You are going to have to head out to the suburbs of Pedregalejo and El Palo to hit the beach, but fortunately, it's a short ride. From the center, take a stroll (or bus #11) down Paseo del Parque and you'll find yourself at the beginning of the seafront paseo - or promenade. At first, you can walk street-level on a beautiful raised promenade, or head down to walk on the sand, if that's your thing. Further on into Pedregalejo, street and beach level meet, and small seafood restaurants, cafes and a few bars pop up.
I was there in May when the weather was nice (around 70F or 19 C), but the water was not warm enough for swimming….well, once maybe…just to say I did it!