Yes, you can generally have a tent on the beach in California for day use, but the rules are very strict about "enclosed" structures and overnight stays. Most beaches in 2026 allow small "pop-up" sun tents or "half-dome" shelters that are used for shade and wind protection, provided they don't have four closed walls (which can be seen as an attempt to camp). However, overnight camping is prohibited on nearly all public California beaches unless you are in a designated, paid campsite (like those at El Capitán or San Elijo). Additionally, many Southern California beaches (like Santa Monica or Huntington) have local ordinances banning large canopies or tents that exceed a certain size (e.g., 10'x10') to ensure lifeguards have a clear line of sight to the water. Some beaches also ban "staking" tents into the sand if there are protected bird nesting sites nearby. Always check the signage at the entrance of the beach; while a small sun-shade for your toddler is usually fine, setting up a full-sized camping tent will likely earn you a visit from a park ranger and a fine.