Before we moved to our new place we usually went to Amager Strand at the end closest to the city. As we are now within walking distance of the opposite end of Amager Strand close to Femøren Station. We’ve been up there every warm weekend so far – flying kites, paddling and eating ice creams.
The swimming bath, Kastrup Søbad, is a wonderful addition to this end of the beach, although we’ve not been brave enough to take the plunge. The sea temperatures of 10 degrees c are not appealing at the moment, although that doesn’t stop the fearless Vikings. The other plus points of this end of the beach are that the beach is very shallow, perfect for families and it doesn’t get that busy (so far). I don’t want to encourage too many crowds but it is definitely worth travelling a few more stops down the Metro!
Dejlige Days 
I envy being that close to so much water! There really isn’t much in Denver. I asked some co-workers where to go swimming in lakes or rivers recently, and they suggested some reservoirs. I think I’ll have to go far out toward the mountains to find a nice creek to swim in.