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Sunapee Lake

Sunapee Lake Current Water Temperature and Forecast

On this page, you will find comprehensive information about the water temperature in Sunapee Lake, including current readings, historical data and trends, monthly averages, as well as weather forecasts and upcoming temperature predictions. We find every spot where you can swim and tell you what the water temperature is there today and throughout the year.

Current Lake Water Temperature Information

7.1°C

TODAY

5.6°C

YESTERDAY

3.1°C

A WEEK AGO

As of today, the minimum water temperature in the Sunapee Lake ranges from 41°F (5°C) to 47°F (8°C). This water temperature is still quite low, and swimming in such conditions may only be comfortable for hardened individuals. It is recommended to limit the time spent in the water to avoid hypothermia. For those not accustomed to cold water, it is better to refrain from swimming. However, if you decide to enter the water, it is advisable to wear a warm wetsuit for protection against the cold.

It is important to note that these swimming tips and recommendations apply only in good weather. When the air temperature is below 68°F (20°C), and sometimes even below 77°F (25°C), swimming can be unpleasant even with relatively high water temperatures.

Analysis, Historical Data, and Forecast of Water Temperature

Water Temperature Chart for Sunapee Lake Over the Last 30 Days

Today the water temperature in Sunapee Lake is lower than the same day in previous years. The water temperature range here in April is from 1°C to 16°C. The water temperature is trending upward, and it has increased both over the past 30 days and the past week.

The forecasted water temperature values for Sunapee Lake are presented in the table below.

The actual water temperature values near the shore may differ by a few degrees from the stated values. For the development of the forecast, we use our own mathematical model that takes into account the current water temperature changes, historical data, and key weather trends, including wind strength and direction, and air temperature in each specific region.

Daily Water Temperature Chart

DateCurrentAverageForecast
Apr 213.1°C8.5°C
Apr 223.6°C8.5°C
Apr 233.5°C8.5°C
Apr 243.6°C8.5°C
Apr 253.6°C8.5°C
Apr 263.6°C8.5°C
Apr 275.6°C8.5°C
Apr 285.6°C8.5°C
Apr 298.5°C7.2°C
Apr 308.5°C7.3°C
May 116.1°C7.9°C
May 216.1°C8.4°C
May 316.1°C8.9°C
May 416.1°C9.4°C
May 516.1°C9.8°C
May 616.1°C10.2°C
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast

Water Temperature Ranges in Sunapee Lake by Month

January

MinimumAverageMaximum
1°C8°C15°C

February

MinimumAverageMaximum
1°C7°C13°C

March

MinimumAverageMaximum
0°C6.5°C13°C

April

MinimumAverageMaximum
1°C8.5°C16°C

May

MinimumAverageMaximum
14°C16.1°C19°C

June

MinimumAverageMaximum
15°C17.8°C20°C

July

MinimumAverageMaximum
26°C28.9°C31°C

August

MinimumAverageMaximum
21°C23.3°C26°C

September

MinimumAverageMaximum
19°C21.7°C24°C

October

MinimumAverageMaximum
14°C16.1°C19°C

November

MinimumAverageMaximum
6°C8.9°C11°C

December

MinimumAverageMaximum
3°C5°C7°C

Monthly Water Temperature Histogram for Sunapee Lake

Known Beaches in the Area of Sunapee Lake?

Dewey Beach

Dewey Beach is a 4-stars sandy beach, located in a 3 km (2 miles) radius of Sunapee Lake. There are lifeguards on the beach. There is parking. Snorkeling is possible. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.

No Dragon Beach

No Dragon Beach is a 3-stars sandy beach, located in a 3 km (2 miles) radius of Sunapee Lake. There are lifeguards on the beach. There is parking. Snorkeling is possible.

State Park Beach

State Park Beach is a 1-stars sandy beach, located in a 4 km (2 miles) radius of Sunapee Lake.

Lake Sunapee State Beach

Lake Sunapee State Beach is a 3-stars sandy beach, located in a 4 km (2 miles) radius of Sunapee Lake. There is parking. There are cafés. Lake Sunapee State Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible.

Sunapee State Beach

Sunapee State Beach is a 5-stars sandy beach, located in a 4 km (2 miles) radius of Sunapee Lake. There are lifeguards on the beach. There is parking. There are restrooms. Sunapee State Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. Snorkeling is possible. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.

George's Mills Boat Ramp

George's Mills Boat Ramp is a 2-stars sandy beach, located in a 6 km (4 miles) radius of Sunapee Lake. There is parking.

Newbury Beach

Newbury Beach is a 2-stars sandy beach, located in a 6 km (4 miles) radius of Sunapee Lake. There is parking. Snorkeling is possible.

Bucklin Beach

Bucklin Beach is a 1-stars pebble beach, located in a 8 km (5 miles) radius of Sunapee Lake. There is parking.

Wadleigh State Park

Wadleigh State Park is a 4-stars sandy beach, located in a 9 km (6 miles) radius of Sunapee Lake. There are lifeguards on the beach. There are restrooms. Wadleigh State Park is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish. The calm waters make this beach ideal for swimming, providing a safe and enjoyable experience for all visitors.

Wadleigh State Beach

Wadleigh State Beach is a 3-stars sandy beach, located in a 9 km (6 miles) radius of Sunapee Lake. There is parking. There are restrooms. Wadleigh State Beach is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish.

Sunapee Lake Weather

APRIL 29

7°C / 23°C
overcast

rain: 6% | wind: 22 km/h

APRIL 30

5°C / 18°C
light drizzle

rain: 22% | wind: 27 km/h

MAY 1

1°C / 17°C
overcast

rain: 10% | wind: 14 km/h

MAY 2

7°C / 15°C
moderate drizzle

rain: 46% | wind: 20 km/h

Water Temperature in Sunapee Lake: General Trends and Swimming Opportunities

Sunapee Lake is located in the state of New Hampshire, in the counties of Merrimack, Sullivan, at an elevation of 1089 feet (332 meters) above sea level.

Sunapee Lake is a medium lake. Its surface area is 6.4 sq mi (16.7 sq km). Typically versatile lakes with developed ecosystems; popular for water sports and tourism.

The water temperature in Sunapee Lake varies throughout the year, ranging from 37°F (3°C) in December to 88°F (31°C) in July. The average annual water temperature of the lake is 59°F (15°C). The months when the average water temperature in Sunapee Lake exceeds 68 degrees Fahrenheit (20°C) are July, August and September.

The nearest cities ans towns to Sunapee Lake are: Sunapee, Newbury, New London, Sutton, Newport, Springfield, Wilmot, Grantham, Unity, Lempster in New Hampshire.

Geographical Location of Sunapee Lake

Frequently Asked Questions About Sunapee Lake and its Water Temperatures

What is the current water temperature in Sunapee Lake?

The water temperature today in Sunapee Lake is 45°F (7.1°C).

What is the water temperature in Sunapee Lake during the summer months?

The average water temperature in Sunapee Lake during the summer months is typically between 64°F to 84°F (18°C to 29°C), and it can reach up to 88°F (31°C) at its warmest. However, in some years, the temperature may exceed this range.

What is the water temperature in Sunapee Lake in May?

The average water temperature in Sunapee Lake in May ranges from 57°F to 66°F (14°C to 19°C).

What is the water temperature in Sunapee Lake in September?

The average water temperature in Sunapee Lake in September is typically between 66°F to 75°F (19°C to 24°C).

Where is Sunapee Lake located?

Sunapee Lake is located in the United States in the state of New Hampshire, in the counties of Merrimack, Sullivan, at an elevation of 1089 feet (332 meters) above sea level. The surface area of the lake is 6.446 sq mi (16.69 sq km).

Is it possible to swim in Sunapee Lake and what are the possibilities for this?

Yes, it is possible to swim in Sunapee Lake, New Hampshire. The lake has public beaches like Sunapee State Park for swimming, as well as boating opportunities for its visitors.

What are the coordinates of Sunapee Lake?

Sunapee Lake is located at coordinates 43.3760°N 72.0530°W.

Is Lake Sunapee Lake a popular vacation spot among Americans?

Sunapee Lake enjoys local popularity among the residents of State New Hampshire, and nationally, it ranks in the top 10 percent of all lakes in the country.

What species of fish can be found in Sunapee Lake?

Sunapee Lake is home to fish species such as Lake trout (best caught in Spring, Fall), Rainbow trout (Spring, Fall), Brown trout (Spring, Fall), Smallmouth bass (Spring, Fall), Largemouth bass (Spring, Fall), Chain pickerel (Spring, Fall), Yellow perch (Spring, Winter), White perch (Spring, Summer), Black crappie (Spring, Fall).