Loch Lomond Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Loch Lomond Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Loch Lomond Lake today is 21.4°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 68°F (20°C) to 74°F (23°C). The water is warm and pleasant for swimming, and in this range, one can stay in the water for extended periods without the risk of hypothermia. This is the ideal temperature for relaxation, swimming, and water sports. Families with children, as well as outdoor enthusiasts, will enjoy swimming and time spent in the water. For most people, this is the optimal temperature for a comfortable beach experience. 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 |
|---|---|---|---|
| AUG 24 | 21.6°C | 22.5°C | |
| AUG 25 | 21.4°C | 22.5°C | |
| AUG 26 | 21.4°C | 22.5°C | |
| AUG 27 | 21.3°C | 22.5°C | |
| AUG 28 | 21.2°C | 22.5°C | |
| AUG 29 | 21.0°C | 22.5°C | |
| AUG 30 | 21.0°C | 22.5°C | |
| AUG 31 | 20.9°C | 22.5°C | |
| SEP 1 | 16.1°C | 21.1°C | |
| SEP 2 | 16.1°C | 20.9°C | |
| SEP 3 | 16.1°C | 20.6°C | |
| SEP 4 | 16.1°C | 20.3°C | |
| SEP 5 | 16.1°C | 20.1°C | |
| SEP 6 | 16.1°C | 19.8°C | |
| SEP 7 | 16.1°C | 19.5°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 | 1°C | 3°C |
| April | 1°C | 4°C | 6°C |
| May | 1°C | 9°C | 16°C |
| June | 8°C | 15°C | 21°C |
| July | 15°C | 21°C | 27°C |
| August | 15°C | 23°C | 30°C |
| September | 14°C | 16°C | 19°C |
| October | 9°C | 13°C | 16°C |
| November | 2°C | 7°C | 10°C |
| December | 0°C | 2°C | 4°C |
Loch Lomond Lake: Water Temperature by Location
Loch Lomond Lake: Weather Forecast
September 1
September 2
September 3
September 4
September 5
Location & Local Information
Loch Lomond in Michigan is a modest inland lake whose water temperatures follow the typical seasonal pattern for midwestern lakes. In winter the surface usually approaches freezing, around 32°F (0°C) and often stays just above or below that where ice forms. Spring sees a slow rise, with waters commonly between about 40–60°F (4–15°C) as runoff and cool air keep temperatures low. By summer the surface typically warms to roughly 68–78°F (20–26°C), and on warm sunny stretches can reach the mid-70s to low 80s°F (24–28°C) in shallow bays. In autumn the lake cools again into the 50s–60s°F (10–16°C) before returning to winter freeze.
Swimming at Loch Lomond is commonly permitted in areas with public access or on private shorelines where owners allow it, though local rules and posted signs govern specific sites. Water quality, presence of aquatic vegetation, and ice or cold-water hazards influence whether swimming is advisable; colder shoulder-season temperatures present risks like cold shock and reduced endurance. Visitors should check local advisories, respect private property, wear life jackets when appropriate, and avoid swimming alone. Lifeguards are generally not provided, so exercising caution and confirming current conditions before entering the water is recommended.