Middle Eau Claire Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Middle Eau Claire Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Middle Eau Claire Lake today is 18.4°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 |
|---|---|---|---|
| SEP 14 | 20.1°C | 18.5°C | |
| SEP 15 | 18.4°C | 18.5°C | |
| SEP 16 | 18.5°C | 18.5°C | |
| SEP 17 | 18.5°C | 18.5°C | |
| SEP 18 | 18.4°C | 18.5°C | |
| SEP 19 | 18.3°C | 18.5°C | |
| SEP 20 | 18.2°C | 18.5°C | |
| SEP 22 | 18.5°C | 18.4°C | |
| SEP 23 | 18.5°C | 18.4°C | |
| SEP 24 | 18.5°C | 18.4°C | |
| SEP 25 | 18.5°C | 18.4°C | |
| SEP 26 | 18.5°C | 18.4°C | |
| SEP 27 | 18.5°C | 18.4°C | |
| SEP 28 | 18.5°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 | 0°C | 3°C | 6°C |
| February | 0°C | 3°C | 5°C |
| March | 0°C | 4°C | 7°C |
| April | 1°C | 6°C | 12°C |
| May | 7°C | 13°C | 18°C |
| June | 15°C | 18°C | 22°C |
| July | 20°C | 24°C | 28°C |
| August | 17°C | 24°C | 30°C |
| September | 14°C | 19°C | 23°C |
| October | 9°C | 14°C | 18°C |
| November | 2°C | 10°C | 17°C |
| December | 0°C | 3°C | 6°C |
Middle Eau Claire Lake: Water Temperature by Location
Middle Eau Claire Lake: Weather Forecast
September 22
September 23
September 24
September 25
Location & Local Information
Middle Eau Claire Lake in Wisconsin follows a typical northern inland-lake seasonal pattern for water temperature. In spring (April–May) surface temperatures usually climb from roughly 40–60°F (4–16°C) as ice melts and the lake stratifies. Summer (June–August) is when the surface is warmest, commonly ranging from about 68–80°F (20–27°C), with the warmest afternoons occasionally reaching the low 80s°F (27–28°C). By early fall (September–October) temperatures decline to roughly 50–65°F (10–18°C) as cooling and turnover occur, and in winter the lake surface falls to near freezing, often forming ice at or just above 32°F (0°C) with much colder water below. Deeper water remains substantially colder year-round, so thermoclines and temperature gradients are typical during summer months.
Swimming is generally allowed in Middle Eau Claire Lake where public access or private shoreline permits permit entry, because it is a recreational inland lake used for boating and bathing. Whether swimming is advisable on any given day depends on measured water temperatures, the presence of a designated beach, local health advisories or algal blooms, and safety considerations such as depth, underwater hazards and boat traffic. Cooler spring or fall temperatures increase hypothermia risk even for experienced swimmers, while summer conditions are most comfortable for most people.