What is the current water temperature at Moosehead Lake?

Current water temperature for Moosehead Lake is shown in the live forecast above. Most Maine lakes have no public real-time water-temperature sensor, so we estimate from recent and forecast air-temperature trends weighted by the lake's depth (246ft maximum).

Where is Moosehead Lake located?

Moosehead Lake is in Maine (Piscataquis County), with public access near Greenville, Rockwood, Greenville Junction. Surface area is 75,471 acres.

How deep is Moosehead Lake?

Moosehead Lake's maximum depth is 246 feet. Deeper lakes carry more thermal inertia and warm more slowly through summer; shallower lakes track the air temperature faster.

How warm does Moosehead Lake get in summer?

Moosehead Lake, Maine's largest, is deep (246ft max) and northern, so it warms slowly. Peak surface temperatures typically reach the mid 60s to low 70s°F in July and August. Shallow coves warm faster.

When does Moosehead Lake freeze?

Moosehead Lake typically ices over by mid-December and stays frozen through April. Ice-out varies year to year with weather patterns; check the 30-day trend for spring conditions.

Maine · Piscataquis County

Moosehead Lake

Greenville · Rockwood · Greenville Junction

Loading live conditions for Moosehead Lake…

Surface area75,471acres

Max depth246feet

CountyPiscataquis

Data sourceEWMA modelAir-temp trend

Things to do

Tours & activities on Moosehead Lake

Boat cruises, fishing trips, kayak rentals, and guided adventures from local operators.

Browse activities on Viator

Places to stay

Lake houses & rentals

Vacation rentals right on the water.

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"The largest lake entirely within New England (75,000 acres). Deep in the Maine North Woods, far from population centers — moose outnumber people. Wilderness fishing camps and seaplane tours; not a quick weekend trip but the defining experience of remote-Maine vacation."

Seasonal pattern

When does Moosehead Lake warm up?

Moosehead Lake is deep (max depth 246ft) 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 Moosehead Lake

Largest lake entirely in New England
Surrounded by working timberland — limited shoreline development
Moose seen daily; sightings part of the tourism draw
Mt. Kineo rises straight from the shore — climbable in a half day

Surface area: 75,471 acres
Max depth: 246 ft
County: Piscataquis
Water data: Modeled estimate from air-temp trends