Patoka Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Patoka Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Patoka Lake today is 19.4°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
⚠️ As of today, the minimum water temperature ranges from 65°F (18°C) to 68°F (20°C). This is already quite warm water, which is ideal for most people. Swimming becomes comfortable, and prolonged stays in the water do not cause discomfort. This temperature is perfect for family trips and for those who prefer warmer water. It is also comfortable for water sports such as surfing or swimming. 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 |
|---|---|---|---|
| OCT 5 | 22.0°C | 19.5°C | |
| OCT 6 | 21.6°C | 19.5°C | |
| OCT 7 | 21.0°C | 19.5°C | |
| OCT 8 | 20.3°C | 19.5°C | |
| OCT 9 | 20.1°C | 19.5°C | |
| OCT 10 | 20.2°C | 19.5°C | |
| OCT 11 | 20.4°C | 19.5°C | |
| OCT 12 | 20.1°C | 19.5°C | |
| OCT 13 | 19.5°C | 19.4°C | |
| OCT 14 | 19.5°C | 19.4°C | |
| OCT 15 | 19.5°C | 19.4°C | |
| OCT 16 | 19.5°C | 19.4°C | |
| OCT 17 | 19.5°C | 19.4°C | |
| OCT 18 | 19.5°C | 19.4°C | |
| OCT 19 | 19.5°C | 19.4°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 | 11°C |
| February | 2°C | 7°C | 11°C |
| March | 3°C | 7°C | 12°C |
| April | 6°C | 12°C | 18°C |
| May | 15°C | 18°C | 22°C |
| June | 17°C | 22°C | 27°C |
| July | 24°C | 28°C | 32°C |
| August | 22°C | 26°C | 30°C |
| September | 19°C | 23°C | 28°C |
| October | 15°C | 20°C | 24°C |
| November | 8°C | 14°C | 18°C |
| December | 3°C | 7°C | 11°C |
Patoka Lake: Water Temperature by Location
Patoka Lake: Weather Forecast
October 13
October 14
October 15
October 16
October 17
October 18
Location & Local Information
Patoka Lake in southern Indiana experiences a wide range of surface temperatures through the year. In the warmest months of June through August, surface water commonly warms to roughly 75–85°F (24–29°C), providing comfortable conditions for recreational use. Late spring and early fall typically see temperatures from about 55–70°F (13–21°C) and 60–75°F (16–24°C), respectively, as the water transitions between seasons. In winter the lake cools sharply; surface temperatures often fall to near freezing up to around 32–45°F (0–7°C) depending on air temperatures and wind, and deeper water remains colder. Local conditions such as recent weather, depth, and inflows can shift these ranges from year to year.
Swimming at Patoka Lake is generally allowed in designated recreation areas and at managed beaches, where authorities post rules and monitor conditions for safety and water quality. During the warm season, these areas are the primary spots for swimmers because they are set aside away from heavy boat traffic and may have periodic testing for bacteria. However, swimming can be restricted or discouraged when advisories are issued, after heavy rains, or in the colder months when hypothermia becomes a significant risk; even in fall and spring, water that feels brisk can be hazardous. Visitors should follow posted signs and local guidance before entering the water.