Lake Barkley — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Barkley, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Barkley today is 25.1°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 75°F (23°C) to 79°F (26°C). This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health. 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 |
|---|---|---|---|
| SEP 14 | 25.9°C | 26.0°C | |
| SEP 15 | 25.4°C | 26.0°C | |
| SEP 16 | 25.3°C | 26.0°C | |
| SEP 17 | 24.9°C | 26.0°C | |
| SEP 18 | 25.3°C | 26.0°C | |
| SEP 19 | 25.2°C | 26.0°C | |
| SEP 20 | 25.2°C | 26.0°C | |
| SEP 21 | 25.1°C | 26.0°C | |
| SEP 22 | 26.0°C | 25.1°C | |
| SEP 23 | 26.0°C | 25.2°C | |
| SEP 24 | 26.0°C | 25.2°C | |
| SEP 25 | 26.0°C | 25.3°C | |
| SEP 26 | 26.0°C | 25.3°C | |
| SEP 27 | 26.0°C | 25.4°C | |
| SEP 28 | 26.0°C | 25.4°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 | 12°C |
| March | 4°C | 11°C | 17°C |
| April | 12°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 | 8°C | 11°C |
Lake Barkley: Water Temperature by Location
Lake Barkley: Weather Forecast
September 21
September 22
September 23
September 24
September 25
Location & Local Information
Lake Barkley’s surface temperatures follow a familiar seasonal pattern for a large Tennessee reservoir. In winter months the surface typically cools to roughly 35–50°F (1–10°C), while spring brings a steady rise into the 50–70°F (10–21°C) range as the lake warms. Peak summer surface temperatures are commonly between 75–85°F (24–29°C), and in shallow coves and on calm, sunny days parts of the lake can reach the upper 80s°F (29–32°C). During autumn the water usually moderates again to roughly 60–75°F (15–24°C) as air temperatures decline. Deeper water remains colder year-round, so these figures are representative of near-surface conditions where swimming and boating occur.
Swimming at Lake Barkley is allowed at designated recreation areas and beaches, and many visitors swim from boats or shoreline access points, but it is governed by local rules and seasonal advisories. The lake is managed for multiple uses, so safety considerations—boat traffic, submerged hazards, variable depths and currents near dam structures—mean that swimming is encouraged only in appropriate, signed locations and when water-quality advisories (for example, algal blooms or runoff-related contamination) are not in effect. Observing posted signs, using life jackets, and checking current local advisories are sensible precautions before entering the water.