Lake Alexander — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Alexander, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Alexander today is 17.6°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 | 20.3°C | 19.8°C | |
| SEP 15 | 20.0°C | 19.8°C | |
| SEP 16 | 19.0°C | 19.8°C | |
| SEP 17 | 19.0°C | 19.8°C | |
| SEP 18 | 17.6°C | 19.8°C | |
| SEP 19 | 17.9°C | 19.8°C | |
| SEP 20 | 17.8°C | 19.8°C | |
| SEP 21 | 17.6°C | 19.8°C | |
| SEP 22 | 19.8°C | 17.7°C | |
| SEP 23 | 19.8°C | 17.8°C | |
| SEP 24 | 19.8°C | 17.9°C | |
| SEP 25 | 19.8°C | 18.0°C | |
| SEP 26 | 19.8°C | 18.2°C | |
| SEP 27 | 19.8°C | 18.3°C | |
| SEP 28 | 19.8°C | 18.4°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 | 2°C | 9°C | 15°C |
| March | 1°C | 9°C | 17°C |
| April | 1°C | 11°C | 20°C |
| May | 5°C | 14°C | 22°C |
| June | 12°C | 17°C | 23°C |
| July | 17°C | 22°C | 27°C |
| August | 20°C | 24°C | 28°C |
| September | 15°C | 20°C | 25°C |
| October | 5°C | 12°C | 18°C |
| November | 3°C | 7°C | 10°C |
| December | 2°C | 7°C | 11°C |
Lake Alexander: Water Temperature by Location
Lake Alexander: Weather Forecast
September 22
September 23
September 24
September 25
Location & Local Information
Lake Alexander in central Minnesota follows the seasonal temperature pattern typical of shallow-to-moderate depth lakes in the region. During summer months surface temperatures commonly range from about 68–79°F (20–26°C), and on hot, calm days can approach the low 80s°F (around 27–28°C). In spring the water is much cooler, often in the 40s–50s°F (4–15°C) as snowmelt and runoff cool the lake, while fall surface temperatures usually fall back into the 50s–60s°F (10–18°C). By winter the lake is typically ice-covered and surface water sits at or just above freezing (around 32°F / 0°C); deeper waters remain cold and stratification can occur during summer so sub-surface temperatures are often lower than surface readings.
Swimming is generally permitted on Lake Alexander when open water conditions exist and local access points or beaches are available, but activities depend on seasonal conditions and water-quality advisories. In summer, public and private swimming are common because surface temperatures are comfortable, yet swimmers should heed warnings about algal blooms, bacterial contamination, or unsafe conditions issued by local authorities. In spring and fall the colder water increases the risk of cold shock and hypothermia, and in winter the ice must be assessed for thickness before any activity—official restrictions or advisories should be checked before entering the water.