01
Best overall pick
Gull Park Beach
Eastern Foster City Waterfront • Family-Friendly Bay Beach • Best For Young Kids
A sheltered slice of bayfront sand with playgrounds and lawns that makes beach time easy for families.
Gull Park pairs a small sandy beach with two playground areas and a big grassy lawn, so kids can bounce between the water and the swings without ever leaving sight. The bay here is usually calm, making it more about splashing at the edge than real swimming, but that’s exactly what many families want. Arrive early on weekends if you want a picnic table with a clear view of the water.
02
Quietest near-home escape
Erckenbrack Park Beach
Northeast Foster City Lagoon • Low-Key Neighborhood Beach • Quiet Local Favorite
A tucked-away lagoon shoreline that feels more like a neighborhood pocket beach than a big destination.
Erckenbrack Park’s narrow strip of sand fronts the calm lagoon, with just enough space to spread out a towel and let kids dig or wade. It’s less busy than the bigger parks, so it works well for a quick reset by the water or a leisurely stroll along the path. Pack your own shade and snacks; the appeal here is the peaceful setting, not extra amenities.
03
Most active waterfront scene
Leo J. Ryan Park Lagoon Beach
Central Foster City Lagoon • Lively Community Waterfront • Go-To Spot For Watersports
A central lagoon park where sandy edges, rentals, and events bring a steady buzz of activity to the shoreline.
Leo J. Ryan Park is the heart of Foster City’s waterfront, with paths circling the lagoon and small sandy areas that feel like an urban beach. On breezy days you’ll see kayaks, paddleboards, and small sailboats out on the water, giving the shoreline a distinctly active vibe. It’s a great choice if you want a walkable setting with plenty of people-watching rather than a quiet, tucked-away cove.
04
Best Peninsula bay beach day
Coyote Point Recreation Area Beach
San Mateo Waterfront North Of Foster City • Windy Bayfront Park Beach • Best For Picnics And Planespotting
A broad shoreline with lawns, trails, and steady bay breezes, ideal for full-day picnics and watching planes and windsurfers.
Just a short drive up 101, Coyote Point offers a larger, more open bay beach experience than anything in Foster City itself. Families spread out under trees and on the lawns, then wander down to the sandy edge to wade, skip rocks, or watch the windsurfers. Expect it to be breezy and bring layers, but the trade-off is big views over the Bay and near-front-row seats to planes on approach to SFO.
05
Worth-the-drive ocean classic
Half Moon Bay State Beach
Half Moon Bay Coast West Of Foster City • Classic Pacific Ocean State Beach • Great For Long Walks And Sunsets
A sweeping stretch of open-ocean sand that delivers the full Northern California beach experience in under an hour’s drive.
When you want real surf and wide-open vistas, Half Moon Bay State Beach is the go-to ocean escape from Foster City. The long, flat shoreline is perfect for walking, beachcombing, and lingering through golden-hour light, even when the water is too chilly for more than a quick dip. Parking fills on sunny weekends, so go early or aim for a late-afternoon visit to slide into sunset.