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About Seaside Lagoon in Redondo Beach, California

Seaside Lagoon is a man-made salt water lagoon surrounded by sand in an urban park next to the Redondo Beach Harbor. This facility has been designed with kids and families in mind. Sea water is used to cool the nearby steam generating plant, then is chlorinated and drained into and out of the lagoon (after being de-chlorinated). There are lifeguards on hand to make this a safe swimming spot and wading area for small children. The facility has a sandy beach, grass areas, a snack bar, and playground toys in various locations. Next door is a Ruby’s Diner Restaurant which also provides the snack bar at Seaside Lagoon.

Note that Seaside Lagoon is closed after Labor Day and doesn’t open back up until late May every year. Check their website for specific dates and special events held there. When it’s closed, just head over to Redondo County Beach where plenty of sand and salt water can be found. The parking lot for Seaside Lagoon is at the corner of North Harbor Drive and Portofino Way in Redondo Beach, CA.

200 Portofino Way
Redondo Beach, CA 90277
Park Name
Seaside Lagoon Park
City Park
Pet Details
No dogs allowed at this facility
Fee for entrance
Swimming, Picnicking, Volleyball
Lifeguard, Swimming Area, Water Slides, Restrooms, Showers, BBQs, Volleyball Court, Picnic Tables, Kids Play Area, Snack Bar, Restaurant
Water Temps
Map of Seaside Lagoon
Redondo Beach, US
8:08 pm, May 19, 2024
temperature icon 59°F
L: 57° H: 61°
Feels like 59.02 °F scattered clouds
Wind gusts: 4 m/s
UV Index: 0
Precipitation: 0 inch
Visibility: 10 km
Sunrise: 5:49 am
Sunset: 7:50 pm
Humidity 86 %
Pressure1014 mb
Wind 4 m/s

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