What is the current water temperature at Lake Umbagog?

Current water temperature for Lake Umbagog is shown in the live forecast above. Most New Hampshire 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 (50ft maximum).

Where is Lake Umbagog located?

Lake Umbagog is in New Hampshire (Coos County), with public access near Errol, Cambridge, Upton. Surface area is 7,850 acres.

How deep is Lake Umbagog?

Lake Umbagog's maximum depth is 50 feet. Deeper lakes carry more thermal inertia and warm more slowly through summer; shallower lakes track the air temperature faster.

New Hampshire · Coos County

Lake Umbagog

Errol · Cambridge · Upton

Loading live conditions for Lake Umbagog…

Surface area7,850acres

Max depth50feet

CountyCoos

Data sourceEWMA modelAir-temp trend

Things to do

Tours & activities on Lake Umbagog

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

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Places to stay

Lake houses & rentals

Vacation rentals right on the water.

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"A remote, mostly-undeveloped lake straddling the NH/ME border in the North Country. Loon-watching, paddling, and Umbagog National Wildlife Refuge make this the quiet alternative to the busy Lakes Region."

Seasonal pattern

When does Lake Umbagog warm up?

Lake Umbagog (max depth 50ft) typically reaches swim-comfortable surface temperatures (65°F+) by early to mid-June in New Hampshire. The live forecast above shows current conditions.

Field notes

About Lake Umbagog

Shallow — water responds quickly to air-temp swings
Half in Maine, half in NH
Federal wildlife refuge — limited shoreline development

Surface area: 7,850 acres
Max depth: 50 ft
County: Coos
Water data: Modeled estimate from air-temp trends