Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors of Engi, Switzerland, where the mild climate can sometimes lead to unexpected UV exposure. With UV levels peaking between 12 PM and 2 PM, awareness of these fluctuations can help prevent sunburn and protect skin health. Engi's temperate oceanic climate may not seem overtly sunny, but during warmer months, the risk of skin damage increases, especially with the UV Index reaching as high as 8 on clear days. By staying informed about the UV Index, you can enjoy the beautiful Swiss outdoors while safeguarding your skin against harmful rays.
As the day unfolds, the UV Index rises steadily, reaching its peak at 12:00 PM with a significant 8. The morning starts gently with a maximum of 1 at 7:00 AM, gradually escalating to 2 by 8:00 AM, and hitting 3 by 9:00 AM. The real intensity comes around 11:00 AM, when the index reaches 6, signaling the need for sun protection. From 12:00 PM to 2:00 PM, the UV Index remains high at 8, making it crucial to stay shaded and apply sunscreen. As the afternoon wanes, the index begins to decline, sliding down to 7 at 3:00 PM, and further to 5 by 4:00 PM. By 6:00 PM, the UV danger diminishes, dropping to 2, and eventually winding down to a safe 1 by 7:00 PM. Enjoy the sun, but don't forget your protection during the 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 | 8 | very high | 15 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 | 3 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
The UV Index experiences significant seasonal variation, with the highest levels occurring from March to August. During this period, the high-risk months are typically April through August, where the UV Index reaches its peak values of 8 to 10, indicating a very high exposure category and a quick burn time of just 15 minutes. In contrast, the winter months of January and December present lower UV Index values (2), categorized as low exposure, allowing for a longer burn time of up to 45 minutes. It is essential for both visitors and residents to take precautions during high UV Index months, such as wearing sunscreen, protective clothing, and seeking shade, especially between 11 a.m. and 4 p.m. when the sun’s rays are strongest.
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 |
| Engi | 2 | 3 | 6 | 7 | 8 | 10 | 9 | 8 | 6 | 5 | 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 |