Last updated: May 3, 2025
In the charming town of Belfaux, Switzerland, being aware of the UV Index is crucial for safeguarding your skin and overall health. Understanding the UV levels can help you prevent sunburns and reduce the risk of long-term skin damage, making sun safety a top priority, especially during the warm summer months. With a Cfb climate characterized by moderate temperatures and varying cloud cover, it's essential to recognize that even on seemingly mild days, UV exposure can be significant. For instance, during peak hours, the UV Index can soar to 8, indicating a very high risk of harm from unprotected sun exposure. Stay informed and enjoy the sun safely!
As the sun rises, the UV Index starts off low at 1 by 7:00 AM, perfect for a leisurely morning stroll. However, as the day progresses, intensity increases dramatically. By 9:00 AM, it climbs to 3, and by 11:00 AM, it reaches 6, signaling the need for sun protection. The peak comes at 1:00 PM where the UV Index hits a high of 8, remaining intense until 2:00 PM. Afterward, it gradually declines to 5 by 4:00 PM, and further drops to 1 by 7:00 PM. Keep an eye on the UV levels to enjoy the sun safely throughout the day!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | 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, the UV Index experiences significant fluctuations that pose varying levels of risk for sun exposure. From January to March, the UV Index remains low to moderate, with burn times increasing from 45 minutes in January to 25 minutes by March. However, as we transition into April, May, June, and July, the risk escalates sharply, peaking at 9 in June and July, where burn times drop to just 15 minutes. These months are particularly high-risk for skin damage, emphasizing the need for protective measures. August sees a slight decline, but remains at a very high UV Index of 8. As autumn approaches, the UV Index decreases, stabilizing at moderate levels in October and November with burn times increasing back to 30 minutes, before returning to low risk in December. To ensure safety during high-risk months, residents and visitors should apply sunscreen frequently, wear protective clothing, and seek shade, especially during peak sunlight hours between 10 a.m. and 4 p.m.
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 |
| Belfaux | 2 | 3 | 6 | 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 |