Lac-Simon — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lac-Simon, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lac-Simon today is 20.5°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 | 20.7°C | 19.0°C | |
| AUG 25 | 20.7°C | 19.0°C | |
| AUG 26 | 20.6°C | 19.0°C | |
| AUG 27 | 20.6°C | 19.0°C | |
| AUG 28 | 19.7°C | 19.0°C | |
| AUG 29 | 20.5°C | 19.0°C | |
| AUG 30 | 20.3°C | 19.0°C | |
| AUG 31 | 20.0°C | 19.0°C | |
| SEP 1 | 16.0°C | 20.3°C | |
| SEP 2 | 16.0°C | 20.1°C | |
| SEP 3 | 16.0°C | 19.8°C | |
| SEP 4 | 16.0°C | 19.6°C | |
| SEP 5 | 16.0°C | 19.4°C | |
| SEP 6 | 16.0°C | 19.2°C | |
| SEP 7 | 16.0°C | 18.9°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 | 21°C |
| July | 15°C | 20°C | 25°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 | 3°C | 6°C |
Lac-Simon: Water Temperature by Location
Lac-Simon: Weather Forecast
September 1
September 2
September 3
September 4
September 5
Location & Local Information
Lac-Simon, located in the Outaouais region of western Quebec, is a popular recreational lake known for its clear water, sandy beaches, and forested surroundings. Because of its moderate depth and southern location within the province, the lake experiences a noticeable warming cycle through the spring and summer months. In early spring, following the ice melt in April, water temperatures remain cold, averaging around 39–45°F (4–7°C). By late May and June, surface temperatures rise steadily to about 54–63°F (12–17°C). During midsummer, from July through August, Lac-Simon reaches its warmest period, with surface temperatures typically between 68–75°F (20–24°C), especially in shallow areas near the beaches. By late September, the lake begins to cool again below 59°F (15°C) as autumn temperatures return.
Swimming in Lac-Simon is allowed and highly popular, making it one of the best-known freshwater swimming spots in western Quebec. The lake’s clear, mild water and soft sandy bottom create ideal conditions for families and recreational swimmers. During midsummer, the water becomes comfortably warm for extended swimming, kayaking, and other activities. The main beach area within Parc Lac-Simon is well maintained and supervised during the season, providing safe and accessible swimming opportunities from late June through early September, when the lake’s temperature and weather are most favorable.