Fish Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Fish Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Fish Lake today is 19.1°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 | 22.9°C | 22.6°C | |
| AUG 25 | 22.8°C | 22.6°C | |
| AUG 26 | 22.5°C | 22.6°C | |
| AUG 27 | 22.2°C | 22.6°C | |
| AUG 28 | 22.0°C | 22.6°C | |
| AUG 29 | 22.0°C | 22.6°C | |
| AUG 30 | 21.5°C | 22.6°C | |
| AUG 31 | 19.1°C | 22.6°C | |
| SEP 1 | 19.5°C | 19.1°C | |
| SEP 2 | 19.5°C | 19.1°C | |
| SEP 3 | 19.5°C | 19.2°C | |
| SEP 4 | 19.5°C | 19.2°C | |
| SEP 5 | 19.5°C | 19.2°C | |
| SEP 6 | 19.5°C | 19.2°C | |
| SEP 7 | 19.5°C | 19.2°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 | 2°C | 4°C |
| February | 0°C | 2°C | 5°C |
| March | 0°C | 3°C | 6°C |
| April | 1°C | 7°C | 12°C |
| May | 4°C | 10°C | 16°C |
| June | 11°C | 16°C | 20°C |
| July | 18°C | 24°C | 29°C |
| August | 19°C | 23°C | 26°C |
| September | 17°C | 20°C | 22°C |
| October | 13°C | 16°C | 19°C |
| November | 3°C | 9°C | 15°C |
| December | 1°C | 4°C | 7°C |
Fish Lake: Water Temperature by Location
Fish Lake: Weather Forecast
September 1
September 2
September 3
September 4
September 5
Location & Local Information
Fish Lake, located in Ontario, is one of the many small freshwater lakes scattered across the province, known for its clear water and peaceful natural surroundings. The water temperature in Fish Lake changes significantly through the year due to its relatively shallow depth and the region’s variable climate. In winter, the lake usually freezes completely, with water temperatures near 0 °C (32 °F). During spring, melting snow and cool air keep the water chilly, around 5–10 °C (41–50 °F). As the summer progresses, surface temperatures rise to more comfortable levels, typically 20–25 °C (68–77 °F), depending on location and weather. In autumn, cooling air quickly lowers the water back to 10–15 °C (50–59 °F), and the lake gradually prepares for another freeze.
Swimming in Fish Lake is generally allowed and most pleasant from late June to early September, when the water reaches its warmest point. The lake’s calm and clean water provides suitable conditions for families and recreational swimmers, and shallow areas warm up quickly under the summer sun. However, outside of this brief season, the low temperatures make swimming uncomfortable or even unsafe due to the risk of cold-water shock. Despite its short summer window, Fish Lake remains a relaxing spot for swimming, boating, and quiet outdoor recreation.