Green River Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Green River Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Green River 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 |
|---|---|---|---|
| APR 11 | 18.5°C | 17.5°C | |
| APR 12 | 18.6°C | 17.5°C | |
| APR 13 | 19.2°C | 17.5°C | |
| APR 14 | 19.7°C | 17.5°C | |
| APR 15 | 20.1°C | 17.5°C | |
| APR 16 | 20.1°C | 17.5°C | |
| APR 17 | 20.3°C | 17.5°C | |
| APR 19 | 17.5°C | 20.0°C | |
| APR 20 | 17.5°C | 19.8°C | |
| APR 21 | 17.5°C | 19.7°C | |
| APR 22 | 17.5°C | 19.6°C | |
| APR 23 | 17.5°C | 19.5°C | |
| APR 24 | 17.5°C | 19.3°C | |
| APR 25 | 17.5°C | 19.2°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 | 3°C | 8°C | 12°C |
| February | 3°C | 8°C | 11°C |
| March | 7°C | 11°C | 16°C |
| April | 11°C | 18°C | 24°C |
| May | 16°C | 21°C | 26°C |
| June | 19°C | 22°C | 24°C |
| July | 21°C | 27°C | 32°C |
| August | 22°C | 26°C | 30°C |
| September | 22°C | 26°C | 29°C |
| October | 19°C | 23°C | 27°C |
| November | 11°C | 15°C | 19°C |
| December | 6°C | 9°C | 12°C |
Green River Lake: Water Temperature by Location
Green River Lake: Weather Forecast
April 19
April 20
April 21
April 22
April 23
Location & Local Information
Green River Lake in central Kentucky experiences noticeable seasonal swings in surface water temperature. In winter the lake often drops into the mid-30s to mid-40s °F (about 2–7 °C), while spring warming typically brings surface temperatures up to the low 50s to mid-60s °F (10–18 °C). By summer, surface readings commonly reach the 70s to low 80s °F (21–28 °C), with occasional warm spells pushing localized surface water toward the mid-80s °F (around 29 °C). In fall the lake cools again, generally ranging from the mid-50s to low 70s °F (13–22 °C). Those numbers vary by depth, shoreline exposure and recent weather, and deeper water remains substantially colder than the surface year-round.
Swimming is allowed at Green River Lake in designated recreation areas because the lake is managed for multiple public uses, including boating and bathing. Public beaches and day-use sites open seasonally and some carry posted advisories or restrictions based on water quality, storms or maintenance; not all sites have lifeguards, so visitors should heed signage and exercise caution. Cold water below the surface, sudden drop-offs, submerged hazards and changing conditions make it important to check local notices and practice standard water-safety measures before entering.