Swim and Tennis Association

Summer fun for your whole family!

The Belmont Day Swim & Tennis Association (STA) provides families and individuals with access to the swimming pool, tennis courts, fields, and play structure. 

Membership is open to school and summer camp families, faculty and staff, alumni, neighbors, and to the public on a first-come, first-served basis until we reach maximum capacity. Contact summer@belmontday.org for more information.

Membership Fees 2023

Family Membership – $800

  • Membership includes a family of four + 2 guest passes
  • Membership is for immediate family members only
  • Extra named member after a family of four is $150
  • There is no charge for children under 6-months-old

Individual Adult Membership – $260 per person
Individual memberships are intended for adults. Purchasing an individual adult membership also grants access to the pool during our adults-only swim from 10-11 a.m. on weekends.

Hours of Operation

June 20 to August 4

  • Monday to Friday: 4:15 to 8:15 p.m.
  • Saturday and Sunday, 10 to 11 a.m.: Adult members only
  • Saturday and Sunday: 11 a.m. to 7 p.m.

On weekends, there are two lifeguard breaks from 1 to 1:45 p.m. and 5 to 5:45 p.m. The pool is closed at these times.

August 4 to August 25*

  • Monday to Friday: 4:15 to 7:30 p.m.*
  • Saturday and Sunday, 10 to 11 a.m.: Adult members only
  • Saturday and Sunday: 11 a.m. to 7 p.m.

*On or around August 4, sunset begins to occur before 8 p.m. Because our pool is not lit, we adjust the pool hours accordingly.

On weekends, there are two lifeguard breaks from 1 to 1:45 p.m. and 5 to 5:45 p.m. The pool is closed at these times.

August 26 to September 4

  • Daily: 11 a.m. to 7 p.m.

During our last week of operation, when summer camp is over, the weekend schedule will be in place every day. During these days, there will be two lifeguard breaks from 1 to 1:45 p.m. and 5 to 5:45 p.m. The pool is closed at these times.

Important Information Regarding Inclement Weather

The pool will be closed:

  • When a National Weather Service Storm Watch or Warning is in effect for the area.
  • When thunder can be heard or lightning can be seen, or a steady rain is falling.

The pool will reopen within 30 minutes after weather conditions return to normal.


If you have a camp aged-child (that is not attending summer camp), please complete the application on their behalf. We will follow up with you to get information about your other named members. If you do not have a camp aged-child, or your child is already enrolled in our camp programs, please complete the application as yourself and select 12+ in the grade field.


To ensure that all of our members can enjoy our facilities we ask that you understand and adhere to the following policies. Additionally, all members and their guests using the the pool do so at their own risk. Belmont Day and its personnel are not responsible for accident, injury, or loss or damage of personal property.

General policies for members and guests

  • Members must check in upon arrival to the pool. You can check in with the lifeguard on duty
  • Speed limit on Day School Lane is 10 m.p.h.
  • Belmont Day prohibits smoking, the use of alcoholic beverages, and dogs on all school grounds.
  • Picnics on the grounds are encouraged, but members and guests are responsible for discarding all refuse. Please use a carry-in, carry-out procedure when possible. Food and drink are not permitted inside the fenced area around the pool.
  • Audio devices may only be used with earphones or played at low volume. Earphones may not be worn in the pool area.
  • Minors must be accompanied at all times by a parent/guardian or nanny/babysitter.
  • If you are sick, follow all applicable COVID-19 guidance for testing and quarantine before returning to the pool.

Failure to follow these policies can result in a revocation of membership without refund.

Our two pools are a wonderful way to cool off and enjoy the summer. We invite you to take a dip and beat the summer heat. To ensure everyone’s safety in the pools, we have the following policies regarding pool use.

  • Please close the gates when entering or leaving the pool. These gates are legally required to be locked at all times guests are not actively entering or exiting the pool area.
  • Children under the age of fifteen must pass the Basic Swim Test and have their names entered on the lifeguard’s list of qualified swimmers in order to use the deep end of the pool. Children under the age of fifteen who have not passed the Basic Swim Test must be accompanied by an adult in any part of the fenced-in pool enclosure, including the practice pool.
  • Inside the pool fence area there is absolutely no:
    • running, pushing, or wrestling
    • smoking
    • throwing objects into pool
    • eating, drinking, or gum chewing
    • climbing on the lifeguard’s chair
  • Playing “catch” with safe objects in the pool is permitted at the lifeguard’s discretion. Members must always check with the lifeguard before beginning a game. The lifeguard reserves the right to temporarily confiscate any object being used unsafely in the pool.
  • Small inflatable flotation devices are permitted in the practice pool but prohibited in the main pool.
  • If the pool is too crowded to maintain safe conditions the lifeguard may rotate swimmers.
  • Only STA staff are permitted in the pool house.
  • The pool may not be used by anyone with an open wound, head cold, inflamed eyes, cough, or congestion. All band-aids and bandages must be removed before a swimmer enters the pool.
  • Follow all posted rules and guidelines. Failure to follow these rules may result in revocation of membership without refund.
  • When a member brings a guest they must:
    • introduce the guest to the lifeguard
    • punch your guest card
    • ensure that the guest complies with STA rules
    • be present at the pool for the entire duration of the guest’s visit
Basic Swim Test
  • Jump into the deep end of the pool
  • Level off
  • Using a recognizable front crawl stroke, swim to the middle of the pool
  • Back float for 20 seconds
  • Using the front crawl, swim to the shallow end of the pool
Practice Pool
The practice pool is intended for children under six and those who cannot swim. Children in the practice pool area must be accompanied by an adult at all times.
Scroll to Top

Admissions Open House Events

SUNDAY, OCTOBER 15, 2023, 9 A.M. TO 1 P.M.

SATURDAY, NOVEMBER 18, 2023, 9 TO 10:30 A.M.