Hoover Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Hoover Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Hoover Reservoir today is 17.1°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 60°F (15°C) to 65°F (18°C). The water is comfortable for most people, making it an ideal range for water sports enthusiasts. The temperature does not cause significant discomfort, and swimming will be pleasant for the majority. However, it's important to remember that prolonged exposure to the water can still lead to cooling, so it's essential to monitor the time spent in the water, especially for children or elderly people. 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 5 | 19.6°C | 19.5°C | |
| OCT 6 | 18.9°C | 19.5°C | |
| OCT 7 | 18.8°C | 19.5°C | |
| OCT 8 | 18.0°C | 19.5°C | |
| OCT 9 | 18.1°C | 19.5°C | |
| OCT 10 | 17.9°C | 19.5°C | |
| OCT 11 | 17.2°C | 19.5°C | |
| OCT 12 | 17.8°C | 19.5°C | |
| OCT 13 | 19.5°C | 17.2°C | |
| OCT 14 | 19.5°C | 17.3°C | |
| OCT 15 | 19.5°C | 17.5°C | |
| OCT 16 | 19.5°C | 17.6°C | |
| OCT 17 | 19.5°C | 17.7°C | |
| OCT 18 | 19.5°C | 17.8°C | |
| OCT 19 | 19.5°C | 17.9°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 | 5°C |
| February | 0°C | 4°C | 6°C |
| March | 2°C | 7°C | 11°C |
| April | 4°C | 11°C | 18°C |
| May | 13°C | 17°C | 21°C |
| June | 17°C | 21°C | 25°C |
| July | 19°C | 24°C | 29°C |
| August | 22°C | 26°C | 29°C |
| September | 20°C | 25°C | 30°C |
| October | 14°C | 20°C | 25°C |
| November | 5°C | 10°C | 15°C |
| December | 2°C | 6°C | 10°C |
Hoover Reservoir: Water Temperature by Location
Hoover Reservoir: Weather Forecast
October 13
October 14
October 15
October 16
October 17
October 18
Location & Local Information
Hoover Reservoir, north of Columbus, Ohio, experiences typical Midwestern seasonal temperature swings. Surface temperatures in winter generally hover near freezing, about 33–40°F (0–4°C), with ice possible in cold spells. Spring warms from roughly 40–60°F (4–16°C) as runoff and increasing air temperatures raise the lake. In summer the surface commonly reaches about 68–80°F (20–27°C) on warm days, though shallow bays can climb a few degrees higher while deeper water remains considerably cooler due to stratification. Fall sees cooling back to roughly 50–68°F (10–20°C) before winter ice formation begins. These figures are approximate and vary with weather, depth, and local inflows.
Despite the inviting summer surface temperatures, swimming is not permitted at Hoover Reservoir. The reservoir serves as a municipal drinking-water supply and is managed to protect water quality; therefore public swimming is banned for public-health, safety, and legal reasons. Water-contact restrictions also reduce contamination risk and address safety concerns such as cold-water shock and limited lifeguard presence. While recreational activities like walking, fishing at designated spots, and controlled boating exist nearby, direct swimming in the reservoir itself is prohibited to safeguard the water supply and visitors.