Summer to me means heat and when you are hot everyone gravitates to the water.
In Australia we are still lucky enough to find beaches that have few people on them
and places to sunbake on the rocks (not a good idea these days)
Some prefer boating, others surfing
some like the shade an umbrella gives them when they drag themselves from the cooling water.
When a beach is not available there is always a pool somewhere handy.
Even harbour pools are fun. Possibly more so because the little ones can play in the sand. Yes summer is a time of beach and sun lotion. Being presently in winter I look forward to its return.
In response to Sunday Stills where the prompt was summer.