UV Index
UV Index
Today's UV index in Porto, Portugal 
will be up to 6.3, indicating a 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: 2025-05-10
With Porto's UV index reaching 6.3, protect your skin from harm by staying in shade, wearing protective clothing, and applying SPF 30+ sunscreen every 2 hours, especially between 10 a.m. and 4 p.m. when UV rays are strongest.
Porto's UV index is usually moderate, ranging from about 3 in winter to around 8 or 9 in summer, meaning the sun is stronger in summer months.
The city has mild, rainy winters and warm, dry summers. Spring and autumn are pleasant with moderate temperatures and occasional showers.
Compared to other parts of Portugal, Porto is cooler and wetter, especially than the south. It’s also milder and less rainy than nearby northern Spain.
See the UV index hour by hour for Porto, along with the temperature and how cloudy it is. If the UV level is higher than moderate, it's best to avoid direct sunlight.