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 12.8°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 54°F (12°C) to 60°F (15°C). The water is significantly warmer, and swimming becomes possible for most people. However, caution may still be required for prolonged stays in the water, as extended exposure can cause discomfort. This is a suitable temperature range for short swims and for those accustomed to cooler water. For more comfortable swimming, it is recommended to use proper gear. 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 |
|---|---|---|---|
| SEP 14 | 16.7°C | 15.8°C | |
| SEP 15 | 16.4°C | 15.8°C | |
| SEP 16 | 14.2°C | 15.8°C | |
| SEP 17 | 14.2°C | 15.8°C | |
| SEP 18 | 12.4°C | 15.8°C | |
| SEP 19 | 12.8°C | 15.8°C | |
| SEP 20 | 13.4°C | 15.8°C | |
| SEP 22 | 15.8°C | 13.0°C | |
| SEP 23 | 15.8°C | 13.1°C | |
| SEP 24 | 15.8°C | 13.3°C | |
| SEP 25 | 15.8°C | 13.4°C | |
| SEP 26 | 15.8°C | 13.6°C | |
| SEP 27 | 15.8°C | 13.7°C | |
| SEP 28 | 15.8°C | 13.9°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 | 21°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 22
September 23
September 24
September 25
September 26
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.