• If you drive out the POL/Falcon gate, take a left at the second stoplight (Lawsons)
• If you exit the main gate, take the first left.
• Follow this road until it T's at Hwy 338.
• Turn left (north) on Hwy 338.
• Look for a large rest stop / parking area on the right. Turn right directly after the parking area.

The Veedol Beach is the only authorized swimming beach in Misawa. The beach opens from 9:30 a.m. to 4 p.m., from mid-July to August 31st. The Misawa Port Festival is held at the nearby Misawa Fishery Port in late-August and the fireworks display follows the port festival at night.

Cost: Coin shower 100 Yen-five minutes

source: http://www.net.pref.aomori.jp/misawa/english/pub-facilities.htm