Last updated: July 2, 2025
In Castelvetrano, Italy, awareness of the UV Index is crucial for maintaining skin health and preventing sunburn. As the sun's rays become stronger throughout the day, understanding the UV levels can help residents and visitors alike make informed decisions about sun protection. During the summer months, Castelvetrano enjoys a Mediterranean climate (Csa) with typically high UV exposure, especially from late morning to early afternoon when the index peaks at 10. By staying vigilant about the UV Index, you can enjoy the beautiful Italian sunshine while safeguarding your skin from harmful effects.
At dawn, 7:00 AM, the UV Index is a mild 1, offering a gentle start to the day. As the sun climbs higher, it steadily rises, reaching 2 by 8:00 AM and hitting 3 at 9:00 AM. However, between 10:00 AM and 1:00 PM, the intensity increases sharply, peaking at an impressive 10 from 12:00 PM to 1:00 PM—the highest level of risk. The UV Index then begins its descent, dropping to 8 at 3:00 PM, followed by a gradual decline to 4 by 5:00 PM. As evening approaches, the index wanes further, settling back down to 1 by 7:00 PM. To enjoy the sunshine while staying safe, make sure to take precautions, especially during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 10 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 8 | very high | 15 min |
| 16:00 | 6 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, the UV Index shows significant seasonal changes, reaching its peak during the summer months. From January to February, UV levels are moderate, with a burn time of 30 minutes. As spring approaches, March sees an increase to a high index of 6, decreasing burn time to 25 minutes. April to August are considered high-risk, featuring very high UV levels of 8 to 10 and a burn time of just 15 minutes, making sun protection essential during these months. In September, the UV Index drops slightly to 8, while in October, it remains high at 7 with a burn time of 25 minutes. The UV levels then decline again in late fall and winter, returning to moderate levels of 3 to 4 by November and December. Visitors and residents are advised to take extra precautions during April to August, including wearing sunscreen, protective clothing, and seeking shade during peak hours to minimize the risk of UV exposure and skin damage.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Milan UVI | 2 | 3 | 5 | 6 | 8 | 9 | 9 | 8 | 6 | 5 | 3 | 2 |
| Turin UVI | 2 | 3 | 6 | 7 | 8 | 10 | 9 | 9 | 7 | 5 | 3 | 2 |
| Rome UVI | 3 | 4 | 5 | 7 | 8 | 10 | 10 | 9 | 7 | 5 | 4 | 2 |
| Naples UVI | 3 | 4 | 6 | 7 | 9 | 10 | 10 | 9 | 8 | 6 | 4 | 2 |
| Palermo UVI | 3 | 5 | 6 | 8 | 9 | 10 | 10 | 9 | 8 | 7 | 4 | 3 |
| Castelvetrano | 3 | 5 | 6 | 8 | 9 | 10 | 10 | 10 | 8 | 7 | 4 | 3 |