Bow River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Bow River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Bow River today is 12.7°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 |
|---|---|---|---|
| JUN 23 | 11.1°C | 13.5°C | |
| JUN 24 | 11.8°C | 13.5°C | |
| JUN 25 | 11.7°C | 13.5°C | |
| JUN 26 | 11.9°C | 13.5°C | |
| JUN 27 | 12.1°C | 13.5°C | |
| JUN 28 | 12.3°C | 13.5°C | |
| JUN 29 | 12.3°C | 13.5°C | |
| JUN 30 | 12.7°C | 13.5°C | |
| JUL 1 | 18.0°C | 13.0°C | |
| JUL 2 | 18.0°C | 13.2°C | |
| JUL 3 | 18.0°C | 13.5°C | |
| JUL 4 | 18.0°C | 13.8°C | |
| JUL 5 | 18.0°C | 14.0°C | |
| JUL 6 | 18.0°C | 14.3°C | |
| JUL 7 | 18.0°C | 14.6°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 | 18°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 | 1°C | 6°C | 11°C |
| December | 0°C | 3°C | 6°C |
Bow River: Water Temperature by Location
Bow River: Weather Forecast
July 1
July 2
July 3
July 4
Location & Local Information
Source Bow Lake
• coordinates 51°39′03″N 116°25′12″W
• elevation 1,960 m (6,430 ft)
Mouth South Saskatchewan River
• coordinates 49°55′42″N 111°41′12″W
• elevation 700 m (2,300 ft)
Length 587 km (365 mi)
The Bow River, flowing from the glaciers of Banff National Park through Calgary and into southern Alberta, is one of the province’s most iconic waterways. Because it originates in the Rocky Mountains, its water temperature stays cool even during the summer months. In early spring, after the ice and snow begin to melt, the river’s surface temperature averages around 37–41°F (3–5°C). By late May and June, it warms modestly to about 46–54°F (8–12°C). During midsummer, particularly in July and August, surface temperatures in slower-moving or shallow stretches near Calgary can reach 59–64°F (15–18°C), while the upper sections near Banff remain much colder. By September, as autumn cools the air, the river drops below 55°F (13°C) once again.
Swimming in the Bow River is allowed but generally not recommended due to the cold water, strong current, and changing flow conditions. Even on warm summer days, the river’s temperature can cause discomfort or hypothermia with prolonged exposure. Most people enjoy the Bow through activities such as rafting, kayaking, or fishing, which allow them to experience the river safely. In calmer sections, short dips or wading may be possible, but caution is essential. The Bow River’s beauty and clarity make it ideal for scenic recreation rather than extended swimming.