Last updated: June 2, 2025
Awareness of the UV Index is crucial for residents of Guidonia Montecelio, Italy, where the sun's rays can be deceptively strong. In this temperate Csa climate, the UV levels can peak significantly—reaching a maximum of 10 around midday. Understanding these UV levels is essential for preventing sunburn and safeguarding skin health, particularly during the sunniest hours when the risk is highest. As you enjoy the beautiful weather in this charming town, staying informed about the UV Index will help you protect your skin and enjoy the outdoors safely.
The UV Index throughout the day showcases a notable rise, peaking at an impressive 10 between 1 PM and 2 PM. Starting from a mild 1 at 7 AM, sun lovers can expect a steady ascent, reaching 9 by noon. As the afternoon sun intensifies, the index holds a robust 10, signaling extreme UV exposure, before gradually tapering off to 4 by 5 PM and descending further to 1 by 7 PM. It's a classic reminder to stay protected during those peak hours, especially between 11 AM and 3 PM, when the sun's rays are most potent. Enjoy the sunshine, but don’t forget your sunscreen!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | low | 45 min |
| 09:00 | 4 | moderate | 30 min |
| 10:00 | 6 | high | 25 min |
| 11:00 | 8 | very high | 15 min |
| 12:00 | 9 | 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, UV exposure changes significantly, with the highest risk months occurring between May and September. During this period, the UV Index peaks at 10 in June and July, indicating a very high risk of harm from unprotected sun exposure, with a burn time of only 15 minutes. In contrast, the months of January and December have a much lower UV Index of 3 and 2 respectively, classified as moderate and low, allowing for longer exposure times of 30 and 45 minutes before burning occurs. Visitors and residents are advised to take preventive measures, especially during the high-risk months of March to September, including wearing sunscreen, protective clothing, and seeking shade during peak sunlight hours to minimize the risk of 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 |
| Guidonia Montecelio | 3 | 4 | 6 | 7 | 9 | 10 | 10 | 9 | 8 | 6 | 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 |