Portland vs Seattle

Portland

Portland has a cool marine climate — famously rainy, but not in the way visitors expect. The rain is a persistent drizzle, not heavy downpours. Portland actually receives less annual rainfall (about 36 inches) than New York or Houston, but it is spread over 150+ rainy days from October through May. Summers (July through September) are gloriously dry, sunny, and warm. Winter brings occasional snow that typically melts within a day or two.

Seattle

Seattle has a temperate oceanic climate — mild year-round with a pronounced wet season from October through April. Summers are dry, sunny, and cool. The famous rain is usually a fine drizzle ("Seattle mist") rather than downpours. Snow at sea level is rare.

Portland

Portland has the most useful public transit of any city its size on the West Coast. MAX light rail (5 lines) connects the airport, downtown, and key suburbs. The Portland Streetcar loops through downtown, the Pearl, and east side neighborhoods. TriMet buses fill in the gaps. Within individual neighborhoods — Pearl, Hawthorne, Alberta, Mississippi, NW 23rd — walking is the right answer. Portland is also one of the best US cycling cities with protected lanes and a cyclists-first culture.

Walkability: Portland is one of the most walkable large cities in the American West — grid-patterned, flat on the east side, and most interesting neighborhoods (Pearl, NW 23rd, Hawthorne, Division, Alberta, Mississippi, Belmont) have dense commercial strips. Downtown blocks are short (only 200 ft) which makes walking feel quicker. Expect rain 9 months of the year — a good waterproof shell is more useful than an umbrella in the Portland wind.

Seattle

Seattle transit is run by Sound Transit (regional) and King County Metro (buses, streetcar, water taxi). Light rail, buses, streetcars, and Washington State Ferries form a useful network. An ORCA card works across all systems. Driving downtown is painful — traffic is consistently ranked among America's worst.

Walkability: Downtown, Pike Place Market, Pioneer Square, and Seattle Center are all walkable — but prepare for steep hills. Capitol Hill, Ballard, and Fremont are each walkable neighborhoods, but you'll want transit between them. The Link light rail plus walking will cover most of what you want to see.