Last updated: May 3, 2025
In Sao Jorge, Portugal, awareness of the UV Index is crucial for safeguarding your skin health in this picturesque yet sun-kissed island. Understanding UV levels helps residents and visitors alike to prevent sunburn and long-term skin damage, making sun safety a priority during outdoor activities. With a Csb climate, Sao Jorge experiences warm summers and mild winters, but UV exposure can reach concerning levels, particularly between 11:00 AM and 3:00 PM, when the index peaks at 11. By staying informed about the daily UV Index, you can enjoy the island's beauty while protecting your skin from harmful rays.
As the sun rises, the UV Index begins its steady ascent. At 07:00, it starts at a tranquil 0, but by 08:00, it nudges up to 1, signaling the need for a bit of caution. The climb continues, reaching 2 by 09:00, and quickly ramps up to 3 by 10:00. The real intensity hits at 11:00, with a spike to 6, and by 12:00, it soars to 8. The peak occurs at 13:00 with a striking 10, making midday the most sun-sensitive time. It escalates slightly to 11 at 14:00, before gradually tapering off to 10 at 15:00. By late afternoon, the UV Index drops to 8 at 16:00, 6 at 17:00, and settles down to 3 by 18:00. As the day fades, it continues to decline, ending at a gentle 2 by 19:00. This pattern shows the importance of sun safety during those peak hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 0 | low | 45 min |
| 08:00 | 1 | low | 45 min |
| 09:00 | 2 | low | 45 min |
| 10:00 | 3 | moderate | 30 min |
| 11:00 | 6 | high | 25 min |
| 12:00 | 8 | very high | 15 min |
| 13:00 | 10 | very high | 15 min |
| 14:00 | 11 | extreme | 10 min |
| 15:00 | 10 | very high | 15 min |
| 16:00 | 8 | very high | 15 min |
| 17:00 | 6 | high | 25 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 2 | low | 45 min |
Throughout the year, the UV Index demonstrates significant seasonal variation, with high-risk months primarily occurring from March to August when values reach their peak. Notably, May through July feature extreme UV Index levels (11-12), with a burn time as short as 10 minutes. This indicates that during these months, individuals should take extra precautions, such as wearing sunscreen, protective clothing, and seeking shade during peak sun hours. Conversely, in January and December, with a moderate UV Index of 4, burn times extend to 30 minutes, suggesting lower risk for sunburn. Visitors and residents are encouraged to remain vigilant and adjust their sun exposure habits in accordance with these fluctuations throughout the year to protect their skin health.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Braga UVI | 2 | 4 | 6 | 8 | 9 | 11 | 10 | 9 | 8 | 6 | 4 | 2 |
| Porto UVI | 2 | 4 | 6 | 8 | 9 | 11 | 10 | 9 | 8 | 6 | 4 | 2 |
| Amadora UVI | 3 | 5 | 6 | 9 | 10 | 11 | 10 | 9 | 8 | 6 | 4 | 3 |
| Lisbon UVI | 3 | 5 | 6 | 9 | 10 | 11 | 10 | 9 | 8 | 6 | 4 | 3 |
| Setubal UVI | 3 | 5 | 6 | 9 | 10 | 11 | 10 | 9 | 8 | 6 | 4 | 3 |
| Sao Jorge | 4 | 6 | 8 | 10 | 11 | 12 | 11 | 11 | 10 | 8 | 6 | 4 |