Assiniboine River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Assiniboine River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Assiniboine River today is 20.8°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 | 19.9°C | 20.8°C | |
| AUG 25 | 19.9°C | 20.8°C | |
| AUG 26 | 20.3°C | 20.8°C | |
| AUG 27 | 20.0°C | 20.8°C | |
| AUG 28 | 20.5°C | 20.8°C | |
| AUG 29 | 20.4°C | 20.8°C | |
| AUG 30 | 20.5°C | 20.8°C | |
| AUG 31 | 20.7°C | 20.8°C | |
| SEP 1 | 16.0°C | 20.6°C | |
| SEP 2 | 16.0°C | 20.3°C | |
| SEP 3 | 16.0°C | 20.1°C | |
| SEP 4 | 16.0°C | 19.8°C | |
| SEP 5 | 16.0°C | 19.6°C | |
| SEP 6 | 16.0°C | 19.4°C | |
| SEP 7 | 16.0°C | 19.1°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 | 19°C |
| July | 15°C | 20°C | 26°C |
| August | 17°C | 21°C | 25°C |
| September | 11°C | 16°C | 20°C |
| October | 7°C | 12°C | 16°C |
| November | 2°C | 7°C | 11°C |
| December | 0°C | 3°C | 6°C |
Assiniboine River: Water Temperature by Location
Assiniboine River: Weather Forecast
September 1
September 2
September 3
September 4
September 5
September 6
Location & Local Information
Source Windy Lake east of Kelvington
• location Saskatchewan
• coordinates 52°18′15″N 103°06′01″W
• elevation 640 m (2,100 ft)
Mouth Red River of the North
• location The Forks in Winnipeg, Manitoba
• coordinates 49°53′09″N 97°07′41″W
• elevation 230 m (750 ft)
Length 1,070 km (660 mi)
The Assiniboine River, flowing through western and southern Manitoba before joining the Red River in Winnipeg, is an important prairie waterway shaped by a continental climate and seasonal runoff. In early spring, as snow and ice begin to melt, the river’s temperature remains cold, averaging around 37–43°F (3–6°C). By late May and June, it warms gradually to about 50–59°F (10–15°C) as air temperatures rise and water levels stabilize. During midsummer, from July through August, surface temperatures in calmer, shallow stretches can reach 64–70°F (18–21°C), while deeper or faster-moving areas remain cooler. In early autumn, as nights become colder and rainfall increases, the water temperature drops again below 55°F (13°C) by late September.
Swimming in the Assiniboine River is technically allowed, but it is generally not advised because of strong currents, uneven depths, and variable water quality, especially near urban areas. The water can feel pleasant for short dips in midsummer, particularly in rural or shallow sections, but swimmers must exercise caution. Most residents and visitors prefer to enjoy the river from its banks or engage in activities such as canoeing, kayaking, and fishing. The Assiniboine is best appreciated for its scenic and recreational value rather than as a regular swimming destination.