Last updated: June 2, 2025
In Septemvri, Bulgaria, being aware of the UV Index is crucial for maintaining skin health and preventing sunburn. Understanding UV levels allows residents and visitors alike to take necessary precautions, ensuring enjoyable outdoor activities without the risk of harmful skin exposure. With a Cfb climate, September typically features moderate warmth, but the UV Index can peak considerably — reaching as high as 10 during midday hours. This makes it essential to stay informed and protect yourself from potential UV risks, especially during the sunniest hours of the day.
The UV index begins its ascent at 07:00, starting at a gentle 1, then climbs gradually through the morning. By 10:00, it reaches a moderate 5, but from 11:00 onwards, the sun's intensity becomes pronounced, peaking at an impressive 10 between 13:00 and 14:00. After this zenith, the index dips to 8 at 15:00 and continues its decline, settling back to 2 by 18:00. As the day winds down into the evening, the UV index drops to a low 1 by 19:00, signaling a return to safer sun exposure levels. Enjoy the sunshine while staying protected during the high points!
| 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 | 7 | high | 25 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index shows significant seasonal variation, peaking during the summer months. From January to February, UV levels are relatively low, with a maximum exposure of 45 minutes in January. However, starting in March, the risk escalates considerably, reaching a high level by March (UV Index 7) and escalating to a very high category in April (UV Index 8) through July (UV Index 10). Notably, the highest risk period spans from April to August, with a consistent burn time of 15 minutes during these months. By September, the index decreases to 7, followed by October at 6, which still falls in the high category with a burn time of 25 minutes. The year concludes with reduced risk in November and December, reverting to low levels (UV Index 2), where individuals can spend up to 45 minutes in the sun without significant risk of burns. For visitors and residents, it is crucial to take precautions—such as wearing sunscreen, protective clothing, and seeking shade—especially between April and August to minimize exposure during these high-risk months.
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 |
| Septemvri | 2 | 4 | 7 | 8 | 9 | 10 | 9 | 9 | 7 | 6 | 3 | 2 |