Beltrami Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Beltrami Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Beltrami Lake today is 16.6°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 | 18.9°C | 19.0°C | |
| SEP 15 | 18.0°C | 19.0°C | |
| SEP 16 | 17.9°C | 19.0°C | |
| SEP 17 | 17.4°C | 19.0°C | |
| SEP 18 | 16.7°C | 19.0°C | |
| SEP 19 | 16.6°C | 19.0°C | |
| SEP 20 | 16.0°C | 19.0°C | |
| SEP 21 | 16.6°C | 19.0°C | |
| SEP 22 | 19.0°C | 16.7°C | |
| SEP 23 | 19.0°C | 16.8°C | |
| SEP 24 | 19.0°C | 17.0°C | |
| SEP 25 | 19.0°C | 17.1°C | |
| SEP 26 | 19.0°C | 17.2°C | |
| SEP 27 | 19.0°C | 17.3°C | |
| SEP 28 | 19.0°C | 17.4°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 | 1°C | 7°C | 12°C |
| February | 1°C | 8°C | 15°C |
| March | 0°C | 9°C | 17°C |
| April | 2°C | 11°C | 20°C |
| May | 2°C | 12°C | 21°C |
| June | 13°C | 18°C | 22°C |
| July | 17°C | 21°C | 25°C |
| August | 21°C | 25°C | 28°C |
| September | 16°C | 19°C | 22°C |
| October | 5°C | 12°C | 18°C |
| November | 2°C | 7°C | 11°C |
| December | 3°C | 7°C | 11°C |
Beltrami Lake: Water Temperature by Location
Beltrami Lake: Weather Forecast
September 22
September 23
September 24
September 25
Location & Local Information
Beltrami Lake in Minnesota experiences pronounced seasonal shifts in surface water temperature typical of northern lakes. In spring the water usually runs cold as it thaws, roughly 40–60°F (4–16°C). Summer brings the warmest conditions, with surface temperatures commonly between 65–80°F (18–27°C) on warm afternoons; deeper water remains cooler. In autumn the lake cools back toward spring levels, often 40–60°F (4–16°C) before freeze-up. During winter the lake is generally ice-covered and surface temperatures are near freezing, about 32°F (0°C) with the densest water near 39°F (4°C) at depth under the ice.
Swimming is generally allowed at Beltrami Lake where public access or private shoreline permits recreational use, and many people swim during the warmer summer months when surface temperatures are comfortable. However, whether swimming is advisable depends on current conditions: cold spring and fall water can present hypothermia risk, and winter ice cover makes normal swimming unsafe. Local rules, posted advisories about water quality, algal blooms or hazardous conditions, and personal safety precautions such as life jackets should be followed. Seasonal temperature and ice conditions dictate when swimming is both legal and safe.