Lake Saint Clair — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Saint Clair, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Saint Clair 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 |
|---|---|---|---|
| JUN 3 | 18.6°C | 18.0°C | |
| JUN 4 | 18.6°C | 18.0°C | |
| JUN 5 | 19.1°C | 18.0°C | |
| JUN 6 | 19.7°C | 18.0°C | |
| JUN 7 | 20.4°C | 18.0°C | |
| JUN 8 | 20.7°C | 18.0°C | |
| JUN 10 | 21.4°C | 18.0°C | |
| JUN 11 | 18.0°C | 21.2°C | |
| JUN 12 | 18.0°C | 21.1°C | |
| JUN 13 | 18.0°C | 20.9°C | |
| JUN 14 | 18.0°C | 20.7°C | |
| JUN 15 | 18.0°C | 20.6°C | |
| JUN 16 | 18.0°C | 20.4°C | |
| JUN 17 | 18.0°C | 20.2°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 | 4°C | 7°C |
| February | -2°C | 1°C | 4°C |
| March | -2°C | 3°C | 9°C |
| April | 0°C | 8°C | 16°C |
| May | 9°C | 14°C | 20°C |
| June | 14°C | 18°C | 22°C |
| July | 18°C | 22°C | 26°C |
| August | 20°C | 23°C | 26°C |
| September | 17°C | 22°C | 26°C |
| October | 10°C | 15°C | 20°C |
| November | 4°C | 9°C | 14°C |
| December | 1°C | 5°C | 8°C |
Lake Saint Clair: Water Temperature by Location
Lake Saint Clair: Weather Forecast
June 9
June 10
June 11
June 12
June 13
June 14
Location & Local Information
Max. length 26 mi (42 km)
Max. width 24 mi (39 km)
Surface area 430 sq mi (1,114 km2)
Average depth 11 ft (3.4 m)
Max. depth 27 ft (8.2 m)
Lake St. Clair, nestled between Michigan and Ontario, is a vital part of the Great Lakes system, connecting Lake Huron to Lake Erie via the St. Clair River and Detroit River. Though smaller in size compared to the nearby Great Lakes, it offers abundant opportunities for swimming, boating, and other water activities. Its relatively shallow depth makes it a favorite spot for recreational use, especially during the warmer months.
The water temperature in Lake St. Clair rises significantly in summer, often reaching a comfortable 70°F to 80°F (21°C to 27°C) by mid-July and August, especially in shallow bays and near beaches. These warm conditions make it an inviting location for swimming and water sports. Spring and early summer can be cooler, with temperatures gradually increasing as the season progresses. Thanks to its shallowness, the lake warms up faster than deeper bodies of water, making it accessible for swimming earlier in the year.
Several public beaches, such as those at Metro Beach or along the Canadian shoreline, provide safe and enjoyable swimming areas with amenities like picnic spots and playgrounds. While generally calm, swimmers should be mindful of occasional water quality advisories, particularly after heavy rains, as runoff can temporarily affect conditions. Lake St. Clair’s combination of warm waters and recreational facilities ensures it remains a popular destination for families and water enthusiasts alike.