Lake Témiscouata — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Témiscouata, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Témiscouata today is 21.4°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 | 22.5°C | 20.6°C | |
| AUG 25 | 22.9°C | 20.6°C | |
| AUG 26 | 22.9°C | 20.6°C | |
| AUG 27 | 22.0°C | 20.6°C | |
| AUG 28 | 21.9°C | 20.6°C | |
| AUG 29 | 21.9°C | 20.6°C | |
| AUG 30 | 21.9°C | 20.6°C | |
| AUG 31 | 21.4°C | 20.6°C | |
| SEP 1 | 16.0°C | 21.1°C | |
| SEP 2 | 16.0°C | 20.9°C | |
| SEP 3 | 16.0°C | 20.6°C | |
| SEP 4 | 16.0°C | 20.3°C | |
| SEP 5 | 16.0°C | 20.1°C | |
| SEP 6 | 16.0°C | 19.8°C | |
| SEP 7 | 16.0°C | 19.5°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 | 19°C | 24°C |
| August | 17°C | 21°C | 25°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 | 3°C | 6°C |
Lake Témiscouata: Water Temperature by Location
Lake Témiscouata: Weather Forecast
September 1
September 2
September 3
September 4
September 5
September 6
Location & Local Information
Lake Témiscouata, located in the Bas-Saint-Laurent region of Quebec, is a long, narrow freshwater lake surrounded by forested hills and small communities. As one of the largest lakes in the region, it experiences distinct seasonal changes in temperature influenced by the province’s continental climate. In early spring, following the ice melt in April or early May, the surface water remains cold, averaging around 39–45°F (4–7°C). By late May and June, it warms to about 52–61°F (11–16°C). During midsummer, from July through August, the lake reaches its warmest period, with surface temperatures typically ranging between 66–73°F (19–23°C) in shallower bays, while deeper areas remain cooler at around 59–63°F (15–17°C). By late September, temperatures drop again below 57°F (14°C) as autumn arrives.
Swimming in Lake Témiscouata is allowed and very popular, especially within Parc national du Lac-Témiscouata, where beaches and recreational areas are well maintained. The lake’s clear, clean water and gentle shorelines create ideal conditions for families and casual swimmers. During midsummer, the water becomes comfortably warm for long swims and boating activities, while the scenic surroundings enhance the experience. The best swimming season extends from late June through early September, when both air and water temperatures provide the most pleasant and safe conditions for outdoor recreation.