It is the last day of August. This is commonly seen as the last day of summer in Sweden. By the calendar, summer is June, July, and August.
Of course, many of the days of these months are colder than what you would like from a summer day. This is because Sweden is a country far to the north.
I like the other seasons of Sweden as well, but I often miss those warm summer days more, because they are so few and far between. This summer, there were warm days in June and in August, but not in July. Weather is often funny this way.