Last updated: August 1, 2025
In Castellar de Santiago, Spain, understanding the UV Index is crucial for protecting your skin from harmful solar radiation. The UV Index provides vital information on daily sun exposure levels, helping residents and visitors alike take proactive steps to prevent sunburn and promote overall skin health. With a Mediterranean climate characterized by hot summers, this picturesque village experiences significant UV intensity—peaking at an impressive 11 around midday. By staying informed about UV levels, you can enjoy the beautiful sunshine while safeguarding your skin from potential damage.
The UV Index today showcases a dramatic rise in intensity as the day unfolds. Early morning hours are quite safe, with a maximum of 1 at 07:00 and 08:00, gradually increasing to 2 by 09:00. The sun reaches its zenith at 12:00, peaking at a striking 8, before hitting a blistering 11 at 14:00. For those planning outdoor activities, caution is advised between 12:00 and 15:00, as the UV levels are at their highest, reaching 10 by 13:00. As the afternoon wanes, the index begins to drop, settling at 6 by 17:00, and tapering off to 2 by 19:00. Embrace the morning sunlight safely, but remember to seek shade during those peak hours!
| 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 | 6 | high | 25 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 2 | low | 45 min |
Throughout the year, the UV Index demonstrates significant seasonal changes, with the highest risk occurring in the summer months of June and July, where the index reaches an extreme level of 12 and 11 respectively, necessitating only 10 minutes of exposure before risk of burns increases. Notably, April through September marks a period of very high to extreme UV levels, with May peaking at a UV Index of 10. Visitors and residents should exercise caution, particularly from March onwards, as the risk escalates rapidly; sunscreen application, protective clothing, and avoidance of direct sunlight during midday hours are strongly advised. Conversely, the winter months of December through February present a lower risk, with moderate UV levels, allowing for more extended outdoor activities with proper 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 |
| Castellar de Santiago | 3 | 5 | 6 | 9 | 10 | 12 | 11 | 10 | 9 | 7 | 4 | 3 |