Weather in Barcelona in November. The average maximum daytime temperature in Barcelona in November is a comfortable 17°C (63°F). There are usually 5 hours of bright sunshine each day, which represents 49% of the 10 hours of daylight. The average sea temperature in and around Barcelona in November is 17°C (63°F). Expect 58mm (2.3 inches) of rainfall across the whole of November with 11 days with some rain falling. Maximum UV levels will be low (2 UV index) at midday when the skies are clear.