Last updated: May 3, 2025
Understanding the UV Index is crucial for residents and visitors of Koroni, Greece, where the Mediterranean climate brings beautiful sunshine and potential risks. With peak UV levels reaching as high as 9 during midday, being aware of these measurements is essential for sunburn prevention and overall skin health. As you bask in the warm rays while enjoying the picturesque scenery, remember that knowledge of UV levels can help you protect yourself from harmful effects, making your time in this charming coastal town both enjoyable and safe. Stay informed and keep your skin safe from the sun's intensity!
The UV Index today showcases a significant rise in sunlight intensity, peaking around 12:00 PM to 2:00 PM with a striking 9. Early morning hours start off modestly, with values of 1 at 7:00 AM and 8:00 AM, gradually increasing to 3 by 9:00 AM. As the day heats up, it climbs to 4 by 10:00 AM and surges to 7 by 11:00 AM. This upward trend continues until it reaches its zenith at 9, indicating a higher risk of harm from unprotected sun exposure. After this peak, the index starts to decline, slipping to 8 by 3:00 PM and then tapering off to 4 by 5:00 PM. As the evening unfolds, the UV levels drop to 2 at 6:00 PM and settle back at 1 by 7:00 PM, reminding us of the importance of protection during midday hours when the sun is most aggressive.
| 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 | 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, 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 |