Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Gerzensee, Switzerland, where the sun can be deceptively strong, especially during the warmer months. As a picturesque village within the temperate climate zone (Cfb), Gerzensee experiences varying levels of UV radiation throughout the day, peaking around midday with indices of 9 to 10—indicating a high risk of harm from unprotected sun exposure. By being aware of UV levels, you can effectively prevent sunburn and take proactive steps to safeguard your skin health, ensuring you enjoy the sun safely while basking in the natural beauty of this stunning locale.
The UV Index throughout the day reveals a clear pattern of increasing intensity. Starting at a low of 1 at 7:00 AM, it steadily climbs, reaching 3 by 9:00 AM. By 11:00 AM, caution is advised as the index spikes to 7, peaking at a striking 10 at 1:00 PM, which signifies a very high risk of harm from unprotected sun exposure. The afternoon sees a gradual decline, with the index lowering to 8 at 3:00 PM and tapering off to 1 by 7:00 PM. Protecting your skin is essential during the midday hours, particularly from 12:00 to 2:00 PM, when the UV levels are at their most potent.
| 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 | 9 | very high | 15 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 7 | high | 25 min |
| 17:00 | 5 | moderate | 30 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, seasonal changes in UV exposure highlight significant fluctuations in the UV Index. The months of May through August are particularly high-risk, with UV Index values reaching a peak of 10, indicating very high exposure and a burn time of only 15 minutes. Visitors and residents should remain vigilant during these months, employing protective measures such as sunscreen and clothing, especially between 10 AM and 4 PM when UV exposure is strongest. March and April also show increased risk with UV Index values of 6 and 7 respectively. Conversely, January and December present lower risk levels, with UV Index values of 2 indicating low exposure and longer potential burn times of 45 minutes. It is essential to monitor UV levels year-round and adjust sun protection strategies accordingly to ensure safety.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basel UVI | 2 | 3 | 5 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 1 |
| Bern UVI | 2 | 3 | 5 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 2 | 2 |
| Zurich UVI | 2 | 3 | 5 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 3 | 2 |
| Geneve UVI | 2 | 3 | 6 | 7 | 8 | 10 | 9 | 8 | 7 | 5 | 3 | 2 |
| Lausanne UVI | 2 | 4 | 6 | 7 | 8 | 10 | 9 | 9 | 7 | 5 | 3 | 2 |
| Gerzensee | 2 | 4 | 6 | 7 | 9 | 10 | 10 | 9 | 7 | 5 | 3 | 2 |