Grayson Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Grayson Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Grayson Lake today is 26.8°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 79°F (26°C) to 82°F (28°C). This is very warm water, allowing for extended stays without any discomfort. Swimming in these conditions will be particularly enjoyable, making it the ideal temperature range for those who want to relax in the sea. Additionally, water in this temperature range is suitable for children and elderly people, as it is comfortable for prolonged stays. 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 4 | 27.2°C | 28.0°C | |
| AUG 5 | 27.2°C | 28.0°C | |
| AUG 6 | 27.6°C | 28.0°C | |
| AUG 7 | 27.6°C | 28.0°C | |
| AUG 8 | 27.4°C | 28.0°C | |
| AUG 9 | 27.6°C | 28.0°C | |
| AUG 10 | 27.2°C | 28.0°C | |
| AUG 11 | 27.2°C | 28.0°C | |
| AUG 12 | 28.0°C | 26.9°C | |
| AUG 13 | 28.0°C | 26.9°C | |
| AUG 14 | 28.0°C | 27.0°C | |
| AUG 15 | 28.0°C | 27.0°C | |
| AUG 16 | 28.0°C | 27.1°C | |
| AUG 17 | 28.0°C | 27.2°C | |
| AUG 18 | 28.0°C | 27.2°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 | 2°C | 5°C | 8°C |
| February | 1°C | 6°C | 9°C |
| March | 4°C | 9°C | 14°C |
| April | 8°C | 15°C | 21°C |
| May | 15°C | 20°C | 24°C |
| June | 19°C | 24°C | 28°C |
| July | 19°C | 24°C | 30°C |
| August | 24°C | 28°C | 32°C |
| September | 21°C | 27°C | 33°C |
| October | 17°C | 19°C | 22°C |
| November | 8°C | 13°C | 17°C |
| December | 4°C | 6°C | 9°C |
Grayson Lake: Water Temperature by Location
Grayson Lake: Weather Forecast
August 12
August 13
August 14
August 15
August 16
Location & Local Information
Grayson Lake in northeastern Kentucky typically follows the seasonal patterns of temperate reservoirs, with surface water coolest in winter and warmest in summer. Typical winter surface temperatures are often in the upper 30s to mid 40s °F (about 3–7 °C). In spring the lake warms through the 50s and 60s °F (10–18 °C) as air temperatures rise and stratification begins. Summer surface temperatures commonly reach the low 70s to mid 80s °F (21–29 °C), which is when the water is most comfortable for swimming. During fall the lake cools back into the 50s–60s °F (13–18 °C) range as conditions shift toward turnover and colder weather.
Swimming is allowed at Grayson Lake in areas managed by the state park and local authorities, and visitors often swim when surface temperatures are in the 70s °F (around 21 °C) or higher. Access typically occurs at designated beach or recreation sites rather than everywhere along the shoreline, both for safety and water-quality reasons. Swimmers should be aware of common reservoir hazards such as changing water levels, submerged objects, boat traffic and the general absence of lifeguards; these factors influence where and when swimming is recommended even though it is permitted in managed areas.