Last updated: July 2, 2025
In Collado-Villalba, Spain, understanding the UV Index is essential for protecting your skin from harmful ultraviolet radiation. With peak UV levels reaching 11 during the summer months, awareness of daily fluctuations can help you prevent sunburn and maintain long-term skin health. The region’s Mediterranean climate, characterized by warm summers and mild winters, increases exposure risks, making it crucial for residents and visitors alike to stay informed about UV levels. By keeping an eye on the UV Index, you can enjoy the outdoors safely and take necessary precautions when the sun's rays are at their strongest.
The UV Index data tells a compelling story of sunlight intensity throughout the day. Starting at a gentle 1 at 07:00, the index gradually rises, reaching 3 by 10:00. By 12:00, the scores soar to an impressive 8, peaking at an intense 11 by 14:00. As the afternoon wanes, the UV Index begins to decline, dropping to 7 by 17:00 and further to 2 by 19:00. It's a clear reminder of the day's highest UV exposure between 12:00 and 14:00. Always remember to protect your skin during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | 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 | 8 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 10 | very high | 15 min |
| 16:00 | 9 | very high | 15 min |
| 17:00 | 7 | high | 25 min |
| 18:00 | 4 | moderate | 30 min |
| 19:00 | 2 | low | 45 min |
Throughout the year, UV levels exhibit significant seasonal fluctuations, peaking in the summer months. January and February present moderate UV levels (Index 3-4), allowing for a burn time of about 30 minutes. As spring arrives in March, the UV Index sharply rises to 7, marking the beginning of high-risk months, with reduced burn time of 25 minutes. The peak risk months are April to July, where the UV Index reaches 9-11 (very high to extreme), necessitating vigilant sun protection with a burn time as low as 10 minutes in June and July. Conditions remain risky into August and September (UV Index 8-10), before tapering off in October and returning to moderate levels by November and December. Residents and visitors are advised to take extra precautions during these high-risk months, such as seeking shade, wearing protective clothing, and applying broad-spectrum sunscreen to minimize the risk of harmful UV exposure.
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 |
| Collado-Villalba | 3 | 4 | 7 | 9 | 10 | 11 | 11 | 10 | 8 | 6 | 4 | 3 |
| Sevilla UVI | 3 | 5 | 7 | 9 | 10 | 11 | 10 | 10 | 9 | 7 | 4 | 3 |