New Hampshire · Grafton County
Newfound Lake
Bristol · Hebron · Bridgewater · Alexandria
Loading live conditions for Newfound Lake…
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Plan your visit to Newfound Lake
Things to doTours & activities on Newfound Lake
Boat cruises, fishing trips, kayak rentals, and guided adventures from local operators.
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Places to stayLake houses & rentals
Vacation rentals right on the water.
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"Spring-fed, exceptionally deep, and known for some of the cleanest water in New England. Newfound stays measurably colder than other lakes through midsummer — refreshing if you like cold water, brutal if you don't."
Seasonal pattern
When does Newfound Lake warm up?
Newfound Lake is deep (max depth 183ft) and carries significant thermal inertia, so it warms slowly — surface temperatures typically don't reach comfortable swimming range until late June or early July. Spring-fed or alpine lakes stay cooler all summer. The live forecast above shows current conditions.
Field notes
About Newfound Lake
- Spring-fed — runs noticeably colder than other lakes through summer
- Very deep (183ft) carries strong thermal inertia
- Wellington State Park on the west shore
- Surface area
- 4,106 acres
- Max depth
- 183 ft
- County
- Grafton
- Water data
- Modeled estimate from air-temp trends