When we think of Barcelona we think of summer, sun and people swimming in the sea. This picture is almost true, because in July and August the average temperature in Barcelona is more than 25 Celsius. During wintertime it is normally quite nice temperatures as well, and in the coldest month, January, the average temperature is around 6-7 Celsius. We can of course not guarantee you nice weather, but visiting Barcelona there is a great chance that you will be able to enjoy sunshine, sun lotion and sunglasses!