Grand River — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in the Grand River, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in the Grand River today is 21.3°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 |
|---|---|---|---|
| JUN 6 | 17.4°C | 18.5°C | |
| JUN 7 | 18.7°C | 18.5°C | |
| JUN 8 | 19.6°C | 18.5°C | |
| JUN 10 | 19.8°C | 18.5°C | |
| JUN 11 | 20.8°C | 18.5°C | |
| JUN 12 | 21.0°C | 18.5°C | |
| JUN 13 | 21.3°C | 18.5°C | |
| JUN 14 | 18.5°C | 21.2°C | |
| JUN 15 | 18.5°C | 21.0°C | |
| JUN 16 | 18.5°C | 20.9°C | |
| JUN 17 | 18.5°C | 20.7°C | |
| JUN 18 | 18.5°C | 20.6°C | |
| JUN 19 | 18.5°C | 20.5°C | |
| JUN 20 | 18.5°C | 20.3°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 | 5°C | 9°C |
| February | 0°C | 5°C | 9°C |
| March | 2°C | 7°C | 11°C |
| April | 5°C | 10°C | 16°C |
| May | 8°C | 13°C | 21°C |
| June | 14°C | 19°C | 23°C |
| July | 17°C | 22°C | 26°C |
| August | 17°C | 21°C | 25°C |
| September | 11°C | 16°C | 21°C |
| October | 8°C | 15°C | 21°C |
| November | 3°C | 8°C | 16°C |
| December | 2°C | 5°C | 8°C |
Grand River: Water Temperature by Location
Grand River: Weather Forecast
June 14
June 15
June 16
June 17
June 18
June 19
Location & Local Information
Source:
• location Geauga County
Mouth Lake Erie
• location Fairport Harbor
Length 102.7 mi (165.3 km)
The Grand River in Ohio is a scenic waterway known for its natural beauty and diverse ecosystems. Its water temperature varies throughout the year, heavily influenced by the seasons. In the spring, as snowmelt and rains feed the river, temperatures are cool, typically ranging between 40°F and 55°F (4°C to 13°C). By the summer months, the water warms to a more comfortable range of 65°F–75°F (18°C–24°C), especially in calmer, slower-moving sections.
Swimming in the Grand River is possible in certain areas, but it is not a primary recreational activity due to the river's variable depth, occasional strong currents, and fluctuating water quality. Some shallow stretches and calmer pools may be suitable for wading or cooling off during the summer, but these spots should be approached with caution. The river is better known for kayaking, canoeing, and fishing, with its picturesque surroundings drawing outdoor enthusiasts. Those seeking safer and more consistent swimming experiences often turn to nearby lakes or designated swimming areas in local parks.