If you are planning a private trip to Portugal in May, here is what you can realistically expect. Daytime temperatures average 23°C (73°F) in Lisbon and 24°C (75°F) in the Algarve. Sunshine averages 9.5 hours per day, daylight stretches to about 14.0 hours, and the country generally feels balanced. The sweet spot. Warm enough for swimming in the south, cool enough to walk all day.
FAQ
What festivals happen in Portugal in May?
Fátima Pilgrimage; Festa das Cruzes (Barcelos); Queima das Fitas (Coimbra student festival). Many smaller villages also run their own local festas worth catching with a local driver.
Are restaurants and wineries open in May?
Yes. Most premium restaurants and signature wineries operate year-round, though some Algarve beach clubs run seasonal hours. A concierge or private driver can confirm specific opening days for the precise dates you have in mind.
Do I need a car or a driver in May?
Public transport works well inside Lisbon and Porto, but Portugal's most memorable moments are spread across the countryside. A private driver lets you visit a Douro quinta, an Alentejo wine estate or a hidden Algarve cove without losing half a day to logistics.