Campgrounds and RV parks in Washington, US

Activities split by region. On the Olympic Peninsula and outer coast, RV travelers based near Kalaloch Campground walk Pacific beaches, watch tide pools at low tide, and drive inland to the Hoh Rainforest and Hurricane Ridge. Whidbey Island trips out of Deception Pass State Park focus on shoreline hikes, the bridge viewpoints, and saltwater paddling. In the Cascades, Lake Wenatchee State Park gives quick access to alpine trails, river floats, and the Bavarian-themed town of Leavenworth. Winthrop KOA puts RVers within reach of the Methow Valley's bike trails, the western entry to North Cascades National Park, and the seasonal Highway 20 scenic drive. East of the mountains, Lake Chelan State Park is built around swimming, boating, water skiing, and fishing on the lake's southern shore, with Chelan town nearby for restaurants and tasting rooms. Wine touring, orchard stops, and dam tours along the Columbia River round out east-side itineraries.

Prime RV season runs from late June through early September, when mountain passes are reliably clear of snow and weather is most stable. July and August deliver the warmest, driest conditions and the longest daylight, but also the heaviest crowds and the tightest reservation windows at popular parks. Spring brings snowmelt waterfalls, blooming rhododendrons, and lighter crowds, though higher Cascade roads stay closed into late May or early June. The North Cascades Highway typically opens late May to early June. Coastal and lowland state parks are accessible earlier, with rain still likely. September often rivals summer for camping conditions, with warm days, cool nights, and crowds thinning sharply after the Labor Day holiday. Fall colors arrive in the Cascades through October, and many mountain campgrounds begin closing by late October. Winter shifts the map. Mountain campgrounds close due to snow, while coastal and lowland parks remain open with reduced facilities. Western Washington stays mild and wet through the cold months, and storm watching on the outer coast is a draw.

Site sizes vary widely by region. Modern coastal and lowland state parks typically accommodate larger rigs, while North Cascades and Olympic Peninsula campgrounds often cap RV length at roughly 21 feet, with a smaller number of pull-throughs fitting up to 35 feet. Confirm length and slide-out clearance before booking. Kalaloch Campground, for example, has no hookups but offers a dump station, potable water, flush toilets, and food lockers. Hookup availability also varies. Many state park sites offer water and electric but not sewer, with central dump stations on site. Full hookups are more common at private parks such as Winthrop KOA. Cell service is unreliable in the Olympics, North Cascades, and outer-coast areas. Check-in at state parks is 2:30 p.m. and checkout is 1 p.m. Quiet hours run 10 p.m. to 6:30 a.m., and generators may only run between 8 a.m. and 9 p.m. Pets must be leashed and are barred from designated swim beaches.