Last updated: July 2, 2025
Understanding the UV Index is crucial for residents of San Jose, Spain, where the sun’s rays can be particularly intense, especially during the peak hours of the day. With a BSk climate characterized by warm summers and ample sunshine, awareness of UV levels helps prevent sunburn and protect against long-term skin damage. The UV Index in San Jose can soar to a high of 11 around midday, underscoring the importance of being informed and taking appropriate precautions to safeguard your skin health. Stay aware, stay protected, and enjoy the Spanish sun safely!
The UV Index data for the day reveals a dynamic rise in solar intensity throughout the morning and afternoon. Starting at a mild 1 at 07:00, the index gradually climbs to 6 by 11:00. As the sun reaches its zenith, the UV Index peaks at a striking 11 at 14:00, indicating an extreme level of exposure. By 15:00, it remains high at 10, gradually decreasing to 4 by 18:00 and settling at 2 by 19:00. It's clear that midday hours present the most significant risk for skin damage; therefore, sun protection is highly recommended between 12:00 and 15:00 when the UV Index is at its peak.
| 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 | 3 | 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 | 11 | extreme | 10 min |
| 15:00 | 10 | 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, UV levels change significantly, influencing sun exposure safety for visitors and residents. High-risk months occur from April to August, with particularly intense UV Index levels peaking at 11 in June and July, categorized as extreme. During these months, the recommended burn time drops to just 10 minutes, underscoring the need for vigilant sun protection. In contrast, the UV Index remains at more moderate levels (3 to 5) during the winter months of January, February, and December, allowing for longer exposure times of up to 30 minutes without burning. To ensure safety, it is advisable for everyone to be mindful of UV levels, especially during high-risk months, by wearing sunblock, protective clothing, and seeking shade whenever possible.
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 |
| San Jose | 3 | 5 | 6 | 8 | 10 | 11 | 11 | 9 | 8 | 7 | 4 | 3 |
| Sevilla UVI | 3 | 5 | 7 | 9 | 10 | 11 | 10 | 10 | 9 | 7 | 4 | 3 |