Last updated: July 2, 2025
Understanding the UV Index in Sestu, Italy is crucial for ensuring your skin's health and preventing sunburn. With a Mediterranean climate characterized by warm summers, residents and visitors alike face varying UV exposure risks throughout the day. At peak times, particularly between 11:00 AM and 3:00 PM, the UV Index can soar up to 10, indicating a high risk of harm from unprotected sun exposure. By staying informed about these levels, you can take necessary precautions to protect your skin, enabling you to enjoy the beautiful weather in Sestu safely and comfortably.
The UV Index chart reveals a dynamic daily pattern of solar intensity. Starting early in the day, the UV Index remains low, peaking at 1 by 08:00. However, as the sun reaches its zenith, the index surges dramatically—hitting 7 by 11:00 and soaring to a maximum of 10 between 13:00 and 14:00. This signals a critical window for sun exposure, where protection is essential. As the afternoon progresses, the UV levels begin to decline, dropping to 4 by 17:00, before tapering off to 1 again by evening. To stay safe, it's vital to be cautious during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 3 | moderate | 30 min |
| 10:00 | 5 | moderate | 30 min |
| 11:00 | 7 | high | 25 min |
| 12:00 | 9 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 10 | very high | 15 min |
| 15:00 | 9 | very high | 15 min |
| 16:00 | 7 | 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 experiences notable fluctuations, highlighting varying levels of sun exposure risk. The high-risk months for UV exposure are from March to September, with April through August showing very high UV Index levels, peaking at 10 during June and July. In these months, the recommended burn time decreases to just 15 minutes, necessitating caution and preventive measures. Visitors and residents are advised to take extra care during these peak months by wearing protective clothing, applying broad-spectrum sunscreen, and seeking shade during the hottest parts of the day. Conversely, during the winter months of January, February, November, and December, the UV Index remains at a moderate level, allowing for longer exposure times of approximately 30 minutes before burns may occur. While vigilance is always important, the risk of sunburn is significantly higher during late spring and summer, warranting additional sun safety precautions.
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 |
| Sestu | 3 | 4 | 6 | 8 | 9 | 10 | 10 | 9 | 8 | 6 | 4 | 3 |
| Palermo UVI | 3 | 5 | 6 | 8 | 9 | 10 | 10 | 9 | 8 | 7 | 4 | 3 |