The following graph displays the average weather conditions of Lisbon. In the height of summer Lisbon can get really hot, which may be too hot for some tourists who want to explore the city. During the winter months the weather can be very unpredictable with pleasant sunny days and an equal amount of gray, wet days.

The best weather in Lisbon is spring or early autumn, when there is plenty of sun but without the obsessive humid nights of summer. Lisbon is close to the Atlantic so there is very little variation with sea temperature; it is cold all year round!