Last updated: May 3, 2025
Understanding the UV Index is essential for the residents of Nageswari, Bangladesh, as it plays a crucial role in safeguarding skin health and preventing sunburn. Given the region's Cwa climate, characterized by hot summers, awareness of UV levels helps locals make informed decisions about sun exposure, especially during peak hours when the index can skyrocket to 11. With the UV Index fluctuating throughout the day—from a mild 2 at dawn to a critical level of 11 at noon—knowing when to seek shade or apply sunscreen can significantly reduce the risk of skin damage. Stay informed to protect yourself and enjoy the sunny days safely!
As the sun rises, the UV Index begins its ascent, peaking dramatically between 11:00 AM and 12:00 PM with an intense value of 11. A moderate 3 greets early risers at 8:00 AM, but by 10:00 AM, it reaches a noteworthy 9, signaling a shift to more intense sunlight. The index then climbs to its maximum of 11 at noon, urging the need for sun safety measures. As the afternoon progresses, values gradually decline, dropping to 10 by 1:00 PM and easing to 5 by 3:00 PM. Evening hours bring a steady drop, with the index lowering to 1 by both 5:00 PM and 6:00 PM, before finally settling at 0 after 7:00 PM. This pattern highlights the importance of midday sun protection, as UV exposure peaks when the sun is highest in the sky.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 2 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 9 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 5 | moderate | 30 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 fluctuate significantly, indicating varying risks associated with sun exposure. From January to December, the UV index ranges from 5 (moderate) in January to a peak of 12 (extreme) in the summer months of July, August, and September. Notably, the high-risk months are May through September, where the UV index reaches extreme levels, necessitating heightened sun safety measures. Visitors and residents are advised to prioritize sun protection during these periods by seeking shade, wearing protective clothing, and applying broad-spectrum sunscreen regularly, especially during peak hours. As the seasons change, awareness of these UV fluctuations is essential for maintaining skin health throughout the year.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nageswari | 5 | 7 | 8 | 8 | 11 | 11 | 12 | 12 | 12 | 10 | 7 | 6 |
| 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 UVI | 6 | 8 | 10 | 10 | 12 | 13 | 13 | 13 | 12 | 11 | 8 | 6 |