General Information Plan Your Trip When planning a trip to Lisbon, it's normal to have questions about the necessary documentation, the official currency, opening hours, and more. Here we will try to answer some of the most common questions. Language A list of useful words and phrases in Portuguese that will come in handy once you are in Lisbon and the rest of Portugal. Read more Climate Lisbon is one of the warmest capital cities in Europe thanks to the Atlantic Ocean. Winters are generally mild and showery and summers are pleasant and warm. Read more Public Holidays Discover when Portugal and Lisbon celebrate their public holidays. It’s always a good idea to read about the country’s festivities before traveling. Read more You may also be interested in General Information Lisbon is the capital and the most influential city in Portugal. It lies on the Atlantic Ocean and River Tagus. Its privileged location made it an important city, controlling as it does a great part of the Atlantic. Language In Lisbon the official language is Portuguese, of which there are 265 million speakers worldwide. The most common variant is in fact Brazillian Portuguese, with a little over 200 million speakers.