These Are Now the Warmest Popular Lakes in Minnesota

We all know Minnesota is famous for its 10,000 lakes, but have you ever wondered which ones are the warmest to swim in during the summer months?

There's no doubt many Minnesota lakes warm to comfortable swimming temps in the summer, but when that happens depends on a few things like the size of the lake, weather conditions, and location within the state.

Generally, July is when most Minnesota lakes reach comfortable swimming temperatures. In June, the water is often still quite chilly and can even be dangerous.

Always check the exact water temperature before taking the plunge, as it takes just 10-15 minutes to lose dexterity in 50- to 60-degree water.

Get our free mobile app

What is the Ideal Water Temperature For Swimming?

When it comes to swimming in Minnesota lakes, the DNR says the ideal water temperature is at least 70.

The 70- to 77-degree range provides a safe, refreshing yet comfortable swim, perfect for enjoying those long summer days without feeling too chilly or too warm.

Which Popular Minnesota Lakes Are The Warmest For Summer Swimming?

Pack your swimsuit and sunscreen, and let’s dive right into the welcoming waters of some of the warmest lakes in Minnesota.

Overall, lake water temperatures in Minnesota are still pretty chilly in June but begin to warm up quickly in July. Below are several popular lakes across Minnesota with the warmest average water temperatures in June, July, and August, according to data from SeaTemperature.info.

Red Lake

Red Lake is the largest natural freshwater lake located entirely within Minnesota. The lake consists of two sections, Upper Red Lake and Lower Red Lake.

Avg Temp:
June: 64.4°F | July: 72.3°F | August: 71.4°F

Min Temp:
June: 54°F | July: 64.9°F | August: 65.1°F

Max Temp:
June: 73.8°F | July: 78.3°F | August: 77.2°F

Current water temp of Red Lake:

Lake of the Woods

The Lake of the Woods is located in the northernmost part of the state and is the body of water that separates the Northwest Angle of Minnesota from the rest of the state.

Avg Temp:
June: 64.4°F | July: 70.1°F | August: 70.6

Min Temp:
June: 50.0°F | July: 63.0°F | August: 64.0°F

Max Temp:
June: 73.4°F | July: 77.7°F | August: 75.9°F

Current water temp around the Lake of the Woods:

Kabetogamma Lake

Kabetogama Lake is in northern St. Louis County and lies within Voyageurs National Park.

Avg Temp:
June: 67.3°F | July: 70.5°F | August: 71.4°F

Min Temp:
June: 49.8°F | July: 59.0°F | August: 66.6°F

Max Temp:
June: 71.6°F | July: 76.8°F | August: 76.8°F

Current water temp of Kabetogama Lake:

Mille Lacs Lake

Located in Central Minnesota, Mille Lacs Lake is Minnesota's second-largest inland lake.

Avg Temp:
June: 64.0°F | July: 72.9°F  | August: 72.3°F

Min Temp:
June: 53.8°F | July: 64.8°F | August: 66.7°F

Max Temp:
June: 73.4°F | July: 78.8°F | August: 75.9°F

Current water temp of Millie Lacs Lake:

LOOK: Minnesota’s 10 Highest-Rated and Stunning State Parks You Must Visit