UV Index
UV Index
Today's UV index in Cascais, Portugal 
will be up to 8.1, indicating a very high level of sun exposure for the average person. Check our tips for today to make sure you're safe in the sun.
Last checked: 2025-06-23
With a UV index of 8.1 in Cascais, it's crucial to safeguard your skin from harmful UV rays. Protect yourself by minimizing sun exposure, wearing protective clothing, and applying SPF 30+ sunscreen every 2 hours.
The UV index in Cascais, Portugal, can reach high levels, especially during the summer months, often ranging from 7 to 10. In winter, the UV index is lower, typically between 2 and 5.
Cascais experiences mild, wet winters and warm, dry summers. Spring and autumn are pleasant with moderate temperatures and less rain. Summer temperatures often reach the mid-20s Celsius (mid-70s Fahrenheit).
Compared to other parts of Portugal, Cascais has a milder climate due to its coastal location. It is cooler and less rainy than inland areas. Nearby Spain's coastal regions have similar weather but can be hotter and drier in summer.
See the UV index hour by hour for Cascais, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.