Last updated: July 2, 2025
In Chattogram, Bangladesh, being aware of the UV Index is crucial for protecting your skin and overall health. Understanding daily UV levels is vital, as high exposure can lead to painful sunburns and long-term skin issues, including an increased risk of skin cancer. Chattogram experiences a climate that can intensify UV radiation, particularly during mid-day hours when the UV Index can soar to a maximum of 13. By staying informed about these levels, you can take appropriate measures to safeguard yourself against harmful UV exposure, ensuring a healthy and enjoyable time outdoors.
The UV Index throughout the day showcases a striking pattern of intensity, peaking sharply around 11:00 AM and 12:00 PM with a robust 13, signaling a high risk for sun exposure during these hours. Early morning starts gently at 2 at 7:00 AM, then steadily climbs, passing through moderate levels at 8:00 AM and 9:00 AM, before reaching a critical point with a 10 at 10:00 AM. Post-noon, the index gradually declines, dropping to 6 by 3:00 PM and further to a much safer 1 by the evening at 5:00 PM and 6:00 PM, where it ultimately settles at 0 by nightfall. To enjoy the sun while protecting your skin, plan outdoor activities early or enjoy them after the 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 | 13 | extreme | 10 min |
| 12:00 | 13 | extreme | 10 min |
| 13:00 | 12 | 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 |