting a safe reprieve from the sun's rays. Remember to protect your skin during those peak hours when the sun's strength is at its highest!
| 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 | 13 | 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, UV Index levels exhibit significant seasonal fluctuations, with high-risk months occurring primarily from February to October. The peak UV Index is observed during the summer months, with values reaching an extreme level of 13 in June, July, and August, where the recommended burn time is just 10 minutes. May and September also present high-risk conditions, with UV indices of 12, while March and April maintain very high levels of 10. To ensure safety from harmful UV exposure, it is crucial for visitors and residents to take precautionary measures, especially during these months, such as wearing protective clothing, applying sunscreen with high SPF, and seeking shade during peak sun hours from 10 AM to 4 PM. As winter approaches, UV levels decrease, but maintaining sun safety practices remains important, particularly in January and November, where the UV Index still reaches 6 and 8 respectively.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rajshahi UVI | 5 | 7 | 8 | 9 | 10 | 12 | 13 | 13 | 12 | 10 | 7 | 5 |
| Dhaka UVI | 5 | 7 | 9 | 9 | 12 | 13 | 13 | 13 | 12 | 11 | 7 | 6 |
| Comilla UVI | 6 | 7 | 9 | 10 | 12 | 13 | 13 | 13 | 12 | 10 | 8 | 6 |
| Khulna UVI | 5 | 7 | 9 | 10 | 13 | 13 | 13 | 14 | 12 | 11 | 8 | 6 |
| Chattogram | 6 | 8 | 10 | 10 | 12 | 13 | 13 | 13 | 12 | 11 | 8 | 6 |