Last updated: July 2, 2025
Understanding the UV Index is essential for residents and visitors of Serifos, Greece, especially during the warm, sun-soaked summer months typical of this Csa climate zone. Being aware of UV levels helps you take proactive measures against sunburn, ensuring the health of your skin while enjoying the stunning shores of the Aegean Sea. The UV Index in Serifos can reach as high as 10 during peak hours—specifically between 12:00 PM and 2:00 PM—which poses significant risks for unprotected skin. By staying informed about these levels, you can relish the beauty of Serifos while prioritizing your sun safety.
As the sun rises, the UV Index begins its gentle ascent, starting at 1 at 07:00. By 09:00, it climbs to 3, hinting at the day's potential for sun exposure. The heat peaks around 12:00, reaching a blistering 9, and hits its maximum at 13:00 and 14:00, both at a high of 10—a critical time for sun safety. As the afternoon transitions to evening, the UV Index gradually dips; by 18:00, it's down to 2, and as twilight approaches, it settles back at 1 by 19:00. Plan your outdoor activities wisely to stay safe in the sun!
| 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 | 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 does the UV Index, indicating varying levels of sun exposure risk throughout the year. From January to February, the UV levels are moderate (3-5), allowing for longer safe exposure times of about 30 minutes. However, as we move into March and through summer months, the UV Index soars to high (7) and very high (8-10) levels, particularly from April to August, when the burn time decreases sharply to just 15 minutes. September marks a slight decline in UV intensity but remains very high at 8. In contrast, October through December sees a return to moderate levels, with burn times reverting to 25-30 minutes. Visitors and residents should exercise caution during the high-risk months of April through September, taking protective measures such as wearing sunscreen, hats, and sunglasses, and seeking shade during peak sun hours to minimize 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 |
| 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 |
| Serifos | 3 | 5 | 7 | 8 | 9 | 10 | 10 | 10 | 8 | 7 | 4 | 3 |