Lake Cumberland — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Cumberland, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Cumberland today is 22.4°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 |
|---|---|---|---|
| JUN 3 | 20.3°C | 22.0°C | |
| JUN 4 | 20.3°C | 22.0°C | |
| JUN 5 | 21.4°C | 22.0°C | |
| JUN 6 | 21.5°C | 22.0°C | |
| JUN 7 | 21.9°C | 22.0°C | |
| JUN 8 | 22.1°C | 22.0°C | |
| JUN 10 | 22.4°C | 22.0°C | |
| JUN 11 | 22.0°C | 22.4°C | |
| JUN 12 | 22.0°C | 22.4°C | |
| JUN 13 | 22.0°C | 22.3°C | |
| JUN 14 | 22.0°C | 22.3°C | |
| JUN 15 | 22.0°C | 22.3°C | |
| JUN 16 | 22.0°C | 22.3°C | |
| JUN 17 | 22.0°C | 22.3°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 | 3°C | 7°C | 10°C |
| February | 3°C | 8°C | 12°C |
| March | 5°C | 10°C | 15°C |
| April | 11°C | 16°C | 21°C |
| May | 15°C | 19°C | 23°C |
| June | 19°C | 22°C | 25°C |
| July | 21°C | 24°C | 27°C |
| August | 22°C | 25°C | 28°C |
| September | 22°C | 25°C | 28°C |
| October | 19°C | 22°C | 25°C |
| November | 11°C | 15°C | 19°C |
| December | 6°C | 9°C | 12°C |
Lake Cumberland: Water Temperature by Location
Lake Cumberland: Weather Forecast
June 9
June 10
June 11
June 12
June 13
Location & Local Information
Lake Cumberland’s surface water temperatures vary considerably through the year because it is a large, deep reservoir in temperate Kentucky. In summer months (June–August) surface readings commonly range from about 75–85°F (24–29°C), sometimes approaching 86°F (30°C) on very warm days. Spring (March–May) temperatures are cooler, roughly 45–65°F (7–18°C), while autumn (September–November) typically falls between 55–70°F (13–21°C). Winter surface temperatures often sit near 34–45°F (1–7°C). Because the lake stratifies, deeper water can remain much colder—often in the 40s°F (4–10°C) even during summer—so temperature can change quickly with depth or in shaded coves.
Swimming is allowed at Lake Cumberland, particularly in designated beach and park areas maintained by state and local authorities, and the reservoir is a popular spot for recreational swimming in summer. Restrictions and posted advisories are used to protect swimmers; beaches may close temporarily for safety if water quality tests, algae blooms, high boat traffic, low water levels or hazardous currents create risks. The lake’s depth, sudden drop-offs and cold deeper water are reasons for caution, and swimmers are encouraged to use lifeguarded zones, life jackets, and to heed local rules and warnings.