There are many events, including art gallery openings, poetry readings, theater, live music, hikes, and nature walks all summer. A good place to find out what's going on is www.discoverwellfleet.com maintained by the Wellfleet Chamber of Commerce. Also see: www.wellfleetian.com for a daily calendar covering the Outer Cape.
Note: Due to the influx of Grey Seals and Harbor Seals all the Atlantic Ocean beaches have had sightings of Great White Sharks from time to time. So swimmers and surfers are put on notice to be watchful and obey lifeguards and signs.