The best time to visit Barcelona is from May to June, when balmy temperatures in the low to mid-70s mesh with a flurry of festivals that trumpet the advent of summer. The actual summertime is sticky with humidity – locals leave their beloved city in droves to catch a breeze somewhere else.
What is low season in Barcelona?
The winter months of January, February, and March are low season in Barcelona. But this is still a great time to visit; you won't need to book ahead to get into museums, and there are plenty of cozy tapas bars for lunch on a cooler day.