what is the weather like in Portugal in May
Check the Weather in Lisbon, Portugal in May before you book your next holiday. This gives the best indication of the weather in May and includes figures for temperature, sunshine and rainfall. 1  22Â°C max day temperature.heck the Weather in Lisbon, Portugal in May before you book your next holiday. This gives the best indication of the weather in May and includes figures for temperature, sunshine and rainfall. 1  22Â°C max day temperature.