Great Central Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Great Central Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Great Central 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 | 20.5°C | 19.0°C | |
| AUG 25 | 20.5°C | 19.0°C | |
| AUG 26 | 20.6°C | 19.0°C | |
| AUG 27 | 20.7°C | 19.0°C | |
| AUG 28 | 20.7°C | 19.0°C | |
| AUG 29 | 19.2°C | 19.0°C | |
| AUG 30 | 19.0°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 | 7°C |
| February | 0°C | 3°C | 7°C |
| March | 0°C | 4°C | 8°C |
| April | 0°C | 6°C | 12°C |
| May | 4°C | 10°C | 17°C |
| June | 7°C | 14°C | 18°C |
| July | 14°C | 19°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 | 3°C | 6°C | 11°C |
| December | 0°C | 4°C | 8°C |
Great Central Lake: Water Temperature by Location
Great Central Lake: Weather Forecast
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September 3
September 4
September 5
September 6
Location & Local Information
Great Central Lake on Vancouver Island, British Columbia, is an incredibly deep and long reservoir, reaching a maximum depth of 250 meters (820 feet). This depth contributes to generally cold water, though the surface warms up seasonally. In the peak summer months, particularly in August, the surface water temperature can reach a pleasant range for swimming, often peaking around 24∘C (75∘F), with average highs around 26∘C (78.8∘F). However, the winter brings considerable cooling, with temperatures dropping to the single digits Celsius, often reaching 4∘C to 10∘C (39∘F to 50∘F).
Swimming is widely permitted and popular at Great Central Lake, with several sources noting it offers a pleasant swimming experience, particularly in the warmer, shallow coves near the east end. The lake is used extensively for recreational pursuits including water skiing and boating, which confirms swimming is a common activity. However, there are no official lifeguarded beaches, and the vast majority of the shoreline is rugged and steep. Therefore, swimming is strictly at one's own risk, and caution is advised, especially due to the sudden, deep drop-offs typical of deep, glaciated lakes and the presence of motorboat traffic.