Among the best things about September is the moment when warm afternoons give way to chillier evenings. When it's just a little too cold for a dip in the pool, a hot tub is the perfect answer. These three Chester County estates offer lovely spas and perfect accompanying views of the soon-to-turn foliage.

1414 Birchrun Road, Chester Springs
$3,900,000
Monthly taxes: $4,193
Tell me all about it: "Auldridge" is situated on 63 acres, and with just one bedroom, it is the perfect private retreat. The property includes an in-ground pool, spa, par-three golf hole, and stocked pond. The grounds also include a private orchard and multiple hiking paths. The property is divided three parcels (included in the sale), including a 12-lot subdivision, a 13-acre parcel with barn, and a 9-acre wooded parcel.

Courtesy of Fox Roach
Courtesy of Fox Roach

614 Coltsfoot Drive, West Chester
$2,295,000
Monthly taxes: $1,706
Tell me all about it: We love this four-bedroom Mediterranean home set on 3.85 acres. In addition to a hot tub, the lower level features a family room, wine cellar, sound-proofed recording studio, and sauna. The fourth bedroom there is currently being used as an exercise room. The property also boasts smart technology controlled by iPad on each floor of the home.

614 Coltsfoot Drive in West Chester is on the market for $2,295,000.
Courtesy of Sotheby's
614 Coltsfoot Drive in West Chester is on the market for $2,295,000.
Courtesy of Sotheby's
Courtesy of Sotheby's

736 White Horse Road, Berwyn
Price: $6,250,000
Monthly taxes: $6,719
Tell me all about it: This five-bedroom home occupies more than 45 acres and includes an original stone farmhouse dating to the 1700s. Inside, the updated home includes a gourmet kitchen and formal dining room as well as a fabulous wet bar. The master suite includes a private balcony, dual bathrooms and a sitting area. Outside, a huge flagstone pool is flanked by a hot tub with views of the extensive grounds.

736 White Horse Rd. in Berwyn is on the market for $6,250,000.
Courtesy of Fox Roach
736 White Horse Rd. in Berwyn is on the market for $6,250,000.
Courtesy of Fox Roach
Courtesy of Fox Roach