Last updated: August 1, 2025
Understanding the UV Index in Arenas de San Juan, Spain, is crucial for safeguarding your skin health and preventing sunburn. As you bask in the Mediterranean climate characterized by hot summers and mild winters, awareness of daily UV levels can help you make informed decisions about sun exposure. With peak values soaring to 11 between 1 PM and 3 PM, it’s essential to take proactive measures to protect yourself during the sun’s strongest hours. By knowing the UV Index, you can enjoy the beautiful sun-kissed days in Arenas de San Juan while keeping your skin safe and healthy.
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 | 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 | 4 | moderate | 30 min |
| 19:00 | 2 | low | 45 min |
Throughout the year, the UV Index fluctuates significantly, indicating varying levels of sun exposure risk. The high-risk months are typically from March to October, with April and May peaking at a very high index of 9 and 10, and reaching an extreme level of 12 in June and July. During these months, the risk of skin damage from sun exposure increases significantly, with recommended burn times decreasing to as little as 10 minutes. Visitors and residents are advised to take precautions by wearing protective clothing, applying sunscreen regularly, and seeking shade during peak sunlight hours, especially in the summer months. As the UV levels decline from October to February, while still moderate, it remains important to remain vigilant about sun protection during 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 |
| Arenas de San Juan | 3 | 4 | 6 | 9 | 10 | 12 | 11 | 10 | 9 | 7 | 4 | 3 |
| Sevilla UVI | 3 | 5 | 7 | 9 | 10 | 11 | 10 | 10 | 9 | 7 | 4 | 3 |