When to Go
It's best not to visit at the height of summer, when the city is hot and steamy and lodging is expensive and crowded. Winters are generally mild and usually accompanied by bright blue skies, and there are plenty of bargains to be had at hotels. For optimum Lisbon weather, visit on either side of summer, in May or late September through October. The city's major festivals are in June, when the Santos Populares (popular saints) festivals see days of riotous celebration dedicated to saints Anthony, John, and Peter.