What is the best month to go to Portugal?
The best time to visit Portugal is the spring in the months of March through May. It’s at this time in the spring, that the country is in bloom and waking from winter.
The first shoulder season from mid-May through June has weather nearly as good as the early spring and crowds are minimal.
Then in the fall shoulder season between the months of of September and October, the sun is still shining and the weather is warm. As a plus, many of the summer crowds of tourists have dispersed.
Finally, like many places in Europe, July and August are the peak tourist season in Portugal. August, in particular, is very busy due to the fact that it’s Portugal’s holiday month, so Portuguese travelers join the throngs of international tourists.
I would suggest skipping winter (unless you just really like winter weather). Parts of Portugal become dreary and lifeless in the winter.