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 21.9°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 |
|---|---|---|---|
| JUL 16 | 24.1°C | 19.7°C | |
| JUL 17 | 24.2°C | 19.7°C | |
| JUL 18 | 24.3°C | 19.7°C | |
| JUL 19 | 24.3°C | 19.7°C | |
| JUL 20 | 24.0°C | 19.7°C | |
| JUL 21 | 23.8°C | 19.7°C | |
| JUL 22 | 22.9°C | 19.7°C | |
| JUL 23 | 22.3°C | 19.7°C | |
| JUL 24 | 19.7°C | 21.8°C | |
| JUL 25 | 19.7°C | 21.7°C | |
| JUL 26 | 19.7°C | 21.6°C | |
| JUL 27 | 19.7°C | 21.5°C | |
| JUL 28 | 19.7°C | 21.4°C | |
| JUL 29 | 19.7°C | 21.2°C | |
| JUL 30 | 19.7°C | 21.1°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 | 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 |
Waterloo: Weather Forecast
July 24
July 25
July 26
July 27
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.