Minnitaki Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Minnitaki Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Minnitaki Lake today is 19.5°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 |
|---|---|---|---|
| AUG 24 | 19.7°C | 19.0°C | |
| AUG 25 | 19.5°C | 19.0°C | |
| AUG 26 | 19.5°C | 19.0°C | |
| AUG 27 | 19.5°C | 19.0°C | |
| AUG 28 | 19.5°C | 19.0°C | |
| AUG 29 | 19.5°C | 19.0°C | |
| AUG 30 | 19.5°C | 19.0°C | |
| AUG 31 | 19.5°C | 19.0°C | |
| SEP 1 | 16.0°C | 19.3°C | |
| SEP 2 | 16.0°C | 19.2°C | |
| SEP 3 | 16.0°C | 19.0°C | |
| SEP 4 | 16.0°C | 18.8°C | |
| SEP 5 | 16.0°C | 18.6°C | |
| SEP 6 | 16.0°C | 18.5°C | |
| SEP 7 | 16.0°C | 18.3°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 | 8°C | 15°C |
| June | 7°C | 14°C | 21°C |
| July | 15°C | 21°C | 26°C |
| August | 17°C | 19°C | 24°C |
| September | 11°C | 16°C | 20°C |
| October | 7°C | 12°C | 16°C |
| November | 1°C | 6°C | 11°C |
| December | 0°C | 3°C | 6°C |
Minnitaki Lake: Water Temperature by Location
Minnitaki Lake: Weather Forecast
September 1
September 2
September 3
September 4
September 5
September 6
Location & Local Information
Minnitaki Lake, located near Sioux Lookout in northwestern Ontario, is a large and deep freshwater lake that experiences notable seasonal temperature variation due to its northern location and substantial size. In winter, the lake typically freezes over, with surface temperatures close to 0 °C (32 °F) and thick ice cover lasting for several months. During spring, as the ice melts, the water remains cold, generally between 4–8 °C (39–46 °F). By mid to late summer, the upper layers of the lake warm up, reaching about 17–22 °C (63–72 °F) near the shore, while deeper areas stay significantly cooler, often under 10 °C (50 °F). In autumn, cooling air temperatures quickly lower the water to around 8–13 °C (46–55 °F), signaling the end of the short warm season.
Swimming in Minnitaki Lake is possible during the summer months, typically from late June to early September, when the surface water becomes comfortable enough for recreational use. The water is clean and clear, making it inviting for swimming and other activities such as kayaking or paddleboarding. However, swimmers should be aware that sudden temperature differences and wind-driven waves can occur, especially in deeper sections. Outside the summer period, the lake’s cold temperatures and variable weather make swimming unsuitable and potentially dangerous.