Two Jack Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Two Jack Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Two Jack Lake today is 15.7°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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 25 | 12.7°C | 17.9°C | |
| AUG 26 | 12.0°C | 17.9°C | |
| AUG 27 | 15.6°C | 17.9°C | |
| AUG 28 | 15.6°C | 17.9°C | |
| AUG 29 | 15.8°C | 17.9°C | |
| AUG 30 | 15.8°C | 17.9°C | |
| AUG 31 | 15.7°C | 17.9°C | |
| SEP 2 | 16.0°C | 15.7°C | |
| SEP 3 | 16.0°C | 15.7°C | |
| SEP 4 | 16.0°C | 15.7°C | |
| SEP 5 | 16.0°C | 15.8°C | |
| SEP 6 | 16.0°C | 15.8°C | |
| SEP 7 | 16.0°C | 15.8°C | |
| SEP 8 | 16.0°C | 15.8°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 | 10°C | 17°C | 23°C |
| August | 11°C | 18°C | 24°C |
| September | 11°C | 16°C | 20°C |
| October | 7°C | 12°C | 16°C |
| November | 0°C | 6°C | 11°C |
| December | 0°C | 3°C | 6°C |
Two Jack Lake: Water Temperature by Location
Two Jack Lake: Weather Forecast
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Location & Local Information
Two Jack Lake, located just a few kilometers from Banff in Alberta’s Rocky Mountains, is a small, scenic glacial-fed lake surrounded by rugged peaks and evergreen forest. Due to its high elevation and proximity to cold mountain streams, the lake remains cold throughout the year. In early spring, when the ice melts, the surface temperature averages around 37–41°F (3–5°C). By late May and June, it warms slightly to about 46–54°F (8–12°C). During midsummer, from July through August, the shallow shoreline areas can reach 57–63°F (14–17°C) on sunny days, though deeper parts remain much colder. In early autumn, as cooler weather returns, the temperature drops again to below 52°F (11°C) by late September.
Swimming in Two Jack Lake is allowed, though it is generally considered a cold-water experience. The lake’s clear, turquoise water and picturesque setting attract many visitors, but most people take only short dips rather than extended swims due to the low temperature. Even in midsummer, the water can feel icy, and swimmers may experience rapid cooling. The best time to swim is during warm, calm days in July or August, when surface temperatures are at their peak. Despite the chilly water, Two Jack Lake remains a popular spot for paddling, photography, and enjoying Banff’s mountain scenery.