Last updated: July 2, 2025
In Santa Comba Dao, Portugal, being aware of the UV Index is crucial for protecting your skin and overall health. Understanding UV levels can help you take proactive measures against sunburn and long-term skin damage, especially during the peak hours when UV radiation is at its highest. With a Csb climate, Santa Comba Dao experiences considerable variation in sunlight, particularly during the summer months, making it essential to stay informed about daily UV exposure risks. From 10 AM to 4 PM, when the UV Index soars to levels of 9 and 10, even a short stroll outdoors can put you at risk if proper precautions aren't taken. Stay safe and enjoy the sun wisely!
The UV Index for the day showcases a striking ascent in intensity, peaking during the afternoon hours. Starting from a low of 1 at 07:00 and 08:00, the index swiftly climbs to reach 3 by 09:00. By 10:00, it escalates to a moderate 5, but the real surge occurs between 11:00 and 14:00, hitting a maximum of 10—indicating a high risk of harm from unprotected sun exposure. As the day progresses, the UV Index gradually drops, retracting to 4 by 17:00 and further declining to 1 by 19:00. It's crucial to stay protected during those peak hours!
| 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 | 9 | very high | 15 min |
| 16:00 | 7 | high | 25 min |
| 17:00 | 4 | moderate | 30 min |
| 18:00 | 3 | moderate | 30 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, seasonal changes in UV Index reveal significant fluctuations in sun exposure and risk levels. The months of March through September present the highest UV levels, with April through June reaching the peak UV Index of 11 in June, categorized as extreme, while May and July also remain dangerously high. High-risk months for sunburn are clearly identified as April to September, where the burn time decreases sharply to as little as 10 minutes in June. As such, it is crucial for both visitors and residents to take precautionary measures during these months. This includes wearing sunscreen, donning protective clothing, and seeking shade during peak hours, particularly from late morning to mid-afternoon, to mitigate skin damage and health risks associated with UV exposure.
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 |
| Santa Comba Dao | 3 | 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 |