Yes, Lake Gregory allows swimming at its seasonal beach in Crestline, with paid access and posted summer hours.
Some links on this page are affiliate links. If you book through them, we may earn a small commission at no extra cost to you.
Lake Gregory’s shoreline can make the water look accessible from every direction, but a normal swim day belongs at the managed summer beach rather than an unmarked patch of shore. The answer to whether you can swim in Lake Gregory is yes during posted beach operations, after purchasing the required beach access.
Swimming is seasonal, and weather, water conditions, special events, or county instructions can alter the schedule. Check the park’s same-day status before driving into the San Bernardino Mountains, especially early or late in the summer season.
Swimming At Lake Gregory: Where And When To Go
Lake Gregory Regional Park operates a seasonal swim beach with a splash pad, waterslides, and an inflatable waterpark. For 2026, the operator lists full daily swim-beach hours of 10 a.m. to 5 p.m. from June 12 through September 7, with operations subject to closures and county rules.
The broader advertised beach season runs from Memorial Day through Labor Day. Operations around the beginning of that window may follow a reduced schedule, so do not assume the beach is open simply because the surrounding park or shoreline trail is accessible.
Plan to enter through the managed recreation area and follow the boundaries, signs, and staff instructions posted that day. Lake conditions differ from a swimming pool, and the designated beach gives visitors a clearer entry point and access to the park’s beach facilities.
Admission choices can sell out on busy summer days, so compare the currently available beach options before leaving home:
What Does A Swim Day Cost?
A regular beach pass costs $17 per person and includes general park entry, beach access, and the splash pad. An all-access pass costs $32 per person and adds the waterslides and inflatable waterpark.
Children age 3 and younger enter free, but minors must remain under adult supervision. Parking is separate from either beach pass: the first hour costs $2, each added hour costs $1, and the listed daily maximum is $10.
A group of four people who all require tickets would pay $68 for regular beach access or $128 for all-access admission, before parking. The official Lake Gregory beach-pass page lists the current operating dates, hours, inclusions, and closure notices.
| Planning Item | Current Detail | What It Means |
|---|---|---|
| Swimming availability | Seasonal swim beach | Swimming is not a year-round beach activity |
| 2026 daily schedule | June 12–September 7, 10 a.m.–5 p.m. | Check for weather or county closures |
| Regular beach pass | $17 per person | Includes beach and splash pad access |
| All-access pass | $32 per person | Adds waterslides and the inflatable waterpark |
| Young children | Age 3 and younger enter free | Adult supervision is still required |
| Parking | $2 first hour; $10 daily maximum | Parking is not included with admission |
| Dogs | Not allowed on the beach or in gated areas | Service animals are the stated exception |
| Water conditions | Tested and maintained by San Bernardino County | Check current notices before entering the water |
Lake Gregory Swimming Rules And Safety
Visitors should swim only while the beach is operating and stay within the boundaries posted by park staff. Adults remain responsible for supervising children, regardless of whether staff members are present near the water.
Natural lake swimming brings changing depth, cooler patches, limited underwater visibility, and an uneven bottom. Weak swimmers and young children should use a properly fitted life jacket and remain close enough to a responsible adult for immediate help.
- Follow all posted swim-zone boundaries and temporary closure signs.
- Keep children within close reach near the shoreline and splash areas.
- Leave glass containers at home to reduce the risk of cuts on the beach.
- Exit the water when thunder, lightning, strong wind, or sudden poor weather develops.
- Do not bring dogs onto the beach or into gated recreation areas, apart from qualifying service animals.
- Take regular rest breaks if using the slides or inflatable waterpark.
San Bernardino County is responsible for testing, treating, and maintaining the lake’s water quality. A posted closure should always override an older schedule, ticket confirmation, or previous visit.
Waterpark health note: The operator advises against the waterslides and inflatable waterpark for people who are pregnant or have certain heart, back, neck, surgical, or joint conditions.
What Should You Bring To The Beach?
A useful Lake Gregory beach setup includes water shoes, sun protection, drinking water, a towel, and dry clothing for the mountain drive home. Water shoes can make entry more comfortable where the lakebed feels rocky or uneven.
- A swimsuit and a full change of clothes
- Water shoes with secure straps
- Broad-spectrum sunscreen and a brimmed hat
- Refillable drinking-water bottles
- Towels and a waterproof bag for wet clothing
- A personal life jacket for a child or uncertain swimmer
- A phone with enough battery for parking payment and closure checks
The park’s current FAQ permits umbrellas on both the North Shore and South Shore beaches. EZ-Up shelters are allowed on the South Shore and in limited North Shore areas, but available space and posted instructions control where they may be placed.
Where To Stay Near Lake Gregory
Crestline is the closest base for a Lake Gregory swim day and avoids an added mountain drive before the beach opens. Staying nearby also makes it easier to arrive around 10 a.m., when parking and beach space may be easier to find.
Lake Arrowhead has another cluster of lodging and dining choices within the surrounding mountain area, but Crestline remains the more convenient location when swimming is the main purpose of the trip. Compare nearby stays and their distance from the beach on the map:
The Right Plan For Your Swim Day
A smooth Lake Gregory swim day starts with a closure check, an arrival near opening time, and the pass that matches what your group will actually use. Regular admission is enough for swimming and the splash pad; all-access admission makes sense only when the slides and inflatable waterpark are part of the plan.
- Check operations that morning. Confirm that the swim beach is open and look for weather, event, or water-condition notices.
- Arrive close to 10 a.m. Early arrival gives you more time before the 5 p.m. closing hour and may reduce parking pressure.
- Choose admission carefully. Buy the $17 beach pass for swimming and the splash pad, or the $32 pass when your group wants the added attractions.
- Set clear family rules. Pick a meeting point, keep young swimmers close, and use life jackets where ability or conditions call for them.
- Watch the clock and weather. Allow time to change clothes, pack your beach gear, and return to your vehicle before facilities close.
Lake Gregory is a genuine summer swimming destination rather than a lake limited to fishing and boating. Treat it as a paid, seasonal beach visit, follow the day’s posted boundaries, and verify operations before making the mountain drive.
References & Sources
- Lake Gregory Community Recreation Company.“Beach Passes.”Lists the current swim-beach season, hours, admission prices, pass inclusions, age policy, and closure guidance.