Kentucky — Water Temperature Today and Throughout the Year

Water Temperature in Lakes and Rivers

Popular Lakes

Popular Rivers

Popular Places

Water Temperature and Swimming Overview

Water Temperature Trends

In Kentucky, the water temperatures in rivers and lakes can vary widely depending on the time of year and the location. During the summer months, lakes such as Lake Cumberland and Kentucky Lake experience warmer waters, with temperatures typically ranging from 75°F to 85°F (24°C to 29°C). These temperatures are perfect for swimming, water skiing, and fishing, as the water is comfortable for extended periods of recreational activities. The state's numerous lakes, including Barren River Lake and Rough River Lake, become popular destinations for boaters and water enthusiasts when the temperatures rise.

As fall approaches, the water temperatures in Kentucky's rivers and lakes gradually cool down. By late September and October, lake temperatures typically drop to around 60°F to 70°F (15.5°C to 21°C), making the water still suitable for fishing and other activities, though less ideal for swimming. The Kentucky River, which runs through the state, also sees a decrease in temperature during this time, with its waters ranging from 55°F to 65°F (13°C to 18°C) in the fall months. Cooler temperatures often attract anglers who seek out the calmer waters for catching fish such as bass and trout.

By winter, Kentucky's rivers and lakes experience much colder water temperatures. Lakes like Herrington Lake and the reservoirs in the area can see water temperatures drop to 35°F to 45°F (1.5°C to 7°C), making most recreational water activities such as swimming and boating impractical. However, these cooler waters can still be enjoyed by winter anglers who seek to catch fish that thrive in colder temperatures, such as walleye. The cold temperatures also lead to slower-moving rivers, and kayaking or canoeing becomes more challenging due to the lower water flow and colder conditions.