Last updated: August 1, 2025
Understanding the UV Index in Santiuste de San Juan Bautista, Spain, is crucial for maintaining skin health and preventing sunburn. With a climate that boasts warm summers and mild winters, residents and visitors alike must be aware of the potential for high UV exposure, especially during peak hours. As the UV levels can reach a maximum of 11 around midday, knowing when to seek shade and apply sunscreen is essential for protecting your skin from harmful rays. By staying informed about the UV Index, you can enjoy the beautiful sunshine while minimizing the risks associated with sun exposure.
As the sun rises, the UV Index begins its gradual ascent, starting at a gentle 1 by 7:00 AM and maintaining that level until 9:00 AM. By 10:00 AM, it reaches a moderate 3, signaling the need for light protection. However, from 11:00 AM onward, the intensity ramps up significantly, peaking at an intense 11 by 2:00 PM. This hour marks the highest point of the day, urging everyone to take extra precautions against harmful UV rays. As the afternoon wanes, the index gradually declines, settling to a comfortable 4 by 6:00 PM and diminishing to a final 2 by 7:00 PM. Be mindful of the sun's power during peak hours to ensure a safe and enjoyable day outdoors!
| 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, seasonal variations in the UV Index indicate a significant shift in sun exposure risks. From January to February, UV levels remain in the moderate category, with a burn time of 30 minutes. However, as spring begins in March, the index rises to high, necessitating shorter exposure times of 25 minutes. The most critical months for UV exposure are April through August, where the index peaks at extreme levels of 11 in June and July, offering burn times as brief as 10 minutes. After this peak, UV levels gradually decline but remain very high until September. As temperatures cool into October and beyond, the risk decreases, with November and December reflecting moderate and low exposure risks respectively. Visitors and residents are advised to take precautions, especially during the high-risk months of April, May, June, and July, by seeking shade, wearing protective clothing, and applying sunscreen regularly to mitigate the risks of sunburn and long-term skin damage.
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 |
| Santiuste de San Juan Bautista | 3 | 4 | 7 | 9 | 10 | 11 | 11 | 10 | 8 | 6 | 4 | 2 |
| Sevilla UVI | 3 | 5 | 7 | 9 | 10 | 11 | 10 | 10 | 9 | 7 | 4 | 3 |