Last updated: May 3, 2025
In Grândola, Portugal, staying aware of the UV Index is crucial for protecting your skin and overall health. Understanding UV levels helps you make informed decisions about sun exposure, minimizing the risk of painful sunburns and long-term skin damage. With Grândola's Mediterranean climate, characterized by warm summers and plentiful sunshine, the UV Index can peak at 10 during midday hours, signaling a high risk for harm. By monitoring this vital information, you can enjoy the beautiful outdoors while safeguarding your skin's well-being.
The UV Index chart reveals a dynamic daily pattern of solar intensity. Starting early in the day, the UV Index remains low, peaking at 1 by 08:00. However, as the sun reaches its zenith, the index surges dramatically—hitting 7 by 11:00 and soaring to a maximum of 10 between 13:00 and 14:00. This signals a critical window for sun exposure, where protection is essential. As the afternoon progresses, the UV levels begin to decline, dropping to 4 by 17:00, before tapering off to 1 again by evening. To stay safe, it's vital to be cautious 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 | 2 | low | 45 min |
| 19:00 | 1 | low | 45 min |
Throughout the year, UV index levels exhibit notable seasonal changes, with the highest risks occurring from April to September. April (UV Index 9) marks the beginning of very high exposure, escalating to an extreme level (UV Index 11) in June, where burn times are as short as 10 minutes. Monthly UV indices frequently remain in the very high category (UV Index 9-10) through July and August before tapering off in September. During these months, residents and visitors should take proactive measures such as wearing sunscreen, protective clothing, and limiting sun exposure, particularly between 10 AM and 4 PM. As exposure decreases in the fall and winter months, with UV Index values dropping to moderate levels (UV Index 3-5), individuals should still practice sun safety, especially on clear days.
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 |
| Grandola | 3 | 5 | 6 | 9 | 10 | 11 | 10 | 9 | 9 | 6 | 4 | 3 |