Last updated: July 2, 2025
Understanding the UV Index is crucial for residents and visitors in Sant Jordi, Spain, where the Mediterranean climate fosters ample sunshine but also presents significant risks of overexposure. Knowing the UV levels throughout the day can help you prevent sunburn and protect your skin's health. In Sant Jordi, where peak UV Index values reach 10 around noon, awareness becomes essential for safe outdoor activities, especially during the warmer months. Being informed empowers you to enjoy the beautiful sunny days while minimizing the risk of harmful UV radiation.
As the sun climbs higher in the sky, the UV Index begins its ascent, starting from a mild level of 1 at 07:00 and gradually building momentum. By 10:00, it reaches a moderate 4, signaling a need for caution. The intensity peaks at 12:00 and 13:00, where it hits a striking 8 and a scorching 10, indicating a heightened risk for sunburn. As the afternoon progresses, the index begins to taper off, dipping to 9 at 15:00, then gradually declining to 3 by 18:00. This hourly UV data serves as a reminder to stay protected during those critical midday hours when the sun’s rays are most potent.
| 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 | 8 | very high | 15 min |
| 13:00 | 10 | 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 |
The UV Index exhibits significant seasonal changes, with high-risk months typically occurring from April to September. During this period, UV levels rise, reaching a peak in June with an extreme index of 11 and a burn time of only 10 minutes. In contrast, January and February see moderate levels (UV Index 3 and 4) and longer burn times of 30 minutes. As the season progresses, residents and visitors are advised to take precautions, especially during high UV days in April (8), May (9), July (10), and August (9), where it’s crucial to wear sunscreen, protective clothing, and seek shade during peak hours. As fall approaches, the UV Index gradually declines, offering more moderate levels in October and lower risks in the winter months, allowing for safer outdoor activity.
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 |
| Sant Jordi | 3 | 4 | 5 | 8 | 9 | 11 | 10 | 9 | 8 | 6 | 4 | 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 |