This is the 12634th most frequent Swedish word.
sommarmånader
"Summer months."
Here, 'sommarmånaderna' is a definite compound noun referring to specific months known as summer months.
Sommarmånaderna i Sverige är juni, juli och augusti.
The summer months in Sweden are June, July, and August.
In this sentence, 'sommarmånaderna' is used to indicate a time period characterized by summer activities.
Under sommarmånaderna brukar vi åka till stranden och simma.
During the summer months, we usually go to the beach and swim.
Here, 'sommarmånader' is a general plural noun meaning months associated with summer, without definite specification.