The weather, as usual, is considered one of the most unpredictable parts of the tour. From my own experience I can say that in the middle of September in Lisbon there is still a hot summer and the air temperature keeps at around 30 degrees. In addition, the indicator is that children in Portugal begin to go to school in October, so September is a completely summer vacation month.

A detailed forecast for the coming days at popular resorts can be found on the page "Weather in Portugal."