Last updated: August 1, 2025
In Villalba de la Sierra, Spain, understanding the UV Index is crucial for maintaining skin health and preventing sunburn. With the region's Csb climate, residents and visitors can experience significant UV exposure, especially during peak hours when the index soars to levels of 10 and 11 around midday. Awareness of the UV levels helps you make informed decisions about outdoor activities, ensuring you protect your skin from harmful effects. Whether you're hiking the beautiful trails or enjoying the sun-filled days, staying informed about the UV Index will empower you to enjoy the outdoors safely.
As the day unfolds, the UV Index rises dramatically, starting at a modest 1 by 07:00 and steadily climbing to a peak of 11 between 14:00 and 15:00. This surge highlights the importance of staying protected under the sun, especially from 12:00 to 15:00, when the index exceeds 8—a strong indicator of harmful UV exposure. After this midday peak, the index gradually declines, settling back to 4 by 18:00 and dipping to 2 by 19:00. Those planning outdoor activities should take precautions during the most intense hours when the sun's rays are the strongest, ensuring a safe and enjoyable experience in the sun.
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 1 | low | 45 min |
| 10:00 | 3 | moderate | 30 min |
| 11:00 | 5 | moderate | 30 min |
| 12:00 | 7 | high | 25 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 8 | very high | 15 min |
| 17:00 | 5 | moderate | 30 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 2 | low | 45 min |
Throughout the year, UV exposure significantly fluctuates, with the highest risk months occurring from April to August, where the UV Index reaches levels classified as very high to extreme. Notably, June is the peak month with an extreme UV Index of 12, resulting in a burn time of just 10 minutes. As spring turns to summer, individuals should take extra precautions; wearing sunscreen, protective clothing, and seeking shade during peak hours is highly advisable. Conversely, during the winter months of January and December, the UV Index drops to 3, categorized as moderate, allowing for longer exposure times of 30 minutes without significant risk. Residents and visitors should remain vigilant in high-index months, especially from March to September, to protect their skin health while enjoying outdoor activities.
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 |
| Villalba de la Sierra | 3 | 5 | 7 | 9 | 10 | 12 | 11 | 10 | 9 | 7 | 4 | 3 |
| Sevilla UVI | 3 | 5 | 7 | 9 | 10 | 11 | 10 | 10 | 9 | 7 | 4 | 3 |