Since the summer arrived in the midst of a pandemic, Boston Mayor Martin Walsh has been encouraging residents to get some exercise and cool off by taking a dip at one of the city’s outdoor public pools. With fall now approaching, Walsh on Monday announced that four of the Boston Center for Youth and Families indoor pools would open to the public on Wednesday.

“As we head toward the end of summer, I am pleased we are able to open up indoor swimming options for our residents,” the mayor said. “BCYF has spent a lot of time making sure that safety protocols are in place so that we can open these additional recreational facilities within the current Covid-19 guidelines.

“I encourage residents to take advantage of these options and continue to take all the precautions: wearing face coverings when out, keeping your distance from others, and washing your hands.”

BCYF’s Curtis Hall Pool in Jamaica Plain, Draper Pool in West Roxbury, Flaherty Pool in Roslindale. and Mason Pool in Dorchester will open Wednesday, joining the outdoor Clougherty Pool in Charlestown and the Mirabella Pool in the North End. Swimmers must register for a timeslot.