UV Index
UV Index
Today's UV index in Porto, Portugal 
will be up to 8.4, 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: 2025-06-21
With a UV index of 8.4 in Porto, 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.
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.