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 28.9°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature is above 82°F (28°C). This is very warm water, which may feel almost hot to most people. Swimming in such conditions is perfect for those seeking relaxation and comfort in the water. These waters are often preferred for relaxation in hot weather, as the water temperature does not cool the body significantly. However, it is important to remember that in such warm waters, caution is necessary, as prolonged exposure without rest can lead to overheating. 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 24 | 28.2°C | 26.1°C | |
| AUG 25 | 28.2°C | 26.1°C | |
| AUG 26 | 28.1°C | 26.1°C | |
| AUG 27 | 28.1°C | 26.1°C | |
| AUG 28 | 28.1°C | 26.1°C | |
| AUG 29 | 28.3°C | 26.1°C | |
| AUG 30 | 28.3°C | 26.1°C | |
| AUG 31 | 27.8°C | 26.1°C | |
| SEP 1 | 26.0°C | 28.8°C | |
| SEP 2 | 26.0°C | 28.6°C | |
| SEP 3 | 26.0°C | 28.5°C | |
| SEP 4 | 26.0°C | 28.3°C | |
| SEP 5 | 26.0°C | 28.2°C | |
| SEP 6 | 26.0°C | 28.0°C | |
| SEP 7 | 26.0°C | 27.9°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 | 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 1
September 2
September 3
September 4
September 5
September 6
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.