Last updated: July 2, 2025
Understanding the UV Index in Astypalaia, Greece, is crucial for protecting yourself from harmful ultraviolet radiation. The UV Index provides vital information about sun exposure risk, helping residents and visitors alike prevent sunburn and maintain healthy skin. With a Mediterranean climate characterized by long, sunny days, Astypalaia presents unique UV challenges, especially during peak hours when the index soars to a high of 10 around midday. By staying informed about UV levels, you can enjoy the island's beautiful surroundings while safeguarding your skin from potential damage. Take care and stay sun-smart!
The UV index begins its ascent at 07:00, starting at a gentle 1, then climbs gradually through the morning. By 10:00, it reaches a moderate 5, but from 11:00 onwards, the sun's intensity becomes pronounced, peaking at an impressive 10 between 13:00 and 14:00. After this zenith, the index dips to 8 at 15:00 and continues its decline, settling back to 2 by 18:00. As the day winds down into the evening, the UV index drops to a low 1 by 19:00, signaling a return to safer sun exposure levels. Enjoy the sunshine while staying protected during the high points!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 2 | 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 | 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 |
As the seasons change, so do the UV Index levels, which indicate the intensity of ultraviolet radiation. January and December have moderate UV levels (3), requiring about 30 minutes of sun exposure before the risk of burning increases. February sees an uptick to a UV Index of 5, maintaining a similar burn time. From March through October, the UV Index escalates, peaking at 10 from May to August, classifying these months as very high risk with a burn time of just 15 minutes. April also falls into the very high category with a UV Index of 9. As fall approaches, September sees a slight decrease to 8, while October returns to a high level of 7. The high-risk months to be especially cautious are from March to October, where prolonged sun exposure can lead to skin damage. Visitors and residents are advised to take protective measures, such as wearing sunscreen, protective clothing, and seeking shade, particularly during these peak months.
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 |
| Astypalaia | 3 | 5 | 7 | 9 | 10 | 10 | 10 | 10 | 8 | 7 | 4 | 3 |