Lake Eau Galle — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Eau Galle, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Eau Galle today is 18.8°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 | 18.8°C | |
| SEP 15 | 19.6°C | 18.8°C | |
| SEP 16 | 19.6°C | 18.8°C | |
| SEP 17 | 19.4°C | 18.8°C | |
| SEP 18 | 18.7°C | 18.8°C | |
| SEP 19 | 19.1°C | 18.8°C | |
| SEP 20 | 19.3°C | 18.8°C | |
| SEP 22 | 18.8°C | 18.8°C | |
| SEP 23 | 18.8°C | 18.8°C | |
| SEP 24 | 18.8°C | 18.8°C | |
| SEP 25 | 18.8°C | 18.8°C | |
| SEP 26 | 18.8°C | 18.8°C | |
| SEP 27 | 18.8°C | 18.8°C | |
| SEP 28 | 18.8°C | 18.8°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 | 1°C | 3°C |
| March | 0°C | 2°C | 5°C |
| April | 1°C | 8°C | 15°C |
| May | 9°C | 15°C | 22°C |
| June | 16°C | 20°C | 24°C |
| July | 21°C | 24°C | 28°C |
| August | 19°C | 25°C | 30°C |
| September | 14°C | 19°C | 24°C |
| October | 9°C | 14°C | 19°C |
| November | 4°C | 8°C | 11°C |
| December | 0°C | 2°C | 5°C |
Lake Eau Galle: Water Temperature by Location
Lake Eau Galle: Weather Forecast
September 22
September 23
September 24
September 25
Location & Local Information
Lake Eau Galle, a reservoir in western Wisconsin, follows the seasonal temperature patterns typical of inland lakes in the region. In spring (April–May) surface waters commonly range from about 40–60°F (4–16°C) as the lake recovers from winter cooling. Summer (June–August) brings the warmest surface readings, frequently between 68–78°F (20–26°C) and occasionally reaching the mid-70s to upper 70s°F (24–26°C) during heat spells. By fall (September–October) surface temperatures drop back into the 50s–60s°F (10–18°C) as cooling progresses. In winter the surface approaches freezing, about 32–36°F (0–2°C), and ice cover is normal, making open-water swimming uncommon. Like most lakes, Eau Galle stratifies in summer so deeper water can remain much colder (often 40–50°F / 4–10°C) below the thermocline.
Swimming at Lake Eau Galle is generally possible from shorelines, public access points and during recreation season where permitted, but conditions vary and local rules apply. There are typically no lifeguards at remote reservoir sites, and water quality or algal bloom advisories after heavy rains can temporarily restrict swimming. Because of temperature changes with depth and the possibility of sudden cold pockets, swimmers should exercise caution, enter gradually, and check current local guidance on access, safety, and water quality before swimming.