Yeah we are in our dry season right now so you should be fine with the showercap and a lighter rain jacket. The showerspass might be overkill but depending on how long you will be here it can start raining in a heartbeat. Have fun and if all else fails sit in a Stabucks and people watch at Pike Place market, its definitely a good place for that.
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(Life is too short to play crappy guitars) 2006 Raleigh Cadent 3.0, 1977 Schwinn Volare, 2010 Windsor tourist. ( I didn't fall , I attacked the floor)