Last updated: July 2, 2025
In Gross-Bieberau, Germany, staying aware of the UV Index is crucial for maintaining skin health and preventing sunburn, especially during the peak hours of sunlight. Understanding UV levels helps residents and visitors protect themselves from harmful rays that can cause long-term damage. With a Cfb climate that typically offers a mix of sunny days and overcast skies, Gross-Bieberau presents varying UV exposure risks throughout the day, peaking at a UV Index of 8 around midday. Being informed about these levels not only enhances outdoor enjoyment but also promotes healthier skin for all.
The UV Index throughout the day reveals a distinct pattern of increasing intensity as the sun rises. At 07:00, the index starts at a mild 1, gradually climbing to 2 by 08:00. As the day progresses, the intensity ramps up, peaking at an impressive 8 during the hours of 13:00 and 14:00—a clear indication that midday sun is at its most potent. After this height, the index begins to descend, dropping back to 6 at 16:00, and later settling at a more manageable 1 by 19:00. This hourly data clearly underscores the importance of sun protection during the midday hour for outdoor activities.
| 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 | 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 experiences significant fluctuations, with notable increases during the spring and summer months. High-risk months for UV exposure are from April to August, where the index reaches its peak at 8 during May, June, and July, categorized as very high, indicating a burn time of just 15 minutes. As a result, it is crucial for visitors and residents to take precautions during these months, such as seeking shade, wearing protective clothing, and applying sunscreen frequently. February and March also present moderate risk, with UV indices of 3 and 4, respectively, encouraging individuals to be mindful of sun exposure. During the winter months, notably January and December, the UV index decreases to 2 and 1, allowing for more leisurely outdoor activities with less risk of overexposure.
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 |
| Frankfurt am Main UVI | 2 | 3 | 4 | 5 | 8 | 8 | 8 | 7 | 5 | 4 | 2 | 1 |
| Gross-Bieberau | 2 | 3 | 4 | 6 | 8 | 8 | 8 | 7 | 6 | 4 | 2 | 1 |
| Munich UVI | 2 | 3 | 5 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 1 |