Lake Memphremagog — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Memphremagog, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Memphremagog today is 21.7°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 | 20.9°C | 21.1°C | |
| AUG 25 | 20.8°C | 21.1°C | |
| AUG 26 | 20.8°C | 21.1°C | |
| AUG 27 | 20.7°C | 21.1°C | |
| AUG 28 | 20.4°C | 21.1°C | |
| AUG 29 | 20.0°C | 21.1°C | |
| AUG 30 | 20.0°C | 21.1°C | |
| AUG 31 | 20.1°C | 21.1°C | |
| SEP 1 | 20.5°C | 21.6°C | |
| SEP 2 | 20.5°C | 21.6°C | |
| SEP 3 | 20.5°C | 21.5°C | |
| SEP 4 | 20.5°C | 21.5°C | |
| SEP 5 | 20.5°C | 21.4°C | |
| SEP 6 | 20.5°C | 21.3°C | |
| SEP 7 | 20.5°C | 21.3°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 | 5°C |
| February | 0°C | 2°C | 5°C |
| March | 0°C | 2°C | 4°C |
| April | 0°C | 4°C | 8°C |
| May | 3°C | 9°C | 14°C |
| June | 10°C | 15°C | 21°C |
| July | 16°C | 22°C | 27°C |
| August | 19°C | 21°C | 24°C |
| September | 16°C | 21°C | 25°C |
| October | 8°C | 12°C | 16°C |
| November | 2°C | 6°C | 10°C |
| December | 1°C | 4°C | 6°C |
Lake Memphremagog: Water Temperature by Location
Lake Memphremagog: Weather Forecast
September 1
September 2
September 3
September 4
September 5
September 6
Location & Local Information
Lake Memphremagog’s surface water temperatures vary substantially through the year because it is a large, relatively deep freshwater lake. In spring the lake is cool as it mixes and warms, typically ranging from about 40–60°F (4–15°C) through April and May. By mid to late summer surface temperatures commonly rise to roughly 65–78°F (18–26°C) in July and August on warm years, while deeper water remains much colder year-round due to stratification. In early fall the surface usually falls back into the 45–60°F (7–15°C) range as cooling and turnover begin. In winter the lake develops ice cover in colder spells and surface temperatures sit near freezing, around 32°F (0°C).
Swimming is permitted and is a common recreational activity at public beaches and along accessible shorelines because the lake is used for recreation and has maintained access points. Summer conditions, when surface temperatures are in the mid‑60s to upper‑70s °F (about 18–26°C), are most comfortable for swimmers. Safety considerations include naturally cold deep water, variable currents and weather, and occasional water‑quality advisories (for example after heavy rains or for algal blooms), so swimmers should use guarded beaches when available and heed local postings and lifeguard guidance. Remote or winter swimming is not recommended without appropriate precautions.