Last updated: July 2, 2025
In Bullet, Switzerland, understanding the UV Index is essential for safeguarding your skin health and preventing sunburn. Knowledge of UV levels empowers residents and visitors alike to take necessary precautions, especially during the sunniest parts of the day when the index peaks at 9—a significant risk level. With its temperate Cfb climate, Bullet experiences varied sunlight exposure, making awareness of UV risks crucial for anyone enjoying outdoor activities. Stay informed and protect your skin while soaking up the breathtaking Swiss scenery!
The UV Index data reveals a significant increase in solar exposure throughout the day. Starting with a low of 1 at 07:00, the index gradually rises to 3 by 09:00. The sun reaches its peak intensity at 13:00 and 14:00 with a striking 9, indicating a high risk of harm from unprotected sun exposure. As the afternoon progresses, the index slightly declines but remains notable at 8 until 15:00, before tapering off towards the evening. By 19:00, the UV Index drops back to 1, marking a safe return for outdoor activities as the sun sets. For those planning outdoor adventures, it’s essential to stay protected during the peak hours!
| 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 | 8 | 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 | 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, the UV Index exhibits significant seasonal fluctuations, indicating varying levels of risk for sun exposure. The high-risk months are from March to August, peaking in June with an index of 10, where the risk is categorized as very high and a burn time of just 15 minutes. Residents and visitors should take caution during these months, ensuring they utilize sunscreen, wear protective clothing, and seek shade, especially during midday when UV radiation is strongest. As we move into September and October, the UV Index decreases, indicating a lower risk, making these months more favorable for outdoor activities while still maintaining sun protection measures. As winter approaches from November to February, the UV levels drop significantly, offering more gentle sun exposure, yet it remains wise to be mindful of skin protection, even during these months.
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 |
| Bullet | 2 | 3 | 6 | 7 | 8 | 10 | 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 |