Turtle Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Turtle Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Turtle Lake today is 17.3°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 | 17.7°C | 19.5°C | |
| SEP 15 | 17.5°C | 19.5°C | |
| SEP 16 | 17.3°C | 19.5°C | |
| SEP 17 | 17.4°C | 19.5°C | |
| SEP 18 | 17.7°C | 19.5°C | |
| SEP 19 | 17.5°C | 19.5°C | |
| SEP 20 | 16.8°C | 19.5°C | |
| SEP 21 | 17.3°C | 19.5°C | |
| SEP 22 | 19.5°C | 17.4°C | |
| SEP 23 | 19.5°C | 17.5°C | |
| SEP 24 | 19.5°C | 17.6°C | |
| SEP 25 | 19.5°C | 17.7°C | |
| SEP 26 | 19.5°C | 17.9°C | |
| SEP 27 | 19.5°C | 18.0°C | |
| SEP 28 | 19.5°C | 18.1°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 | 4°C |
| February | 0°C | 2°C | 4°C |
| March | 0°C | 2°C | 4°C |
| April | 1°C | 6°C | 10°C |
| May | 4°C | 12°C | 19°C |
| June | 14°C | 21°C | 27°C |
| July | 20°C | 24°C | 27°C |
| August | 21°C | 25°C | 28°C |
| September | 16°C | 20°C | 23°C |
| October | 6°C | 12°C | 17°C |
| November | 3°C | 7°C | 11°C |
| December | 0°C | 3°C | 6°C |
Turtle Lake: Water Temperature by Location
Turtle Lake: Weather Forecast
September 22
September 23
September 24
September 25
Location & Local Information
Turtle Lake in Minnesota typically follows the seasonal temperature patterns common to small inland lakes in the region. Surface water in spring is often brisk, roughly 40–60°F (4–15°C) as the lake stratifies and warms; by summer, surface temperatures commonly reach 65–78°F (18–26°C), with warm afternoons or heat waves pushing parts of the surface toward the low 80s°F (27–28°C) in shallow bays. In fall the surface cools back to roughly 50–65°F (10–18°C) as turnover begins, and in winter the lake usually freezes over with surface temperatures near 32°F (0°C) under ice. Deeper layers remain colder year-round and respond more slowly to air temperatures; wind, lake depth, shading, and inflow/outflow also influence local readings.
Swimming is generally possible at Turtle Lake during the warmer months when surface temperatures are comfortable for bathing, and public access points or beaches (if provided) are commonly used for recreation. However, whether swimming is advisable depends on current conditions: water quality advisories for algal blooms, strong winds, low visibility, or local restrictions can make swimming unsafe, and ice swimming is dangerous without proper precautions and training. Visitors should check local guidance, observe posted signs, and use standard safety practices such as swimming with a companion and wearing a life jacket where appropriate.