Middle Harbor Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Middle Harbor Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Middle Harbor Lake today is 26.5°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 79°F (26°C) to 82°F (28°C). This is very warm water, allowing for extended stays without any discomfort. Swimming in these conditions will be particularly enjoyable, making it the ideal temperature range for those who want to relax in the sea. Additionally, water in this temperature range is suitable for children and elderly people, as it is comfortable for prolonged stays. 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 4 | 23.6°C | 25.0°C | |
| AUG 5 | 23.6°C | 25.0°C | |
| AUG 6 | 24.4°C | 25.0°C | |
| AUG 7 | 24.5°C | 25.0°C | |
| AUG 8 | 24.5°C | 25.0°C | |
| AUG 9 | 26.7°C | 25.0°C | |
| AUG 10 | 26.4°C | 25.0°C | |
| AUG 11 | 26.4°C | 25.0°C | |
| AUG 12 | 25.0°C | 26.4°C | |
| AUG 13 | 25.0°C | 26.4°C | |
| AUG 14 | 25.0°C | 26.3°C | |
| AUG 15 | 25.0°C | 26.2°C | |
| AUG 16 | 25.0°C | 26.1°C | |
| AUG 17 | 25.0°C | 26.1°C | |
| AUG 18 | 25.0°C | 26.0°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 | 1°C | 4°C |
| February | 0°C | 2°C | 5°C |
| March | 1°C | 6°C | 11°C |
| April | 5°C | 10°C | 16°C |
| May | 11°C | 15°C | 20°C |
| June | 17°C | 21°C | 25°C |
| July | 23°C | 26°C | 30°C |
| August | 22°C | 25°C | 28°C |
| September | 20°C | 24°C | 27°C |
| October | 14°C | 18°C | 21°C |
| November | 6°C | 10°C | 14°C |
| December | 0°C | 3°C | 7°C |
Middle Harbor Lake: Water Temperature by Location
Middle Harbor Lake: Weather Forecast
August 12
August 13
August 14
August 15
August 16
Location & Local Information
Middle Harbor in Ohio experiences the same seasonal swings in water temperature common to inland lakes in the region. Surface temperatures typically rise from the 40s–60s °F (4–16 °C) in spring as ice melts and air warms, reach their warmest in summer often between about 68–78 °F (20–26 °C) depending on depth and sun exposure, then cool through the fall into the 50s–60s °F (10–16 °C) before winter brings surface readings near freezing, roughly 32–40 °F (0–4 °C) where ice or very cold water can occur. These are averages; actual temperatures at Middle Harbor will fluctuate with recent weather, water depth, inflow, and wind-driven mixing, with shallower areas warming faster than deeper sections.
Swimming at Middle Harbor is typically concentrated in the late spring through early fall when surface temperatures are most comfortable; many people find water above about 70 °F (21 °C) preferable for extended swims. Whether swimming is officially allowed depends on local rules and conditions: some shorelines are open to public swimming, while others may be restricted for safety, private ownership, boat traffic, poor water quality, or harmful algal bloom advisories. Cold water below the comfortable range also increases risk of cold shock and hypothermia, so posted signs, local advisories, and current water-quality reports should guide decisions about swimming.