Last updated: July 2, 2025
Understanding the UV Index in Koroni, Greece, is crucial for anyone looking to enjoy the sun safely. With its Mediterranean climate, Koroni experiences significant UV exposure, especially during peak hours. Knowing the UV levels is essential not just for preventing painful sunburns, but also for maintaining long-term skin health. As the UV Index rises throughout the day, hitting a peak of 10 around midday, it's vital to take protective measures. Whether lounging by the sea or exploring the charming town, awareness of the UV Index can help you savor the beauty of Koroni while safeguarding your skin.
The UV Index data reveals a striking progression throughout the day. Early risers at 07:00 and 08:00 will experience a low UV Index of 1, making it a safe window for outdoor activities. However, as the day unfolds, 9:00 sees a jump to 3, which hints at increasing sun intensity. The real peak occurs between 12:00 and 14:00, where the UV Index hits its maximum at 10—a critical period for sun exposure, urging caution for those outdoors. As the afternoon transitions to evening, the index gradually drops, settling back to a more manageable 1 by 19:00. This data highlights the importance of sun safety during the midday hours, as the sun's rays can be particularly harsh.
| 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 | 4 | 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, UV exposure levels fluctuate significantly, with the highest risk occurring during the late spring and summer months. From March to September, the UV Index reaches alarming levels, peaking at 10 from June to August. This signifies a very high exposure category, where the average burn time is a mere 15 minutes. The high-risk months include April through September, urging visitors and residents to exercise caution. It is advisable to seek shade, wear protective clothing, and apply sunscreen during these critical months. In contrast, the winter months of January, February, November, and December show a moderate UV Index of 3 to 5, where burn times extend to 30 minutes. Nevertheless, even in these months, taking preventive measures against UV exposure is beneficial.
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 |
| 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 |
| Koroni | 3 | 5 | 6 | 9 | 9 | 10 | 10 | 10 | 8 | 7 | 4 | 3 |