A Nationally Recognized, Award-Winning Aquatic Park Everyone Can Enjoy!

Sea Lion Aquatic Park is an award-winning water park that offers refreshing summertime fun for residents and visitors. It is the perfect venue for birthday parties or other celebrations.

Sea Lion Park features a large open swim area that slopes upward to a zero-depth shallow end, which allows for easy entry into the pool for everyone. With two 50' body flume slides, two drop slides, a vortex pool, splash playground, sand & kiddie water play area, teen pool and more, there's something fun for everyone! Adult and senior designated swim schedules are offered as well.

Sea Lion Aquatic Park offers a full-service concession stand, locker room facilities, party rentals, swimming lessons, water fitness classes, Sea Lion Swim Team activities and special events throughout the summer.

Season Pass Early Bird Discount Ends April 30!

Click Here to Learn More About Our 2020 Sea Lion Aquatic Park Memberships


Hours of Operation

View our 2020 Season Hours

Pre Season: May 23 - May 31

Saturday, May 23 - Sunday May 24
11:00am - Early Admittance for Pass Holders
11:30am-6:00pm - Open Swim
Monday, May 25 (Memorial Day)
11:00am - Early Admittance for Pass Holders
11:30am-6:00pm - Open Swim
Tuesday, May 26 - Friday, May 29
4:00pm-8:00pm - Open Swim

Regular Season: May 30 - August 16

Monday - Friday Tuesday & Thursday
6:00am-6:45am - Adult Swim** 9:00-11:00am - NEW! Tot Swim^
11:30am-8:00pm - Open Swim
11:00am - Early Admittance for Pass Holders
11:30am-8:00pm - Open Swim
10:00am - Early Admittance for Senior Swim***
11:00am - Early Admittance for Pass Holders
11:30am-8:00pm - Open Swim
4th of July (Saturday)
11:00am - Early Admittance for Pass Holders
11:30am-6:00pm - Open Swim
Swim Meet Partial Closures
Due to Sea Lion Swim Team home meets, the lap lanes and a portion of the zero-depth area of the main pool will be closed from 6:00pm-8:00pm. Every attempt will be made to allow as many portions of the park to remain open; however, Sea Lion Aquatic Park Management reserves the right to close designated areas if circumstances warrant. Thank you for your understanding.
Closed from 6:00-8:00pm on:
June 9, 16, 18, 25   |   July 2, 14
Pass Holder Appreciation Nights  |  2020 Pass Holders Only!
Sea Lion Aquatic Park Pass Holders, please join us for a special night in your honor! The pool will be closed to the general public and open late just for you! Bring the family for a night under the stars complete with a DJ, 2021 pool pass raffle, and food specials at Sammy’s Snack Shack! No Registration Necessary
Sunday, June 28 & Sunday, July 26 from 7:00-10:00pm
Pool Closed at 7:00pm
Pool Open from 7:00pm-10:00pm for 2020 Pass Holders ONLY!

^NEW! Tot Swim: Tuesdays & Thursdays, June 2 - August 6

R/NR Fee: $3 / $5 per adult | Free for Pass Holders
Age: 5 & Under with Adult | Each adult can bring up to 2 tots

Patrons who wish to stay for open swim must exit the facility and pay daily fee (unless you’re a pass holder) to re-enter for the day.

**Adult Lap Swim: Monday-Friday, June 1 - August 14

For season pass holders and Community Park Fitness members ages 18 & up.
Passes must be shown to a pool manager at entry. Not a member? Lap swim admission is available for a rate of $3 per day. Please check-in with the on-duty pool manager.

***Senior Swim: Sunday, May 31 - August 16

Allows Lisle Park District residents and season pass holders who are 50+ early admittance to the pool on Sundays. Sunday “Senior Swimmers” are welcome to stay for the remainder of the day at no additional cost. Family members or other guests must pay regular admission rates and cannot enter until 11:00am for pass holders or 11:30am for the general public.

Partial Pool Closures

During our Monday-Thursday evening programming between 5:30pm-6:30pm, portions of the park will be closed. Other areas will remain open for open swim.

End of Season Hours: August 17 - September 7

Due to limited lifeguard staff availability as they return to school, the hours of operation for Sea Lion Aquatic Park for the last three weeks of the season will be as follows:
Monday, August 17 - Friday, August 21
5:00pm-8:00pm - Open Swim
Saturday, August 22 - Sunday, August 23
11:00am - Early Admittance for Pass Holders
11:30am-6:00pm - Open Swim
Monday, August 24 - Friday, August 28
Saturday, August 29 - Sunday, August 30
11:00am - Early Admittance for Pass Holders
11:30am-6:00pm - Open Swim
Monday, August 31 - Friday, September 4
Saturday, September 5 - Monday, September 7
11:00am - Early Admittance for Pass Holders
11:30am-6:00pm - Open Swim


Weather & Other Closings

Sea Lion Aquatic Park will not be in operation under the following conditions and refunds or prorated fees will not be given under the following circumstances:

  • Forecasted weather is below 68 degrees according to the National Weather Service.
  • Lightning, severe rain, or any other condition that would jeopardize swimmer safety.
  • Mechanical failure - if this occurs you will be notified of the option to attend other local facilities.
  • Special events.
  • From time to time, the temperature may be above 68 degrees, however, weather conditions are not appropriate for swimming.
  • Low attendance. (Low attendance closings will be under the discretion of the Sea Lion Aquatic Park Management).
  • Unusual circumstances may also require the closure of pool areas or sections.

Please Note

  • Certain park features may close due low attendance.
  • If the pool is closed at the 11:30am opening, attempts to re-open the pool will be made throughout the day, weather permitting.
  • Refunds, rain checks, or prorated fees are not offered for any type of pool closure. Please refer to our rain check policy below for further details.

Rain Check Policy
  • A re-entry pass will be issued only to person(s) who paid a daily fee and within 2-hours of purchase if the facility closes for the day due to inclement weather. Rain check re-entry passes will be valid until the end of the season in which the pass was issued. In order to redeem rain check re-entry pass, patrons must show a valid entry receipt.

Call 630-964-3410, ext. 2, opt. 2 for daily pool opening and closing information.


Contact Information

From time to time the pool may be closed for a specific reason, you may have an emergency and need to contact someone at the facility, need last minute swim lesson information, or have other questions about pool events and operation. Please utilize these phone numbers, check the website, and look at the Sea Lion Aquatic Park sign for updates on pool happenings.

Phone Hotline: 630-964-3410, ext. 2, opt. 2

  • Option 1 - (Hours and Fees)
  • Option 2 - (Daily Pool Update / Weather / Closings)
  • Option 3 - (Facility Rentals and Birthday Parties)
  • Option 4 - (Swim Lesson Hotline)
  • Option 5 - (Swim Team Hotline)
  • Option 6 - (Pool Manager)
  • Option 7 - (Lifeguard Office)

Emergencies: 630-964-3410, ext. 4321

Rental, Birthday Party, or Group Reservations: Laura Cavazos, 630-353-4308

Email: lcavazos@lisleparkdistrict.org