Brule Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Brule Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Brule Lake today is 15.3°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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.
Water Temperature Chart Over the Last 30 Days
Table of Daily Sea Temperature Data
| Date | Current | Average | Forecast |
|---|---|---|---|
| SEP 14 | 18.1°C | 17.7°C | |
| SEP 15 | 17.7°C | 17.7°C | |
| SEP 16 | 17.3°C | 17.7°C | |
| SEP 17 | 16.6°C | 17.7°C | |
| SEP 18 | 16.4°C | 17.7°C | |
| SEP 19 | 16.8°C | 17.7°C | |
| SEP 20 | 15.6°C | 17.7°C | |
| SEP 21 | 15.3°C | 17.7°C | |
| SEP 22 | 17.7°C | 15.4°C | |
| SEP 23 | 17.7°C | 15.5°C | |
| SEP 24 | 17.7°C | 15.7°C | |
| SEP 25 | 17.7°C | 15.8°C | |
| SEP 26 | 17.7°C | 15.9°C | |
| SEP 27 | 17.7°C | 16.0°C | |
| SEP 28 | 17.7°C | 16.1°C |
* Current - Actual water temperature value
** Average - Average water temperature on this day in recent years
*** Forecast - Our water temperature forecast
Actual nearshore water temperatures may fluctuate by several degrees from the reported values, especially following heavy rainfall or extended periods of strong winds. Certain wind patterns can cause colder, deeper waters to rise and replace the sun-warmed surface water, leading to noticeable variations.
Our forecast is based on a proprietary mathematical model that considers real-time water temperature changes, historical trends, key weather patterns, wind strength and direction, and air temperature specific to each region. Additionally, we incorporate data from other resorts to enhance accuracy.
Monthly Water Temperature Range (Min, Max & Average)
| Month | Min | Avg | Max |
|---|---|---|---|
| January | 0°C | 1°C | 3°C |
| February | 0°C | 2°C | 4°C |
| March | 0°C | 1°C | 3°C |
| April | 1°C | 5°C | 9°C |
| May | 3°C | 10°C | 16°C |
| June | 10°C | 16°C | 21°C |
| July | 17°C | 22°C | 27°C |
| August | 16°C | 23°C | 30°C |
| September | 14°C | 18°C | 22°C |
| October | 9°C | 13°C | 16°C |
| November | 2°C | 7°C | 11°C |
| December | 0°C | 3°C | 6°C |
Brule Lake: Water Temperature by Location
Brule Lake: Weather Forecast
September 22
September 23
September 24
September 25
September 26
Location & Local Information
Brule Lake in northeastern Minnesota tends to run cooler than many more southerly or shallow lakes. Typical seasonal surface temperatures start low after ice-out in spring, roughly 36–55°F (2–13°C). By early to mid-summer the surface commonly warms to about 60–75°F (16–24°C) on warm afternoons, though deep water and shaded bays often remain several degrees cooler. In fall the lake cools back into the 40–60°F (4–16°C) range as air temperatures drop, and in winter the lake sits at or near freezing (around 32°F/0°C) under ice cover until thaw. These are typical ranges for northern Minnesota lakes and can vary year to year with weather, depth, and wind mixing.
Swimming in Brule Lake is generally allowed because it is a public freshwater lake, but availability depends on access, local rules, and seasonal conditions. Many people swim there in summer when surface temperatures are in the 60s–70s°F (16–24°C), but the water can feel brisk compared with warmer recreational lakes. Swimmers should watch for cold-water shock and hypothermia risk, especially in early/late season or when entering deep or shaded areas. There are often no lifeguards at remote lake access points, so personal safety precautions and checking local advisories before swimming are recommended.