Last updated: July 2, 2025
In Herzberg am Harz, understanding the UV Index is essential for safeguarding your skin health during sunny days. The UV Index reflects the strength of the sun's ultraviolet radiation, which can lead to sunburn and long-term skin damage if left unchecked. With a Cfb climate characterized by mild temperatures, Herzberg experiences varying UV levels throughout the day, peaking at a high of 8 between noon and 2 PM. Being aware of these risks can help you take proactive measures, ensuring that you enjoy the outdoors safely while protecting your skin from harmful UV rays.
The UV Index throughout the day reveals a clear peak in sun intensity, providing a vivid illustration of solar exposure. Starting at 07:00, the index is a mild 1, indicating minimal risk. As the sun climbs higher, it rises to 3 by 09:00 and hits 6 at 11:00, urging early protectors to apply their sunscreen. The intensity reaches its zenith at 12:00, with a robust 7, and maintains 8 between 13:00 and 14:00, suggesting it's crucial to seek shade or cover during these hours. As the afternoon progresses, the figures gently decline, dipping to 4 at 17:00 and finally returning to a low 1 by 19:00. This hourly dance of the UV Index serves as a reminder to be sun-smart and make the most of outdoor activities while remaining vigilant during peak hours.
| 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 | 4 | moderate | 30 min |
| 11:00 | 6 | high | 25 min |
| 12:00 | 7 | high | 25 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 8 | very high | 15 min |
| 15:00 | 7 | high | 25 min |
| 16:00 | 5 | moderate | 30 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV exposure varies significantly, with notable increases during the spring and summer months. From January to February, the UV Index remains low (1-2), allowing for safer outdoor activities with a burn time of 45 minutes. As we progress into March and April, the levels rise to a moderate range (4-5), reducing burn time to 30 minutes. The high-risk months of May through August see a dramatic increase, with UV Index values reaching 7-8 (high to very high), which significantly shortens burn time to 15-25 minutes. Finally, from September to October, the risk decreases as the UV Index drops to moderate levels (4-6), returning to safer exposure times. Visitors and residents are advised to take precautions during high-risk months by wearing sunscreen, protective clothing, and seeking shade, especially during midday hours, to minimize the risk of skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Hamburg UVI | 1 | 2 | 3 | 5 | 7 | 8 | 7 | 7 | 5 | 3 | 2 | 1 |
| Berlin UVI | 1 | 2 | 4 | 5 | 7 | 8 | 7 | 7 | 5 | 3 | 2 | 1 |
| Koeln UVI | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 5 | 4 | 2 | 1 |
| Herzberg am Harz | 1 | 2 | 4 | 5 | 7 | 8 | 8 | 7 | 6 | 4 | 2 | 1 |
| Frankfurt am Main UVI | 2 | 3 | 4 | 5 | 8 | 8 | 8 | 7 | 5 | 4 | 2 | 1 |
| Munich UVI | 2 | 3 | 5 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 1 |