🌤 Weather at Belfair State Park by season
| Spring | Summer | Fall | Winter |
|---|---|---|---|
| 38–66 °F | 51–77 °F | 39–72 °F | 35–49 °F |
Each range runs from the coldest monthly average low to the warmest monthly average high in that season (1991-2020 climate normals), measured at Bremerton, 13 mi away, elevation 110 ft. Conditions at the park can differ from the station, especially where elevation differs — check a forecast before you go.
Hood Canal’s Saltwater Tidelands — Unique Warm-Water Swimming Pool Fed by Creek, 184 Campsites, 3 Yurts, Shellfish Harvesting, Olympic Peninsula Gateway, Mason County WA
Belfair State Park is a state park at 3151 NE State Route 300, Belfair, Mason County, Washington, on the shores of Hood Canal. The park features 3,720 feet of saltwater shoreline on Hood Canal’s Lynch Cove, a unique warm-water swimming area where Big Mission Creek flows into the tidelands, 184 campsites with hookups, 3 yurts, over 3 miles of hiking trails, saltwater tidelands for shellfish harvesting, and proximity to Olympic Peninsula attractions.
Belfair is Hood Canal’s family beach — where Big Mission Creek meets the saltwater tidelands, the water warms naturally in shallow pools, creating a unique “natural swimming pool” effect perfect for children. The 3,720 feet of saltwater shoreline provide shellfish harvesting when tides are right.
As a gateway to the Olympic Peninsula, Belfair is perfectly positioned for day trips to Olympic National Park, the Theler Wetlands, and Hood Canal’s legendary oyster bars.
Things to Do
- Warm-water swimming — creek/tideland natural pool
- Shellfish harvesting — Hood Canal tidelands
- Camping — 184 sites + 3 yurts
- Hiking — 3+ mi trails through forest
- Beachcombing — 3,720 ft saltwater shoreline
- Wildlife viewing — birds, marine life
- Olympic Peninsula — day trip gateway
Park Information
| Feature | Details |
|---|---|
| Location | 3151 NE SR 300, Belfair, WA 98528 |
| Shoreline | 3,720 ft — Hood Canal saltwater |
| Sites | 184 campsites + 3 yurts |
| Swimming | Warm creek/tideland natural area |
| Managed By | Washington State Parks |
| Coordinates | 47.4328° N, 122.8750° W |
Nearby Attractions
Theler Wetlands — 3 miles south in Belfair — offers 4 miles of boardwalk through freshwater and saltwater wetlands. Twanoh State Park is 8 miles northwest on Hood Canal. Olympic National Park access is 45 miles west. Bremerton — 25 miles north — has the Puget Sound Navy Museum and Kitsap Transit ferry to Seattle.
Can you swim at Belfair State Park?
Yes — Belfair State Park in Mason County, Washington, has a unique warm-water swimming area where Big Mission Creek meets the Hood Canal tidelands, creating naturally heated shallow pools. The park features 3,720 feet of saltwater shoreline, 184 campsites, 3 yurts, hiking trails, and shellfish harvesting on the Hood Canal tidelands. Located on the Olympic Peninsula near Belfair.
Last updated: May 2026
Nearby state parks: If you have extra time, Square Lake is a short drive away, and Twanoh State Park is a short drive away.
Camping reservations: Book campsites and cabins for Washington state parks online at washington.goingtocamp.com.
🐾 Dogs & Pets at Belfair State Park
- Pets allowed? statewide rule
- Pets are allowed in most Washington state parks but must be under physical control on a leash at all times.
- Leash rule statewide rule
- 8 ft maximum leash required; pets must be under physical control
- Beaches & swim areas statewide rule
- Pets are not permitted on designated swim beaches
- Cabins & lodging statewide rule
- Pets are not allowed inside vacation houses but are permitted in designated pet-friendly cabins and yurts (e.g. Grayland Beach, Seaquest, Ike Kinswa — Cape Disappointment does NOT allow pets in its yurts), typically up to two pets, with a pet fee
- Pet fees statewide rule
- No day-use pet fee; $15 per night pet fee in pet-friendly cabins/yurts
- Statewide exceptions statewide rule
- Director-designated off-leash areas are exempt from the leash rule and are conspicuously posted
Are dogs allowed at Belfair State Park?
Pets are allowed in most Washington state parks but must be under physical control on a leash at all times. Individual parks can post stricter rules — check signage on arrival.
Rules verified July 2026 via parks.wa.gov. More: Washington state parks guide · Dog rules in all 50 states compared
Park Location
Plan your gear for Belfair State Park
From our editorial guides, matched to this park’s activities:
