Last updated: June 2, 2025
Understanding the UV Index is essential for residents and visitors of Bansko, Bulgaria, where the stunning alpine climate can lead to heightened sun exposure, especially during the warmer months. The UV Index provides crucial information about the intensity of ultraviolet (UV) radiation, helping you take preventive measures against sunburn and long-term skin health issues. With peak UV levels soaring to 11 around midday, it’s vital to be aware of the risks associated with outdoor activities in this charming mountain town. Bansko’s unique climate, classified as Cfb, means you can enjoy beautiful sunny days, but it also necessitates mindfulness regarding sun safety. Embrace the outdoors wisely and protect your skin while reveling in the breathtaking landscapes!
The UV Index dramatically peaks during the midday hours, showcasing a clear pattern of solar intensity. Starting from a mild 1 at 07:00, it steadily rises, reaching a notable 11 by 13:00. This peak signifies a high risk for skin damage, urging sun safety precautions. As the afternoon progresses, the index gradually declines—falling to 9 at 15:00, and decreasing further to 2 by 18:00. With the sun's intensity waning, the cooler evening hours promise a gentle close to the day, offering a more comfortable outdoor experience. Always stay vigilant during peak UV times!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 7 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
As the year progresses, UV Index levels exhibit significant seasonal changes, with high-risk months emerging from March through September. During this period, the UV Index escalates to very high levels in April, May, July, and August, peaking at an extreme level of 11 in June, necessitating vigilant sun protection. Residents and visitors should note that March marks the onset of the high-risk season, with a UV Index of 7, and continue to exercise caution through September, where levels remain notably high. To minimize the risk of sunburn, it is advisable to seek shade during peak hours, wear protective clothing, and apply broad-spectrum sunscreen, especially in the high or extreme UV categories, where burn times can be as low as 10 minutes. In contrast, during the winter months of January and December, the UV Index drops to 2, indicating a low exposure risk, allowing for more lenient sun protection measures.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ruse UVI | 2 | 4 | 6 | 7 | 8 | 9 | 9 | 9 | 7 | 5 | 3 | 2 |
| Varna UVI | 2 | 4 | 6 | 7 | 8 | 9 | 9 | 9 | 7 | 5 | 3 | 2 |
| Burgas UVI | 2 | 4 | 6 | 7 | 9 | 9 | 9 | 9 | 7 | 5 | 3 | 2 |
| Plovdiv UVI | 2 | 4 | 6 | 8 | 9 | 10 | 9 | 9 | 7 | 6 | 3 | 2 |
| Sofia UVI | 2 | 4 | 7 | 7 | 9 | 10 | 10 | 9 | 7 | 6 | 3 | 2 |
| Bansko | 2 | 4 | 7 | 8 | 10 | 11 | 10 | 10 | 8 | 6 | 4 | 2 |