Last updated: June 2, 2025
In Castrillo de la Vega, Spain, being aware of the UV Index is crucial for safeguarding your skin health and preventing sunburn. With a Mediterranean climate characterized by warm summers and varied sunlight exposure, understanding UV levels is vital for outdoor activities. During peak hours, particularly around midday, the UV Index can soar to a significant 11, indicating an extreme risk of harm from unprotected sun exposure. By staying informed about the UV Index, residents and visitors alike can take essential precautions to enjoy the beautiful Spanish outdoors while protecting their skin from potential damage.
The UV Index shows a dynamic fluctuation throughout the day, starting at a mild 1 early in the morning (07:00 and 08:00) and gradually rising to a moderate 2 by 09:00. However, as the sun climbs higher, the intensity escalates dramatically, peaking at a striking 11 between 13:00 and 15:00—indicative of a high risk for harm from unprotected sun exposure. After reaching its zenith, the index gracefully tapers off, dropping to 9 by 16:00 and ultimately settling at a more manageable 2 by 19:00. It’s a day that demands attention to sun safety, particularly in the 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 | 4 | moderate | 30 min |
| 11:00 | 6 | high | 25 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 11 | extreme | 10 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 experience significant fluctuations, with the high-risk months ranging from March to September. During these months, especially in April and May, the UV Index rises to 8 and 10, indicating very high levels that can lead to skin damage. June and July peak at an extreme UV Index of 11, necessitating extra caution. Visitors and residents are advised to take protective measures, such as using broad-spectrum sunscreen, wearing protective clothing, and seeking shade during peak sun hours, particularly when the burn time drops to as little as 10 minutes. In contrast, the winter months of December and January present lower UV levels, with indices of 2 and 3, allowing for more extended safe sun exposure of up to 45 minutes. Be vigilant about UV exposure, especially as the seasons change.
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 |
| Castrillo de la Vega | 3 | 4 | 6 | 8 | 10 | 11 | 11 | 10 | 8 | 6 | 4 | 2 |
| 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 |