Last updated: May 3, 2025
In Chattogram, Bangladesh, being aware of the UV Index is crucial for safeguarding your skin and overall health. With UV exposure peaking during the sunny days typical of the region's tropical climate, understanding UV levels can help prevent harmful effects like sunburn and long-term skin damage. On any given day, the UV Index can surge to a maximum of 12 around midday, indicating a high risk of harm from unprotected sun exposure. By staying informed about these levels, residents and visitors alike can make smarter choices about sun safety and enjoy the vibrant outdoor lifestyle that Chattogram has to offer.
At dawn, the sun's rays begin gently, with a UV Index of 2 at 07:00. As the morning progresses, this value steadily climbs, reaching 4 by 08:00 and peaking at a robust 12 by noon. The highest intensity occurs between 11:00 and 12:00, where caution is advised under the relentless sun. Following this peak, the index slightly decreases to 11 at 13:00 and dips further to 8 by 14:00, signifying a gradual retreat of UV strength. The afternoon winds down with safer levels, dropping to 5 at 15:00, and continuing its decline to 2 by 16:00. As the evening sets in, UV exposure tapers off dramatically, falling to 1 by 17:00, and fading into 0 at 19:00. Always remember to protect your skin during those 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 | 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 | 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 |