Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors of San Millan de Lara, Spain, where the climate is classified as Cfb—characterized by mild temperatures and considerable sun exposure throughout the year. By being aware of the UV levels, individuals can take proactive steps towards sunburn prevention and overall skin health. With midday UV Index levels peaking as high as 10, it’s essential to recognize the risks and protect yourself from harmful effects, especially during the warmer months when outdoor activities are in full swing. Stay informed, stay safe, and enjoy the sun responsibly!
As the day unfolds, the UV Index rises dramatically, showcasing the sun’s power. Starting off at a gentle 1 by 07:00, it gradually climbs to 5 by 11:00. The real intensity kicks in around noon with a peak of 10 at 14:00—a strong reminder to protect your skin! The index begins to wane as the afternoon wears on, dropping to 6 by 17:00 and continuing to fall to 2 by 19:00. It’s a vivid illustration of how the sun's potency evolves throughout the day, urging us to stay sun-smart during those peak hours.
| 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 | 5 | moderate | 30 min |
| 12:00 | 8 | very high | 15 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 |
The UV Index exhibits significant seasonal variation, peaking during the summer months. January to February shows a moderate risk with an index of 3 to 4, allowing for approximately 30 minutes of safe exposure. As spring arrives, March increases to a high index of 6, reducing safe exposure time to 25 minutes. The risk escalates rapidly in April and May, reaching very high levels of 8 and 10 respectively, necessitating protective measures after 15 minutes in the sun. June presents the most extreme UV conditions with an index of 11—with a mere 10 minutes of safe exposure—making this the highest risk month. July and August remain critical with 10 and 9, while September sees a slight decline to 8. As autumn descends, October returns to a high index of 6, then drops to moderate in November and low by December. Visitors and residents are advised to take precautions during April through September, including using sunscreen, wearing protective clothing, and seeking shade during peak sun hours.
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 |
| San Millan de Lara | 3 | 4 | 6 | 8 | 10 | 11 | 10 | 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 |