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Lake Sullivan

Lake Sullivan Current Water Temperature and Forecast

On this page, you will find comprehensive information about the water temperature in Lake Sullivan, 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

21.5°C

TODAY

21.9°C

YESTERDAY

22.0°C

A WEEK AGO

As of today, the minimum water temperature in the Lake Sullivan ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience.

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 Lake Sullivan Over the Last 30 Days

Today the water temperature in Lake Sullivan is lower than the same day in previous years. The water temperature range here in September is from 22°C to 31°C. The water temperature has decreased over the past 7 days but has increased over the past month.

The forecasted water temperature values for Lake Sullivan 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
Sep 822.0°C26.5°C
Sep 921.6°C26.5°C
Sep 1021.6°C26.5°C
Sep 1121.6°C26.5°C
Sep 1221.6°C26.5°C
Sep 1322.0°C26.5°C
Sep 1421.9°C26.5°C
Sep 1521.5°C26.5°C
Sep 1626.5°C21.8°C
Sep 1726.5°C22.1°C
Sep 1826.5°C22.4°C
Sep 1926.5°C22.7°C
Sep 2026.5°C22.9°C
Sep 2126.5°C23.1°C
Sep 2226.5°C23.3°C
Sep 2326.5°C23.5°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 Lake Sullivan by Month

January

MinimumAverageMaximum
0°C1.7°C4°C

February

MinimumAverageMaximum
0°C3.5°C7°C

March

MinimumAverageMaximum
1°C8°C15°C

April

MinimumAverageMaximum
10°C13°C16°C

May

MinimumAverageMaximum
17°C20.5°C24°C

June

MinimumAverageMaximum
19°C22.5°C26°C

July

MinimumAverageMaximum
23°C27°C31°C

August

MinimumAverageMaximum
23°C26.5°C30°C

September

MinimumAverageMaximum
22°C26.5°C31°C

October

MinimumAverageMaximum
16°C18.9°C21°C

November

MinimumAverageMaximum
8°C10.6°C13°C

December

MinimumAverageMaximum
3°C5°C7°C

Monthly Water Temperature Histogram for Lake Sullivan

Known Beaches in the Area of Lake Sullivan?

Sullivan County Park & Lake

Sullivan County Park & Lake is a 3-stars sandy beach, is located directly in Lake Sullivan. There is parking. There are restrooms. Sullivan County Park & Lake is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish.

Sullivan County Park & Lake

Sullivan County Park & Lake is a 1-stars sandy beach, is located directly in Lake Sullivan.

Sullivan County Park &Lake Beach Area

Sullivan County Park &Lake Beach Area is a 1-stars sandy beach, is located directly in Lake Sullivan.

Sullivan County Park &Lake Beach Area

Sullivan County Park &Lake Beach Area is a 3-stars sandy beach, is located directly in Lake Sullivan. There is parking. There are restrooms. Sullivan County Park &Lake Beach Area is an excellent spot for fishing enthusiasts, offering good opportunities to catch local fish.

Lake Sullivan Weather

SEPTEMBER 16

17°C / 34°C
partly cloudy

rain: 0% | wind: 19 km/h

SEPTEMBER 17

17°C / 34°C
clear sky

rain: 0% | wind: 16 km/h

SEPTEMBER 18

18°C / 36°C
overcast

rain: 3% | wind: 32 km/h

SEPTEMBER 19

17°C / 31°C
moderate drizzle

rain: 16% | wind: 13 km/h

SEPTEMBER 20

16°C / 32°C
light drizzle

rain: 26% | wind: 23 km/h

Water Temperature in Lake Sullivan: General Trends and Swimming Opportunities

Lake Sullivan is located in the state of Indiana, in the county of Sullivan, at an elevation of 475 feet (145 meters) above sea level.

Lake Sullivan is a small lake. Its surface area is 0.63 sq mi (1.62 sq km). These are small water bodies often used for recreation, fishing, or irrigation.

The water temperature in Lake Sullivan varies throughout the year, ranging from 32°F (0°C) in January 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 Lake Sullivan exceeds 68 degrees Fahrenheit (20°C) are May, June, July, August and September.

The nearest cities ans towns to Lake Sullivan are: Palestine, Robinson in Illinois and Sullivan, Shelburn, Farmersburg, Jasonville, Linton, Middlebury, Worthington, Bicknell in Indiana.

Geographical Location of Lake Sullivan

Nearby Lakes

Frequently Asked Questions About Lake Sullivan and its Water Temperatures

What is the current water temperature in Lake Sullivan?

The water temperature today in Lake Sullivan is 71°F (21.5°C).

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

The average water temperature in Lake Sullivan during the summer months is typically between 74°F to 83°F (23°C to 28°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 Lake Sullivan in May?

The average water temperature in Lake Sullivan in May ranges from 66°F to 75°F (19°C to 24°C).

What is the water temperature in Lake Sullivan in September?

The average water temperature in Lake Sullivan in September is typically between 79°F to 88°F (26°C to 31°C).

Where is Lake Sullivan located?

Lake Sullivan is located in the United States in the state of Indiana, in the county of Sullivan, at an elevation of 475 feet (145 meters) above sea level. The surface area of the lake is 0.626 sq mi (1.62 sq km).

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

Yes, it is possible to swim in Lake Sullivan, Indiana. However, the accessibility for swimming could vary based on factors like local regulations, seasonal restrictions, and water quality.

What are the coordinates of Lake Sullivan?

Lake Sullivan is located at coordinates 39.1140°N 87.3860°W.

Is Lake Lake Sullivan a popular vacation spot among Americans?

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

What species of fish can be found in Lake Sullivan?

Lake Sullivan is home to fish species such as Largemouth bass (best caught in Spring, Fall), Smallmouth bass (Spring, Fall), Bluegill (Spring, Summer), Northern pike (Spring, Fall), Walleye (Spring, Fall), Yellow perch (Spring, Winter).