Lake Mohawksin — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Mohawksin, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Mohawksin today is 16.7°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 | 18.2°C | 17.7°C | |
| SEP 15 | 17.3°C | 17.7°C | |
| SEP 16 | 17.3°C | 17.7°C | |
| SEP 17 | 17.6°C | 17.7°C | |
| SEP 18 | 17.2°C | 17.7°C | |
| SEP 19 | 17.1°C | 17.7°C | |
| SEP 20 | 17.1°C | 17.7°C | |
| SEP 21 | 16.7°C | 17.7°C | |
| SEP 22 | 17.7°C | 16.8°C | |
| SEP 23 | 17.7°C | 16.8°C | |
| SEP 24 | 17.7°C | 16.9°C | |
| SEP 25 | 17.7°C | 16.9°C | |
| SEP 26 | 17.7°C | 17.0°C | |
| SEP 27 | 17.7°C | 17.0°C | |
| SEP 28 | 17.7°C | 17.1°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 | 2°C | 5°C |
| April | 1°C | 7°C | 14°C |
| May | 6°C | 12°C | 19°C |
| June | 16°C | 19°C | 22°C |
| July | 18°C | 23°C | 28°C |
| August | 18°C | 24°C | 30°C |
| September | 14°C | 18°C | 22°C |
| October | 9°C | 14°C | 18°C |
| November | 2°C | 8°C | 14°C |
| December | 0°C | 2°C | 4°C |
Lake Mohawksin: Water Temperature by Location
Lake Mohawksin: Weather Forecast
September 21
September 22
September 23
September 24
September 25
Location & Local Information
Lake Mohawksin, a reservoir in northern Wisconsin near Tomahawk, experiences a wide range of water temperatures through the year because of its northern climate and seasonal overturn. In spring and early fall surface temperatures commonly range from about 40–60°F (4–15°C) as the lake mixes. During the warmest part of summer surface readings typically climb into the mid‑60s to upper‑70s °F (about 18–26°C), and on hot, calm days localized surface areas can reach the low 80s °F (around 27–28°C). In winter the lake generally freezes and water at or just below the ice stays close to 32–39°F (0–4°C); deeper water remains a few degrees warmer but substantially colder than summer levels.
Swimming in Lake Mohawksin is generally allowed in open water during the warmer months, particularly at public access points and designated swimming areas maintained by local authorities. Municipal beaches or parks may open seasonally when water quality and weather conditions are suitable; however, swimmers should heed posted advisories, algae or bacterial warnings, and boating patterns. Cold water outside the summer season and ice cover in winter make swimming unsafe due to hypothermia and drowning risk, so recreational swimming is effectively seasonal and conditional on local management, water clarity, and safety notices.