Last updated: August 1, 2025
Understanding the UV Index is crucial for residents and visitors in Justel, Spain, a charming town with a Csb climate that brings both mild summers and intense sunlight. Recognizing UV levels throughout the day is vital for preventing sunburn and maintaining skin health, especially when midday readings peak at a high of 10. With the sun strongest between 11 AM and 3 PM, it’s essential to be aware of potential risks. By staying informed about local UV exposure, you can enjoy the sunny days while safeguarding your skin.
As the sun rises, the UV Index begins to creep up, starting at a modest 1 at 7:00 AM and 8:00 AM. By 9:00 AM, it reaches 2, and soon after, it climbs to 3 at 10:00 AM. The real intensity hits at 11:00 AM, with the index jumping to 5. Noon marks the peak, soaring to 7, and it only intensifies from there. At 1:00 PM, the UV Index spikes to 9, and by 2:00 PM, it reaches a maximum of 10—a critical level warranting sun safety precautions. This intensity holds steady until 3:00 PM, after which the UV Index starts to decline, dropping gradually to 9 by 4:00 PM, then 7 at 5:00 PM. As the day winds down, the UV levels retreat further, settling at 5 by 6:00 PM, and ending the day with a gentle 3 at 7:00 PM. Remember, the midday sun is the strongest—stay protected!
| 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 | 2 | low | 45 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 | 6 | high | 25 min |
| 18:00 | 4 | moderate | 30 min |
| 19:00 | 2 | low | 45 min |
Throughout the year, seasonal changes in UV Index highlight significant variations in sun exposure risk. January and December see a low UV Index of 2, allowing for safer outdoor activities with a burn time of 45 minutes. However, as spring approaches, February and March indicate a shift to moderate to high exposure, transitioning to very high levels in April and May with indices reaching 8 and 10 respectively. The peak months of June and July present an extreme UV Index of 11, underscoring the necessity for sun protection, as the burn time drops to 10 minutes. August and September maintain a very high category but begin to taper off, while October reduces to high and November returns to moderate levels. It is crucial for both residents and visitors to note that the high-risk months are from April to September, and during these months, taking precautions such as wearing sunscreen, protective clothing, and seeking shade is essential to prevent 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 |
| Justel | 2 | 4 | 6 | 8 | 10 | 11 | 10 | 9 | 8 | 6 | 4 | 2 |
| 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 |