Ausable River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Ausable River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Ausable River today is 23.8°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 75°F (23°C) to 79°F (26°C). This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health. 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 3 | 22.5°C | 19.0°C | |
| AUG 4 | 22.2°C | 19.0°C | |
| AUG 5 | 22.0°C | 19.0°C | |
| AUG 6 | 22.3°C | 19.0°C | |
| AUG 7 | 22.4°C | 19.0°C | |
| AUG 8 | 22.9°C | 19.0°C | |
| AUG 9 | 23.4°C | 19.0°C | |
| AUG 10 | 23.8°C | 19.0°C | |
| AUG 11 | 19.0°C | 23.6°C | |
| AUG 12 | 19.0°C | 23.3°C | |
| AUG 13 | 19.0°C | 23.1°C | |
| AUG 14 | 19.0°C | 22.8°C | |
| AUG 15 | 19.0°C | 22.6°C | |
| AUG 16 | 19.0°C | 22.4°C | |
| AUG 17 | 19.0°C | 22.1°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 | 3°C | 4°C |
| February | 0°C | 3°C | 4°C |
| March | 0°C | 3°C | 5°C |
| April | 0°C | 5°C | 11°C |
| May | 4°C | 10°C | 17°C |
| June | 7°C | 13°C | 20°C |
| July | 15°C | 20°C | 25°C |
| August | 17°C | 19°C | 24°C |
| September | 11°C | 16°C | 20°C |
| October | 7°C | 12°C | 16°C |
| November | 3°C | 6°C | 11°C |
| December | 0°C | 3°C | 6°C |
Ausable River: Water Temperature by Location
Ausable River: Weather Forecast
August 11
August 12
August 13
August 14
August 15
Location & Local Information
Source Staffa
• location West Perth, Perth County
• coordinates 43°28′26″N 81°18′54″W
• elevation 334 m (1,096 ft)
Mouth Lake Huron
• location Port Franks, Lambton Shores, Lambton County, Ontario
• coordinates 43°18′49″N 81°46′3″W
• elevation 176 m (577 ft)
The Ausable River, located in southwestern Ontario, flows through the Huron County region before emptying into Lake Huron near Grand Bend. Its water temperature changes significantly throughout the year due to Ontario’s temperate climate and the influence of surrounding farmland and forests. In early spring, when snowmelt feeds the river, the water remains cold, averaging around 39–45°F (4–7°C). By late May and June, temperatures rise to about 52–61°F (11–16°C). During midsummer, from July through August, the Ausable River reaches its warmest period, with surface temperatures in slower-moving sections often between 66–73°F (19–23°C). As autumn approaches, the water gradually cools again, falling below 57°F (14°C) by late September.
Swimming in the Ausable River is allowed but generally limited to calm, accessible areas, as much of the river passes through natural channels and conservation zones. The water can be clear and mild in midsummer, making short swims or wading possible on warm days, especially near recreation areas such as the Pinery Provincial Park. However, deeper or faster-moving stretches are better suited for canoeing and kayaking rather than swimming. The best time to enjoy the river for water activities is from late June to early September, when both air and water temperatures are comfortably warm.