Nimisila Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Nimisila Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Nimisila Reservoir today is 11.6°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
❌ As of today, the minimum water temperature ranges from 50°F (10°C) to 54°F (12°C). The water is slightly warmer, but still cool for most people. Swimming in such conditions is possible, but for most people, the time spent in the water should be limited to avoid hypothermia. Even experienced swimmers may feel discomfort if they stay in the water for too long. To improve comfort and safety, a wetsuit can be used. 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 |
|---|---|---|---|
| OCT 26 | 14.8°C | 19.0°C | |
| OCT 27 | 14.0°C | 19.0°C | |
| OCT 28 | 14.7°C | 19.0°C | |
| OCT 29 | 14.3°C | 19.0°C | |
| OCT 30 | 13.9°C | 19.0°C | |
| OCT 31 | 14.1°C | 19.0°C | |
| NOV 1 | 14.9°C | 10.5°C | |
| NOV 2 | 11.6°C | 10.5°C | |
| NOV 3 | 10.5°C | 11.5°C | |
| NOV 4 | 10.5°C | 11.5°C | |
| NOV 5 | 10.5°C | 11.4°C | |
| NOV 6 | 10.5°C | 11.4°C | |
| NOV 7 | 10.5°C | 11.3°C | |
| NOV 8 | 10.5°C | 11.3°C | |
| NOV 9 | 10.5°C | 11.2°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 | 3°C | 6°C |
| February | 0°C | 4°C | 7°C |
| March | 1°C | 6°C | 10°C |
| April | 4°C | 11°C | 18°C |
| May | 12°C | 17°C | 21°C |
| June | 15°C | 20°C | 24°C |
| July | 21°C | 25°C | 30°C |
| August | 21°C | 25°C | 29°C |
| September | 20°C | 23°C | 26°C |
| October | 15°C | 19°C | 23°C |
| November | 6°C | 11°C | 15°C |
| December | 3°C | 6°C | 9°C |
Nimisila Reservoir: Water Temperature by Location
Nimisila Reservoir: Weather Forecast
November 3
November 4
November 5
November 6
November 7
Location & Local Information
Nimisila Reservoir, a managed water body in northeastern Ohio, experiences the typical seasonal temperature swings of midwestern reservoirs. Surface temperatures in winter often hover near freezing, roughly 32–39°F (0–4°C), while spring sees a rise into the 40s and 50s°F (4–15°C) as the lake stratifies. In summer the surface commonly warms to about 68–80°F (20–27°C), and on hot stretches can occasionally approach the mid-80s°F (around 29°C), though deeper layers remain noticeably cooler. By autumn the upper water cools back into the 50s–60s°F (10–17°C) before turnover sets in. Short-term conditions vary with air temperature, wind, sunlight, and depth, so measurements at the surface don’t reflect colder water below, which can present a shock risk.
Swimming in Nimisila Reservoir is not permitted for reasons tied to public safety and resource protection. The reservoir serves as a managed water supply and recreational area where authorities restrict direct contact to reduce contamination risks and to avoid hazards such as sudden depth changes, submerged structures, and the absence of lifeguarded beaches. Recreational use is generally limited to activities like boating and fishing in designated areas, and visitors are advised to follow posted rules and local management guidance for safe enjoyment.