Twin Harbors State Park - United States

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About Twin Harbors State Park

RV quick facts for Twin Harbors State Park

DetailInformation
Max RV lengthUp to 35 ft in utility loops; check site-specific length when booking
Full hookupsNo full hookups; utility sites offer water and electric only
Dump stationOn-site RV dump station available seasonally
Cell serviceGenerally usable on major carriers near Westport, weaker in wooded loops
Reservation windowReservations through Washington State Parks up to nine months in advance
Road restrictionsAccess via SR-105, a paved two-lane coastal highway with no tunnels or steep grades
Discover PassDay-use vehicles require a Washington State Parks Discover Pass; included with overnight camping fees

Best time to visit Twin Harbors State Park

Late June through early September offers the warmest, driest weather on the Washington coast, with daytime highs in the mid 60s to low 70s Fahrenheit and the lowest rainfall of the year. Spring and fall shoulder seasons bring cooler temperatures, fewer crowds, and excellent storm watching, but RVers should plan for wind and frequent rain. Razor clam digs in fall, winter, and spring are major draws and book quickly, so reserve well ahead. Winter camping is possible since the park stays open year-round, but expect wet, windy conditions and short daylight hours.

Jan 280 mm
46°F - 37°F

Wet and windy; storm watching season

Feb 220 mm
48°F - 37°F

Cool and rainy; razor clam digs draw visitors

Mar 200 mm
52°F - 39°F

Frequent showers; pack rain gear

Apr 130 mm
55°F - 41°F

Spring shoulder season, fewer crowds

May 90 mm
59°F - 46°F

Drier weather begins

Jun 60 mm
64°F - 50°F

Coastal fog common in mornings

Jul 30 mm
68°F - 54°F

Peak season; reserve well in advance

Aug 35 mm
70°F - 54°F

Warmest, driest month; busy weekends

Sep 80 mm
66°F - 52°F

Pleasant fall shoulder season

Oct 200 mm
59°F - 46°F

Rain returns; fall clam digs begin

Nov 320 mm
52°F - 41°F

Wet and stormy

Dec 320 mm
46°F - 37°F

Coldest, wettest month; park open

Things to do at Twin Harbors State Park

  • Pacific Ocean Beach Access Easy
    RV parking available

    A short walking trail leads from the campground through coastal dunes to a wide, sandy ocean beach. The flat, hard-packed sand is ideal for long walks, kite flying, and beachcombing for shells, agates, and driftwood.

  • Razor Clam Digging

    Twin Harbors is one of the most popular razor clam digging beaches in Washington. Digs are scheduled by the Washington Department of Fish and Wildlife during approved tides in fall, winter, and spring, and require a current shellfish license.

  • Shifting Sands Nature Trail Easy
    RV parking available

    A short interpretive loop trail winds through coastal shore pine and salal between the campground and the beach. The trail is mostly flat with soft footing and good for stretching legs after a drive.

  • Surf Fishing

    The surf line at Twin Harbors offers seasonal fishing for surfperch and other coastal species. Anglers should check current Washington Department of Fish and Wildlife regulations and seasons before casting.

  • Westhaven State Park Day Trip Easy
    RV parking available

    Westhaven State Park, a few miles north near Westport, provides protected jetty views, a paved promenade, and surfing access. RVers can day-park in the large lot and watch boats entering Grays Harbor.

  • Westport Light State Park and Lighthouse Easy
    RV parking available

    The Grays Harbor Lighthouse, the tallest in Washington, sits adjacent to Westport Light State Park just north of Twin Harbors. A paved 1.3-mile multi-use trail connects the lighthouse area to Westhaven through dune habitat.

  • Wildlife and Whale Watching

    The Westport area is a launching point for spring and fall gray whale watching tours from the marina. Shorebirds, harbor seals, and bald eagles are commonly spotted from the beach year-round.

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RV Rentals Twin Harbors State Park

Twin Harbors State Park, WA, United States

How to get to Twin Harbors State Park

From Olympia, the park is roughly 75 miles, about a 1.5-hour drive west via US-101 and SR-8 to Aberdeen, then SR-105 south through Westport. From Seattle, plan on about 2.5 to 3 hours depending on traffic. The route is RV-friendly with no tunnels or steep mountain passes, but SR-105 is a two-lane coastal highway with limited passing zones and gusty crosswinds near the shore. The closest major airport for fly-and-rent travelers is Seattle-Tacoma International Airport (SEA), about 130 miles northeast of the park.

RVezy vs. Traditional RV rental

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  • Pickup only at retail locations
  • Fewer RV types and less availability