The Best Adirondack Lakes for Swimming.
The Adirondack Park has roughly 3,000 named waters — but not all of them are great for swimming. Some are too cold, too tannic, too remote, or too motorized. The five below are picked for public access (no trespassing required), water clarity, beach quality, and the basic infrastructure that makes a day at the lake actually work — parking, restrooms, lifeguarded or near-lifeguarded sections.
Three are village or town beaches (Lake Placid's Mirror Lake, Lake George's Million Dollar Beach, Schroon Lake's Town Beach). Two are quieter wilderness-adjacent picks. Together they cover the spectrum from 'walk-in family afternoon' to 'paddle out and swim from a rock.'
Note: every Adirondack swimming spot is unguarded outside the lifeguard season (typically Memorial Day through Labor Day) and at non-designated beaches. Cold-water shock is a real risk in early June; swim with company.
Ranked, and reasoned.
Mirror Lake.
131 ac · Lake Placid village · public beachThe village swimming lake. Mirror Lake bans motorboats, runs a public beach with lifeguards in summer, and stays warmer than most because it's shallow and sheltered. From the beach you look across to the Olympic ski jumps — Lake Placid's signature view. The right pick for a Lake Placid base.
Open the Page→Lake George — Million Dollar Beach.
32 mi long · 28,116 ac · public NY state beachThe classic Adirondack swimming lake. Million Dollar Beach in Lake George village is the state-run public beach: a long sand crescent, lifeguards, bathhouses, and shallow protected water that warms into the mid-70s by July. The southernmost (and southernmost-warm) of the major swimming lakes.
Open the Page→Schroon Lake — Town Beach.
4,233 ac · town beach + dock · Essex CountySchroon's Town Beach is the underrated alternative to Lake George — same family-friendly vibe, less than half the crowds, with a long dock for jumping and shallow shoreline for wading. Free public parking; the hamlet (restaurants, ice cream) is a walk away.
Open the Page→Eagle Lake.
428 ac · Hague · DEC boat launch nearbyQuieter Lake George region pick. Eagle Lake (between Brant Lake and Schroon Lake) has a small public access point and clean shoreline swimming. The lake is small enough to paddle across in 20 minutes — meaning you can paddle to a rock and swim off it without feeling like you're in the way of traffic.
Open the Page→Cranberry Lake.
6,944 ac · St. Lawrence County · DEC campgroundWilderness-feel swimming. Cranberry Lake is on the northwestern fringe of the Park, surrounded by the Five Ponds Wilderness, with a DEC campground beach. Tannic water (root beer color) but clean and refreshing — and you'll share the lake with maybe a dozen other people on a peak summer day.
Open the Page→Asked at the trailhead.
For family infrastructure: Lake George's Million Dollar Beach (state-run, lifeguards, sand). For village convenience: Mirror Lake in Lake Placid. For wilderness solitude: Cranberry Lake.
Yes — most of the larger hamlets maintain public town beaches (Lake Placid / Mirror Lake, Lake George / Million Dollar Beach, Schroon Lake Town Beach, Saranac Lake, Long Lake). Many DEC campgrounds also have day-use beach access for a small fee.
Variable. Shallow, sheltered lakes (Mirror, Schroon's south end) warm to the low 70s by mid-July. Larger, deeper lakes (Lake George, Saranac Lake) sit in the 60s most of summer. High Peaks ponds and northern lakes stay genuinely cold (50s-low 60s) all year.
Varies. State-run beaches (like Million Dollar Beach) typically prohibit dogs. Town beaches vary; some allow dogs on leash off-hours, others not at all. DEC campground beaches usually allow leashed dogs. Check the specific town or DEC site before going.
The Adirondack Park has dozens of waterfalls with safe swimming pools at the base — Split Rock Falls (Elizabethtown), Roaring Brook Falls (St. Huberts), Bog River Falls (Tupper Lake), and many smaller ones. See our beaches-and-swimming-holes field guide for the full list.
Continue with The Beaches & Swimming Holes guide.
The full field guide goes deeper — route planning, seasonal timing, gear, and the long-form editorial behind these picks.