Cannon Beach. This place is really, really cool, folks. Lots of kite fliers, picnicking and people swimming. Yes, you heard me. Turns out you CAN swim in Oregon coastal waters. We saw plenty of people splashing around in water at least up to their necks. So it can be done. Locals, however, strongly urge swimmers to be careful as ocean waters can be unpredictable and dangerous. One minute you’re splashing around having a ball; the next, you’re caught in a deadly undertow. Swimming months are late July through August when the water is warmer.