Last updated: June 2, 2025
Understanding the UV Index is crucial for residents of Villmergen, Switzerland, where the picturesque climate often entices locals and visitors to bask in the sun. With UV levels reaching a maximum of 9 during midday hours, awareness of these fluctuations is essential for preventing sunburn and protecting long-term skin health. Villmergen's Cfb climate offers mild summers, but even moderate UV exposure can pose risks, making it important to arm yourself with knowledge about the daily UV Index and take appropriate precautions. Remember, staying informed can help you enjoy the sun safely!
As the sun rises, the UV Index begins its ascent, starting at a gentle 1 at 07:00. By 08:00, it climbs to 2, indicating a mild increase in UV exposure. The real peak arrives at 12:00, where the index reaches a striking 9, underscoring the importance of sun protection during these hours. This high level remains steady until 14:00, followed by a gradual descent as the afternoon wanes: 8 at 15:00, 6 at 16:00, and continuing down to 2 at 18:00. As evening approaches, the UV Index drops to a soft 1 by 19:00, signaling a gentle close to the sun-soaked day. Remember to take precautions during the midday hours to safeguard your skin!
| 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 | 9 | very high | 15 min |
| 14:00 | 9 | 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 |
During the year, UV index levels fluctuate significantly, indicating varying risks for skin damage from sun exposure. The low-risk months are January, December (UV Index 2), and November, February, October (UV Index 3), where exposure is generally safe with longer burn times of 30-45 minutes. As the season progresses into March and April (UV Index 5-6), caution is advised as burn times decrease to 25-30 minutes. The high-risk months, notably May through August (UV Index 8-9), present very high UV exposure, with burn times shortening dramatically to just 15 minutes. In September, risk lowers slightly (UV Index 6) but remains significant with a burn time of 25 minutes. Visitors and residents are strongly encouraged to protect their skin, especially during peak UV months, by wearing sunscreen, protective clothing, and seeking shade whenever possible to minimize potential harm.
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 |
| Villmergen | 2 | 3 | 5 | 6 | 8 | 9 | 9 | 8 | 6 | 4 | 3 | 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 |