11 Best Swimming Holes In New Hampshire

New Hampshire has just 18 miles of ocean coastline, but the Granite State makes up for it with over 1,000 lakes and countless rivers cutting through mountain terrain. The result is some of the best natural swimming in the northeastern United States — waterfalls pouring into deep green pools, granite-carved gorges, and cold mountain streams with rope swings and natural waterslides. Here are 11 of the best swimming holes in New Hampshire, from easy roadside stops to spots that require a hike to earn your swim.

1. Diana’s Baths — North Conway

Diana’s Baths is one of the most popular swimming spots in the White Mountains, and for good reason. A short, flat walk from the trailhead leads to a series of cascading waterfalls spread across roughly 75 feet of vertical drop, with wading pools at multiple levels. The shallow pools and smooth rock make it well suited for families with young children, while the upper tiers have deeper pools for swimming. It gets crowded on summer weekends and holidays — go early or on a weekday for a more relaxed experience. A White Mountain National Forest parking pass ($5/day or $30/year) is required at the trailhead.

2. Swiftwater Falls — Bath

Swiftwater Falls is the quintessential New England swimming hole: a double-drop waterfall on the Wild Ammonoosuc River with a large pool at the base, framed by the historic Swiftwater Covered Bridge (built in 1849). The rock face works as a natural slide, and the pool below is deep enough for jumping. Because this stretch of the river faces southwest, the water warms faster than many White Mountain spots, making it more comfortable for extended swimming on hot summer days. Park just past the covered bridge. If you’re exploring covered bridges and scenic drives in the region, the White Mountains have plenty of both.

3. Jackson Falls — Jackson

Jackson Falls is one of New Hampshire’s best-known swimming destinations — a long series of cascades along the Wildcat River right at the edge of the village of Jackson. The cascading rock extends for several hundred feet, with pools of varying depths for wading, swimming, and sunbathing on flat granite slabs. It’s extremely popular and busy on summer weekends, but the length of the cascade means there’s usually room to spread out. For a quieter experience, walk downstream to the Lower Falls across from The Wentworth hotel — though be aware that the current there can be stronger and more tiring for swimmers.

4. Franconia Falls — Lincoln (via Franconia Brook Trail)

Reaching Franconia Falls requires a roughly 3-mile hike one way with about 400 feet of elevation gain — making it one of the more effort-intensive spots on this list, but it’s an easy, mostly flat walk. The payoff is worth it: broad, smooth granite slabs perfect for sunbathing, pools of varying sizes and depths, and two natural waterslides when water levels are right (the best one is about 20 feet long near the base of the main falls). A WMNF parking pass is required at the trailhead. This is a great option for combining a morning hike with an afternoon swim.

5. Smarts Brook Trail Swimming Hole — Waterville Valley

About 1.1 miles along the Smarts Brook Trail, you’ll reach a waterfall that spills into a deep green pool — reportedly up to 10 feet deep — shaded by forest canopy. Rope swings are often strung near the water’s edge. The water is clear and cold, and the setting feels secluded even though you’re not far from the road. Do not attempt to slide down the cascades — there are sharp rocks at the base. This is a short enough hike to pair with other nearby White Mountain trails for a full day out.

6. Emerald Pool — Chatham (off Baldface Circle Trail)

Emerald Pool sits about 0.8 miles from the start of the Baldface Circle Trail and earns its name from its striking green color. The pool is fed by snowmelt and stays cold even in midsummer. It’s a small swimming hole, which means it can feel crowded on busy summer days — visit on a weekday or early morning for the best experience. The pool has a history as an informal clothing-optional spot, though this is no longer legal. The hike in is short but the Baldface Circle Trail itself is one of the more challenging loops in the White Mountains, so you can combine the swim with a full-day hike if you’re up for it.

7. Sculptured Rocks Natural Area — Groton

Over thousands of years, the Cockermouth River carved a narrow gorge through bedrock here, creating sculpted rock formations unlike anything else in the state. The result is a series of smooth, curving rock walls and pools that feel almost otherworldly. Swimming is only safe when water levels are low — when the river is running high, the current through the narrow gorge is dangerously strong and can pin swimmers against the rock walls. Swim at your own risk and check conditions before getting in. The site is part of the New Hampshire State Park system, and there is a small entrance fee.

8. Rattle River — Shelburne (near Appalachian Trail)

The Rattle River offers several informal swimming spots along its length, making it one of the less crowded options on this list. Whether you’re a thru-hiker on the Appalachian Trail looking for a midday cool-down or just driving through the area, the river’s banks are good for a quick dip and a lunch stop. The water is cold and the setting is peaceful — no facilities, just river and forest.

9. Mill City Park — Franklin

Mill City Park on the Winnipesaukee River is New England’s first whitewater park, and it’s now well established. Phase I opened in June 2022 with the park’s first engineered whitewater wave, and Phase II construction — adding two more whitewater features including New England’s first river surfing wave — is expected to be completed in April 2026. The $5 million project has already sparked significant economic revitalization in downtown Franklin, with new restaurants, breweries, and housing following the park’s opening.

The park is free to use and open year-round. It’s primarily a kayaking and river surfing destination, but the Winnipesaukee River through downtown Franklin is swimmable, and the park’s amphitheater and riverfront make it a great spectator spot. The full buildout will eventually include 13 acres of parkland with trails, alongside 21 acres of conservation land. For more on New Hampshire water activities, Newfound Lake is one of the cleanest swimming lakes in the state.

10. Lakes of the Clouds — Mount Washington (Alpine Zone)

At roughly 5,000 feet elevation, just 1.5 miles below the summit of Mount Washington, the two Lakes of the Clouds are about as extreme as swimming gets in New Hampshire. The water is extremely cold — alpine conditions at this elevation mean temperatures barely above freezing even in summer. The smaller lake is slightly warmer and shallower. This is not a casual swim — it’s a bragging-rights dip after a serious mountain hike, and hypothermia is a real risk with any extended exposure. The Lakes of the Clouds Hut (AMC) is nearby for warming up with a hot drink afterward. Only attempt this if you’re already hiking in the Presidential Range.

11. Saco River near Humphrey’s Ledge — North Conway

While North Conway’s swimming holes draw most of the attention, the stretch of the Saco River near Humphrey’s Ledge offers a quieter alternative. You can hike to the top of Humphrey’s Ledge for views, then cool off in the river below. It’s a good pairing with Diana’s Baths — hit the Baths first to beat the crowds, then drive up the road to the Humphrey’s Ledge Recreation Area for a more relaxed afternoon swim. The Saco River is generally gentle here with sandy banks and shallow sections well suited for families.

Safety Tips for NH Swimming Holes

New Hampshire’s swimming holes are beautiful but unmonitored. There are no lifeguards at any of these spots. A few things to keep in mind:

Water temperature: Mountain-fed water in New Hampshire is cold, often shockingly so. Even in July, water temperatures can be in the 50s and 60s°F. Hypothermia is possible with extended exposure, especially at higher elevations. Enter gradually and know your limits.

Current and water levels: Several of these spots — particularly Sculptured Rocks, Jackson Falls (Lower Falls), and the Saco River — can become dangerous when water is running high after rain. Strong currents can exhaust swimmers quickly. If the water looks fast or high, stay out.

Footwear: Wear shoes with grip. The rocks at most swimming holes are slippery when wet, and walking on river rock in bare feet is a recipe for a cut or a fall.

Parking and fees: Many White Mountain swimming holes require a WMNF parking pass ($5/day or $30/year). Sculptured Rocks has a state park entrance fee. Parking can fill up fast on summer weekends — arrive early.

For more New Hampshire outdoor planning, check out Merrymeeting Lake for one of the cleanest lake swimming experiences in the state, or explore hidden gem vacation spots on the East Coast for broader trip planning.