Last updated: May 3, 2025
Understanding the UV Index is essential for residents and visitors of Gastouni, Greece, where the warm Mediterranean climate can lead to varying levels of sun exposure throughout the day. With peak UV levels reaching up to 9 around midday, awareness of these numbers is crucial for preventing sunburn and maintaining long-term skin health. As a town within the Csa climate zone, Gastouni faces significant risks from UV radiation, especially during the summer months. Grasping the implications of the UV Index can help you enjoy the beautiful Greek sun safely and responsibly.
As the sun rises, the UV Index begins its steady climb, starting from a mild 1 at 07:00 and remaining low throughout the morning. By 09:00, it reaches 2, but the real action begins around 10:00 when it surges to 4. The peak of the day occurs between 12:00 and 14:00, with an impressive high of 9, indicating a potent sun that demands attention and protection. As the afternoon wanes, the index gradually drops—first to 8 at 15:00, then gently declining to 6 by 16:00. The evening sun softens its glare, with the index falling to 2 at 18:00 and finally settling back to 1 by 19:00. It’s a day to embrace the sun wisely, with the highest intensity reminding us to stay protected during peak 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 | 4 | moderate | 30 min |
| 11:00 | 6 | high | 25 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 9 | very high | 15 min |
| 14:00 | 9 | 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Thessaloniki UVI | 3 | 4 | 6 | 7 | 9 | 10 | 9 | 9 | 7 | 6 | 4 | 2 |
| Larisa UVI | 3 | 4 | 6 | 8 | 10 | 11 | 10 | 10 | 8 | 6 | 4 | 3 |
| Patra UVI | 3 | 5 | 6 | 8 | 10 | 11 | 10 | 10 | 8 | 6 | 4 | 3 |
| Gastouni | 3 | 5 | 6 | 8 | 9 | 10 | 10 | 10 | 8 | 7 | 4 | 3 |
| Piraeus UVI | 3 | 4 | 6 | 8 | 10 | 10 | 10 | 10 | 8 | 7 | 4 | 3 |
| Athens UVI | 3 | 4 | 6 | 8 | 10 | 10 | 10 | 10 | 8 | 7 | 4 | 3 |