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 18.1°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. 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 |
|---|---|---|---|
| JUN 3 | 10.7°C | 15.9°C | |
| JUN 4 | 10.7°C | 15.9°C | |
| JUN 5 | 10.7°C | 15.9°C | |
| JUN 6 | 11.2°C | 15.9°C | |
| JUN 7 | 11.7°C | 15.9°C | |
| JUN 8 | 17.9°C | 15.9°C | |
| JUN 11 | 15.9°C | 18.0°C | |
| JUN 12 | 15.9°C | 17.9°C | |
| JUN 13 | 15.9°C | 17.8°C | |
| JUN 14 | 15.9°C | 17.7°C | |
| JUN 15 | 15.9°C | 17.6°C | |
| JUN 16 | 15.9°C | 17.4°C | |
| JUN 17 | 15.9°C | 17.3°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 | 18°C | 23°C | 27°C |
| August | 16°C | 23°C | 30°C |
| September | 14°C | 16°C | 19°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
June 9
June 10
June 11
June 12
June 13
June 14
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.