Swimming conditions at Chebeague Island's beaches are generally safe during summer months, though the water remains cold even in July and August (typically 55-65°F). The beaches have gentle slopes and calm waters in Casco Bay, making them suitable for families. However, there are no lifeguards on duty, so swim at your own risk. Check tide schedules as some areas become rocky at low tide. Jellyfish occasionally appear in late summer. Always supervise children closely and be aware of boat traffic in nearby channels.

Late June through early September offers the warmest weather and most reliable ferry service, with temperatures ranging from 70-80°F. July and August are peak season with the warmest (though still chilly) water temperatures. Spring and fall provide quieter visits with beautiful scenery, ideal for beachcombing and walking, though swimming is uncomfortable. Winter access is limited with reduced ferry schedules, but the island offers peaceful, scenic walks year-round. Weekdays are less crowded than weekends during summer months.

Chebeague Island is accessible only by boat. Casco Bay Lines operates year-round ferry service from Portland (approximately 1 hour 15 minutes) and seasonal service from Cousins Island in Yarmouth (15 minutes). The Chebeague Transportation Company runs a faster passenger-only ferry from Cousins Island. Once on the island, beaches are accessible by bicycle, golf cart, or the island's seasonal bus service. Parking is available at ferry terminals on the mainland. Many visitors rent bikes or golf carts upon arrival to explore the island's various beach access points.

Chebeague Island has limited but charming options. The Niblic Restaurant serves lunch and dinner seasonally, while Slow Bell Café offers casual dining. The island has one small general store for basic supplies and snacks. Lodging includes The Chebeague Island Inn and several vacation rental cottages, though options are limited so book well ahead for summer. Many visitors day-trip from Portland. Bring picnic supplies from the mainland if planning a beach day, as dining options close in off-season and have limited hours even during summer.

Chebeague Island is Maine's most populated unbridged island and welcomes visitors to explore beyond its beaches. The island spans about 5 miles long with scenic roads perfect for biking, featuring historic homes, working farms, and multiple beach access points around its perimeter. Notable spots include the Chebeague Island Historical Society Museum and various public shore access areas. Most of the island is privately owned, but public ways lead to beaches. Bike rentals are available near the ferry dock, making it easy to tour the entire island in a day while enjoying multiple beach spots.