Lisbon is very warm in the Summer and the Winter is generally mild. Due to the Gulf Stream, Lisbon has probably the warmest winter in all of Europe. The hottest month of the year is July where temperatures can reach up to 34ºC (93ºF), the coldest in January with minimum temperatures reaching 8ºC (46ºF). Expect abundant rain in November and December.
Spring
March to June
Lisbon is always a beautiful city to visit, but in Spring it has a certain magic. Beware that it might still rain from time to time, but as we say goodbye to the winter, the weather is becoming warmer everyday, a perfect season to explore all the green sights and cafés terraces.
April is a special month for a lot of Portuguese people. In the beginning of the month Easter might fill some churches around the city for celebrations and on the 25th of April the Carnation Day is noted. On this day in 1974 the facist regime was overthrown and this day has been celebrated since then.
The first of May (labour day) is celebrated publicly with demonstrations from various workers unions, but don’t worry, these are generally very calm. Outside Lisbon, on the 13th in Fátima, the apparitions are celebrated.
June is a hot month in Lisbon and we are not speaking only about the weather. Two and sometimes three public holidays mark this month. On June 10th, Portugal day is celebrated, but the biggest celebration is saved for June 13th. Santo António the patron saint of Lisbon blesses the city with a week long party on the streets, the santos is something you will not want to miss!
If you’re planning to enjoy the beaches around Lisbon, this is the season to book then. The warmest weather of the year occurs in July, but beach season in Lisbon goes from June to September. There are great beaches around Lisbon, but beware of the cold water!
On August 15th the Assumption of Mary is celebrated as a public holiday, but don’t expect any celebrations.
Summer
June to September
Autumn
September to December
On October 5th and November 1st the Implantation of the Republic and All Saints day are celebrated.
The city is fantastic whatever the season! Winter’s advantages are the most affordable rates and fewer tourists transiting to and from.
There are three public holidays in Lisbon in December, on December 1st and the 8th. And of course Christmas on the 25th of December.
If you are travelling in December be aware that on Christmas and New years day, a lot of things like restaurants, cafés, bars, shopping malls will be closed…. But new year parties are excellent!