Waterloo — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Waterloo, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Waterloo today is 24°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 75°F (23°C) to 79°F (26°C). This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health. 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 5 | 21.8°C | 20.5°C | |
| AUG 6 | 22.6°C | 20.5°C | |
| AUG 7 | 22.7°C | 20.5°C | |
| AUG 8 | 22.7°C | 20.5°C | |
| AUG 9 | 23.5°C | 20.5°C | |
| AUG 10 | 23.9°C | 20.5°C | |
| AUG 11 | 24.0°C | 20.5°C | |
| AUG 12 | 23.9°C | 20.5°C | |
| AUG 13 | 20.5°C | 23.8°C | |
| AUG 14 | 20.5°C | 23.7°C | |
| AUG 15 | 20.5°C | 23.5°C | |
| AUG 16 | 20.5°C | 23.3°C | |
| AUG 17 | 20.5°C | 23.1°C | |
| AUG 18 | 20.5°C | 23.0°C | |
| AUG 19 | 20.5°C | 22.8°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 | 10°C | 16°C |
| June | 7°C | 14°C | 21°C |
| July | 15°C | 20°C | 25°C |
| August | 17°C | 21°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 |
Waterloo: Weather Forecast
August 13
August 14
August 15
August 16
August 17
Location & Local Information
Waterloo's local water bodies, primarily the Laurel Creek Reservoir at the Laurel Creek Conservation Area, exhibit a typical inland temperature range. In the cold winter months, the reservoir and local creeks are near freezing, generally ranging from 0∘C to 5∘C (32∘F to 41∘F) and are often ice-covered. During the peak summer season, particularly in July and August, the surface water in the reservoir can warm up to a comfortable range, typically reaching 20∘C to 24∘C (68∘F to 75∘F), which is suitable for water contact recreation.
Swimming is specifically permitted and encouraged at the designated sandy beach within the Laurel Creek Conservation Area. However, the beach is unsupervised, meaning there are no official lifeguards on duty, and all swimming is strictly at one's own risk. The Grand River Conservation Authority (GRCA) provides information on beach conditions and monitors the water for E. coli bacteria. Swimmers should also note that the reservoir features a steep drop-off and potential underwater tree stumps. Due to these factors, many residents opt for nearby controlled environments like the Elora Quarry or the City of Waterloo's outdoor pools for safer swimming.