01
Best overall pick
Brannan Island State Recreation Area
Near Isleton • Classic Delta Swim Beach • Best All-Around Day Trip
A broad, sandy river beach with easy access, picnic spots, and that laid-back Delta vibe locals love.
Just across the water from Bethel Island, Brannan Island delivers the most complete “day at the beach” experience without heading to the coast. The swim beach on Seven Mile Slough has gentle water, nearby parking, and plenty of shoreline for chairs and coolers. Go earlier on hot weekends, when Delta boaters and picnic crews arrive in full force.
02
Relaxed river classic
Sandy Beach County Park
Rio Vista Riverfront • Low-Key River Sandbar • Best For Simple Swims And Sun
A straightforward sandy stretch on the Sacramento River where you can swim, wade, and watch boats slide by.
Sandy Beach is exactly what the name promises: a broad arc of sand with direct access to the Sacramento River. It’s a favorite for locals who want a quick dip, a towel in the sand, and not much fuss. Expect a mellow scene on weekdays and more of a social, picnic-heavy crowd when the temperatures spike.
03
Wind lover’s pick
Sherman Island County Park
Delta Confluence • Windy Watersports Shore • Best For Kite And Wind Sports
A rugged shoreline at the meeting of the rivers, famous for its strong afternoon winds and active watersports scene.
Sherman Island is less about lounging with a paperback and more about being out in the elements. Steady winds and open water make this stretch a magnet for kiteboarders, windsurfers, and paddlers who don’t mind a bit of chop. Bring layers, a solid beach chair, and a camera—watching the kites dance against the Delta sky is half the fun.
04
Family swim favorite
Contra Loma Regional Park Swim Lagoon
Antioch Hills • Guarded Reservoir Beach • Best For Families With Kids
An inland swim lagoon with a sandy beach, lifeguards in season, and an organized setup that’s easy with kids in tow.
When you want clear swim zones and predictable conditions, Contra Loma’s lagoon is an easy choice. The designated swimming area, gentle entry, and nearby facilities make it an especially good fit for younger kids or mixed-ability swimmers. Pair a few hours on the sand with a short walk or picnic in the surrounding park to round out the day.
05
Bayfront day trip
Crown Memorial State Beach
Alameda Shoreline • Wide Urban Bay Beach • Best For Long Walks And Views
A sweeping Bay shoreline with shallow water, steady breezes, and big-sky views of the San Francisco skyline.
If you’re up for a longer drive from Bethel Island, Crown Beach rewards you with a true bayside experience. The gently sloping sand and typically calm, shallow water make it comfortable for wading and beach games, while the paved path behind the sand is perfect for long walks or bike rides. Stay for golden-hour light over the Bay and the city skyline to end the day on a high note.