Beautiful weather, not humid with clear skies is typical for Barcelona in May. The average day temperatures climb to 20°C and the temperature during the nights drops to 12°C. Over the month, the daylight arises to 15 hours with 8 hours of sunshine. Through the month, light rain and thunderstorms are possible to fall of approximately 60mm of rainfalls. Northern and southern sea breeze appears but the speed is not more than 7m/s. The sea temperature arises to 19°C.
Many events take place in Barcelona in May including the Spanish Grand Prix, celebration of Saint Ponc and the celebration of Corpus Christy. It is recommended to take a day off the beach and witness how the world best Formula 1 drivers compete for the prize. One of the advantages of traveling to Barcelona in May is the warm and nice weather, without being unbearable. You can either enjoy the beach or explore the city. You might wait in a line to visit some of the attractions depending what time during the day you will go there.