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Lake Sammamish State Park state park in Issaquah, WA
Photo: Spencer Lau
View of Lake Sammamish State Park in Issaquah, WA
Photo: vandana salaria
View of Lake Sammamish State Park in Issaquah, WA
Photo: Tiffani Williams

Lake Sammamish State Park

4.7(5,195 reviews)FreePark
🕑 4-6 hours for a full beach day; 2-3 hours for playground and picnic visits👶 Best for all ages, from toddlers to teens. Babies and toddlers love splashing in the shallow swimming areas and sandbox play, while school-age kids enjoy the playgrounds and lawn games. Older kids and teens can paddleboard, kayak, or play beach volleyball.

About

Lake Sammamish State Park is a Pacific Northwest gem offering 512 acres of family fun along the lake's sunny east shore. With two swimming beaches, excellent playgrounds, sprawling picnic areas, and calm waters perfect for young swimmers, it's an ideal spot for families seeking outdoor adventures with breathtaking Cascade Mountain views as your backdrop.

Highlights

  • Two designated swimming beaches with lifeguards on duty during summer
  • Multiple modern playgrounds with climbing structures and swings
  • Boat launch and rentals available for kayaking and paddleboarding
  • Expansive grassy areas perfect for frisbee, soccer, and kite flying
  • Scenic walking trails connecting the two beach areas

Pro Tips

  1. 1.Arrive before 10 AM on summer weekends to snag parking and a prime picnic shelter spot,the lot fills up quickly on hot days
  2. 2.Bring water shoes for the kids as the beach has some rocky areas, plus shade equipment since tree cover near the beach is limited
  3. 3.The Sunset Beach area (north side) tends to be less crowded than the main beach and has a newer playground
  4. 4.Pack a wagon or cart to haul your gear from the parking lot to the beach,it's a bit of a walk with little ones
  5. 5.Download your Discover Pass ahead of time or purchase at the entrance; it's required for parking and helps avoid delays

Best Time to Visit

Weekday mornings from late June through August offer the best weather with smaller crowds. Aim for 9-11 AM before peak heat and congestion. Spring and fall are lovely for hiking and picnicking without the summer beach crowds, though swimming will be chilly.

What to Know

Requires a Washington State Discover Pass ($10 daily or $30 annual) for parking. Restrooms, changing facilities, and outdoor showers are available. Limited food concessions operate in summer, so bring your own snacks and meals for the best experience.

Seasonal Notes

Peak season is June through September when swimming is most comfortable and lifeguards are on duty. The park remains open year-round with reduced hours in winter, perfect for off-season walks and wildlife watching. Some facilities may close during winter months.

Nearby Eats

Head to downtown Issaquah (10 minutes away) for family favorites like XXX Root Beer Drive-In for burgers and floats, or Jak's Grill for a nicer sit-down meal with a kids' menu that appeals to picky eaters.

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