Last updated: July 2, 2025
Understanding the UV Index in Castandiello, Spain is vital for maintaining skin health and preventing sunburn, especially as the region experiences a Csb climate characterized by warm summers. With UV levels peaking at 10 during the midday hours, awareness of these changes can help residents and visitors alike protect themselves from potential skin damage. By keeping an eye on the UV Index, you can enjoy the beautiful Spanish sun while ensuring your skin stays safe from harmful rays, making sun safety a priority in your daily outdoor activities.
As the sun rises, the UV Index begins its gradual ascent, peaking at an impressive 10 between 2 PM and 3 PM. Starting at a mild 1 at 7 AM and 8 AM, the index climbs steadily, hitting 3 by 10 AM and reaching 5 by 11 AM. The afternoon sun brings the strongest rays, with a 7 at noon, then soaring to 9 at 1 PM. Caution is advised during this peak, as UV levels dip slowly in the late afternoon; at 4 PM, it drops to 9, followed by a gentle decline to a comfortable 3 by 7 PM. Remember to protect your skin during the intense midday 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 | 7 | high | 25 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 10 | very high | 15 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 | 3 | moderate | 30 min |
The UV Index varies significantly throughout the year, with high-risk months identified from March to October where exposure categories reach high to extreme levels. The most intense UV radiation occurs in June with an index of 11, classified as extreme, resulting in a burn time of just 10 minutes. April, May, July, and August also present very high levels, so residents and visitors should take precautions during these months. It is advised to seek shade, wear protective clothing, and use sunscreen to mitigate risks, particularly during peak sun hours. As the year progresses, UV levels decline, with January and December showing low levels, making these months safer for outdoor activities. However, moderation and protection are key year-round.
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 |
| Castandiello | 2 | 4 | 6 | 8 | 9 | 11 | 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 |