Before you can begin exploring Lisbon, it’s useful to know what the weather is going to be like on the trip, and therefore what to pack. Fortunately, the weather here is fairly constant all year-round. With highs of 82F in summer, it’s a hot city that warrants light clothing, with plenty of t-shirts, shorts and dresses.
Fortunately, even during the winter months of December and January, only 10 days of rainfall are expected per month. This means that, fingers crossed, you can book outdoor activities which won’t be ruined by rainfall.