Last updated: July 2, 2025
In Negreira, Spain, understanding the UV Index is crucial for everyone, especially as the warm sun graces this charming region. The UV levels can rise significantly throughout the day, peaking at 9 during midday, which can lead to sunburn and long-term skin health issues if not properly managed. With a Csb climate, typically characterized by moderate temperatures and varying cloud cover, residents and visitors alike must remain vigilant about their sun exposure. By paying attention to the UV Index, you can enjoy the beauty of Negreira while protecting your skin from harmful rays.
The UV Index throughout the day exhibits a fascinating trend, starting low in the morning with a steady 1 from 07:00 to 09:00. As the sun climbs higher, the index gains intensity, reaching 3 by 10:00 and escalating to a moderate 4 at 11:00. The real heat hits during midday, with values soaring to 6 at 12:00, peaking at an impressive 9 between 14:00 and 15:00. This powerful exposure begins to taper off in the afternoon, dropping to 8 at 16:00, then 7 by 17:00. As daylight wanes, the index declines further to 4 at 18:00 and concludes the day at 3 by 19:00. Be sure to protect your skin during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 1 | low | 45 min |
| 10:00 | 3 | moderate | 30 min |
| 11:00 | 4 | moderate | 30 min |
| 12:00 | 6 | high | 25 min |
| 13:00 | 8 | very high | 15 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 8 | very high | 15 min |
| 17:00 | 7 | high | 25 min |
| 18:00 | 4 | moderate | 30 min |
| 19:00 | 3 | moderate | 30 min |
As the seasons change, so does the UV Index, which is crucial for understanding sun exposure risks throughout the year. January and December show the lowest UV levels (Index 2), indicating a low risk of harm, with a burn time of 45 minutes. However, from February to October, UV levels steadily increase, peaking in June at an Index of 10, corresponding to a very high exposure category and a burn time of just 15 minutes. The high-risk months are from April to August, where the UV Index remains at 8 or higher, making it essential for visitors and residents to take precautions such as wearing sunscreen, protective clothing, and seeking shade during peak sunlight hours. September and October see a slight decline, yet caution remains warranted with high levels persisting. From November to February, the risk decreases significantly, though awareness should still be maintained during those transitioning months.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Negreira | 2 | 4 | 6 | 8 | 8 | 10 | 9 | 9 | 7 | 6 | 3 | 2 |
| 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 |
| Sevilla UVI | 3 | 5 | 7 | 9 | 10 | 11 | 10 | 10 | 9 | 7 | 4 | 3 |