Last updated: July 2, 2025
In San Silvestre de Guzman, Spain, being aware of the UV Index is crucial for maintaining skin health and preventing sunburn. Understanding the daily UV levels enables residents and visitors to make informed decisions about sun exposure, particularly during peak hours when the risk is at its highest. With a climate classified as Csa, this region often experiences intense sun, especially between 11:00 AM and 3:00 PM, when the UV Index can soar to an alarming 11—indicating a very high risk of harm from unprotected sun exposure. Stay informed and protect your skin with proactive measures tailored to the UV levels, ensuring a safe and enjoyable outdoor experience in this beautiful location.
The UV Index data reveals a clear pattern of increasing sun intensity throughout the day, peaking at 11 at 2 PM. Starting from a 0 at 7 AM, the levels gradually rise, hitting 1 by 8 AM and remaining low until 10 AM, when it climbs to 3. The sun's strength continues to escalate, reaching 7 by noon and ultimately landing at a high of 9 by 1 PM. As the afternoon progresses, the index begins to decline, settling at 10 by 3 PM and tapering off to 4 by 6 PM, before cooling down to 2 by 7 PM. This hourly UV Index trajectory highlights the importance of sun protection during the peak hours, especially between noon and 3 PM when the UV levels are at their most intense.
| 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 | 11 | extreme | 10 min |
| 15:00 | 10 | very high | 15 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, the UV Index experiences notable variations, with the highest risk months occurring from April to August. During this period, the UV Index peaks at 11 in June and July, categorizing these months as having extreme exposure levels with a burn time of just 10 minutes. In contrast, the lowest risk months are January and December, where the UV Index remains at 3, indicating a moderate risk with a burn time of 30 minutes. Visitors and residents are strongly advised to take precautions during peak months by applying sunscreen, wearing protective clothing, and seeking shade, particularly between 10 a.m. and 4 p.m. to minimize the risk of sunburn and 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 |
| San Silvestre de Guzman | 3 | 5 | 7 | 9 | 10 | 11 | 11 | 10 | 9 | 7 | 4 | 3 |
| Sevilla UVI | 3 | 5 | 7 | 9 | 10 | 11 | 10 | 10 | 9 | 7 | 4 | 3 |