Kentucky Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Kentucky Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Kentucky Lake today is 20.1°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 |
|---|---|---|---|
| OCT 5 | 22.5°C | 22.5°C | |
| OCT 6 | 22.1°C | 22.5°C | |
| OCT 7 | 21.8°C | 22.5°C | |
| OCT 8 | 21.2°C | 22.5°C | |
| OCT 9 | 20.9°C | 22.5°C | |
| OCT 10 | 20.9°C | 22.5°C | |
| OCT 11 | 21.1°C | 22.5°C | |
| OCT 12 | 20.7°C | 22.5°C | |
| OCT 13 | 22.5°C | 20.2°C | |
| OCT 14 | 22.5°C | 20.3°C | |
| OCT 15 | 22.5°C | 20.5°C | |
| OCT 16 | 22.5°C | 20.6°C | |
| OCT 17 | 22.5°C | 20.7°C | |
| OCT 18 | 22.5°C | 20.8°C | |
| OCT 19 | 22.5°C | 20.9°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 | 1°C | 6°C | 9°C |
| February | 2°C | 7°C | 11°C |
| March | 4°C | 11°C | 17°C |
| April | 13°C | 17°C | 22°C |
| May | 15°C | 20°C | 25°C |
| June | 20°C | 24°C | 28°C |
| July | 23°C | 26°C | 29°C |
| August | 24°C | 26°C | 29°C |
| September | 23°C | 26°C | 29°C |
| October | 19°C | 23°C | 26°C |
| November | 10°C | 15°C | 19°C |
| December | 5°C | 9°C | 11°C |
Kentucky Lake: Water Temperature by Location
Kentucky Lake: Weather Forecast
October 13
October 14
October 15
October 16
October 17
October 18
Location & Local Information
Kentucky Lake, a large TVA reservoir on the Tennessee River, shows marked seasonal variation in surface temperatures. In winter months the water often cools to roughly 35–50°F (2–10°C). During spring it warms into the 50–70°F range (10–21°C) as seasonal runoff and air temperatures rise. In summer the lake’s surface typically reaches comfortable levels for swimming, commonly around 75–85°F (24–29°C), and in shallow coves can briefly approach 90°F (32°C) during heat waves. Autumn brings a steady decline, with surface temperatures usually between 55–75°F (13–24°C) as the lake sheds summer heat. Deeper water remains colder year-round and thermoclines can produce much cooler conditions below the surface.
Swimming is generally allowed in many parts of Kentucky Lake and the reservoir is used widely for recreation, with a number of park beaches and public access points designated for bathing. However, there are important safety and water-quality considerations: many areas are unsupervised with no lifeguards, boat traffic and wake zones increase risk, submerged structure and sudden drop-offs can be hazardous, and colder shoulder-season temperatures raise the chance of cold shock. Occasional algal blooms or runoff events may prompt advisories, so swimmers should choose designated swim areas, check local notices, and exercise caution.