Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Los Silos, Spain, where the sun's strength can significantly impact skin health. With peak UV levels soaring to 12 during midday, awareness of these readings is essential for preventing sunburn and reducing long-term risks related to skin cancer. The temperate climate of Los Silos, characterized by its Csb classification, offers beautiful days but also presents unique challenges in UV exposure, especially during the summer months. Stay informed and enjoy the sun safely!
As the sun rises, the UV Index dramatically climbs throughout the morning, starting at a mere 0 at 7:00 AM. By 8:00 AM, it nudges up to 1, but things really heat up at 10:00 AM when it reaches 3. The peak of the day arrives around 1:00 PM, when the index hits a sizzling 11, just before maxing out at 12 at 2:00 PM. Afterward, a steady decline ensues, with the index falling to 6 by 5:00 PM and dropping further to 2 by 7:00 PM. This data emphasizes the need for sun protection during those peak hours, particularly between 11:00 AM and 2:00 PM, when the sun is most intense!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 3 | moderate | 30 min |
| 11:00 | 6 | high | 25 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 12 | extreme | 10 min |
| 15:00 | 11 | extreme | 10 min |
| 16:00 | 9 | very high | 15 min |
| 17:00 | 6 | high | 25 min |
| 18:00 | 4 | moderate | 30 min |
| 19:00 | 2 | low | 45 min |
Throughout the year, UV levels exhibit significant seasonal changes, with the highest risks occurring from March through September. During this peak period, the UV Index reaches extreme levels of 11 to 12, particularly in April, May, June, and July, where the recommended burn time drops to as little as 10 minutes. February and October also show higher UV indices of 7 and 9, categorizing them as high and very high, respectively. Residents and visitors should take special precautions during these months, such as wearing protective clothing, applying sunscreen, and seeking shade, especially during midday when the sun's rays are most intense. Conversely, January, November, and December present moderate UV levels, with longer burn times of 30 and 25 minutes, allowing for safer outdoor activities with reasonable sun protection.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Barcelona UVI | 3 | 4 | 5 | 7 | 8 | 10 | 10 | 9 | 7 | 6 | 3 | 2 |
| Zaragoza UVI | 3 | 4 | 6 | 8 | 9 | 11 | 11 | 9 | 8 | 6 | 3 | 2 |
| Valencia UVI | 3 | 4 | 6 | 8 | 9 | 11 | 10 | 9 | 8 | 6 | 4 | 3 |
| Madrid UVI | 3 | 4 | 6 | 8 | 10 | 11 | 11 | 9 | 8 | 6 | 4 | 3 |
| Sevilla UVI | 3 | 5 | 7 | 9 | 10 | 11 | 10 | 10 | 9 | 7 | 4 | 3 |
| Los Silos | 5 | 7 | 9 | 11 | 12 | 12 | 12 | 11 | 11 | 9 | 7 | 5 |