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 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 |
|---|---|---|---|
| JUN 3 | 16.6°C | 12.7°C | |
| JUN 4 | 16.8°C | 12.7°C | |
| JUN 5 | 16.9°C | 12.7°C | |
| JUN 6 | 17.0°C | 12.7°C | |
| JUN 7 | 17.2°C | 12.7°C | |
| JUN 8 | 18.3°C | 12.7°C | |
| JUN 10 | 18.6°C | 12.7°C | |
| JUN 11 | 12.7°C | 18.5°C | |
| JUN 12 | 12.7°C | 18.2°C | |
| JUN 13 | 12.7°C | 17.9°C | |
| JUN 14 | 12.7°C | 17.6°C | |
| JUN 15 | 12.7°C | 17.3°C | |
| JUN 16 | 12.7°C | 17.0°C | |
| JUN 17 | 12.7°C | 16.7°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 | 19°C |
| July | 15°C | 18°C | 23°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
June 9
June 10
June 11
June 12
June 13
June 14
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.