Sequim Bay is a scenic saltwater bay on Washington's Olympic Peninsula, approximately 4 miles long and between 0.75 to 2 miles wide. The bay is protected from the wind waves and swells of the Strait of Juan de Fuca by Travis Spit, creating generally calm conditions suitable for beginners, though complex currents exist for more advanced paddlers. A full circumnavigation of the bay is roughly 10 to 12 miles. The primary public launch points are John Wayne Marina and Sequim Bay State Park. At John Wayne Marina, paddlers can use the boat ramp for a fee or launch for free from the adjacent park beach, which features a moderately steep ramp and a rocky, barnacle-covered shoreline that requires water shoes, especially at low tide when the water recedes significantly. Sequim Bay State Park offers a free launch for kayaks and SUPs, though a Discover Pass is required for vehicle parking. The park's moorage dock is permanently closed, but the boat launch dock is open with a 15-minute time limit for loading and unloading.

Paddlers must be aware of strong tidal currents, particularly noted near Protection Island outside the bay, which necessitate careful trip timing. Water temperatures in the adjacent Strait of Juan de Fuca range from 44 to 57 degrees Fahrenheit, making appropriate immersion gear like dry suits essential. The bay is home to harbor seals, otters, and occasional grey whales, and its kelp beds and dramatic cliffs offer scenic exploration. Protection Island, a natural wildlife refuge visible from the bay, is strictly off-limits for landing, and paddlers must stay 200 yards away. Boat traffic is present, especially near the marina and channel. The area is in the Olympic rain shadow, offering a drier microclimate favorable for year-round paddling, though spring through fall are the most popular seasons. Facilities at the main access points include parking, restrooms, and nearby campgrounds.