A Summer Tradition That Never Gets Old

For many South Bay families, spending a day at Seaside Lagoon in Redondo Beach is a summer staple. The beloved saltwater oasis has been making summer memories for generations. Open seasonally from Memorial Day through Labor Day, Seaside Lagoon remains one of the most unique places to cool off in Los Angeles.

Tucked inside King Harbor, Seaside Lagoon offers all the fun of a beach day, without the rough surf, unpredictable waves, or constant “stay where I can see you!” reminders.

A Beach Day Without the Stress

Unlike the open ocean, Seaside Lagoon features calm, heated saltwater in a protected swimming area that’s perfect for families with younger kids. Lifeguards are stationed throughout the facility, creating an environment that feels safe and relaxed without sacrificing any fun.

The lagoon includes:

• Sandy beaches for building castles
• Shallow areas for little swimmers
• Deeper water sections for stronger swimmers
• Water slides for kids looking for extra excitement
• Picnic areas and barbecue spaces
• Beach volleyball courts
• A playground and grassy areas for breaks between swims

It’s basically a beach, pool, and playground rolled into one.

The Water Is Saltwater, Just Warmer!

One of Seaside Lagoon’s coolest features is something many first-time visitors don’t realize: it’s the West Coast’s only heated seawater lagoon. Water is drawn from the harbor and maintained at temperatures noticeably warmer than the Pacific Ocean, making those first steps into the water much less shocking.

And because it’s enclosed, parents can relax a little more while kids splash around without battling waves or rip currents.

Make a Day of It

Part of the charm of Seaside Lagoon is that it encourages slow summer days.

Families can bring beach chairs, towels, floaties, snacks, lunch, and beach toys!

Glass containers and alcohol are prohibited, but otherwise, the atmosphere is very relaxed. Picnic tables and barbecue areas can even be reserved for birthdays and family gatherings.

The Perfect Alternative to Crowded Beach Days

As beautiful as South Bay beaches are, they can get crowded fast in the summer. That’s what makes Seaside Lagoon such a hidden advantage.

Instead of battling waves, carrying gear across hot sand, and constantly watching for currents, you get calm water, shaded picnic spaces, and plenty of room for everyone to spread out.

It’s easy to understand why so many local parents quietly consider it one of the best-kept secrets in the South Bay.

Steps Away From King Harbor

Another reason Seaside Lagoon works so well? The location. After swimming, you’re just steps from:

• King Harbor Marina
• The Redondo Beach Pier
• Seafood restaurants
• Bike paths
• Waterfront walks
• Ice cream stops and snack breaks

It turns a simple swim day into a full Redondo Beach adventure.

Why Seaside Lagoon Is Still a South Bay Favorite

In an era of expensive water parks and packed beaches, Seaside Lagoon keeps things wonderfully simple. It offers warm saltwater swimming, family-friendly fun, and beautiful harbor views.

Open daily from 10:00 am to 5:45 pm!

Daily admission:
• Adults (18+): $10
• Children (ages 2–17): $8
• Children under 2: Free

Season passes:
• Individual: $90
• Family of 4: $190
• Each additional family member: $35