4/3 wetsuit late spring, shorty to board shorts in late June through July and August. Water temp 50°F late spring to upper 60's°F in August (tide will effect this more than in Gorge). Air temps 50's to 70°F in spring and 70's to 90's°F in summer.
Tacoma Airport. Located in Sequim on the NE corner of the Olympic Penninsula on the Straits of Juan de Fuca. From Seattle you will either take the Edmonds-Kingston Ferry or drive to Tacoma and then North.