Blue Mountain Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Blue Mountain Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Blue Mountain Lake today is 18.6°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 13 | 20.6°C | 22.5°C | |
| OCT 14 | 20.4°C | 22.5°C | |
| OCT 15 | 20.7°C | 22.5°C | |
| OCT 16 | 20.7°C | 22.5°C | |
| OCT 17 | 21.4°C | 22.5°C | |
| OCT 18 | 21.1°C | 22.5°C | |
| OCT 19 | 20.0°C | 22.5°C | |
| OCT 20 | 19.3°C | 22.5°C | |
| OCT 21 | 22.5°C | 18.8°C | |
| OCT 22 | 22.5°C | 19.0°C | |
| OCT 23 | 22.5°C | 19.2°C | |
| OCT 24 | 22.5°C | 19.4°C | |
| OCT 25 | 22.5°C | 19.6°C | |
| OCT 26 | 22.5°C | 19.8°C | |
| OCT 27 | 22.5°C | 20.0°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 | 7°C | 12°C |
| February | 2°C | 7°C | 13°C |
| March | 6°C | 14°C | 22°C |
| April | 4°C | 13°C | 22°C |
| May | 17°C | 21°C | 26°C |
| June | 19°C | 24°C | 29°C |
| July | 25°C | 30°C | 34°C |
| August | 25°C | 28°C | 32°C |
| September | 23°C | 27°C | 31°C |
| October | 19°C | 23°C | 26°C |
| November | 13°C | 17°C | 20°C |
| December | 7°C | 11°C | 16°C |
Blue Mountain Lake: Water Temperature by Location
Blue Mountain Lake: Weather Forecast
October 21
October 22
October 23
October 24
October 25
Location & Local Information
Blue Mountain Lake, a reservoir in the Ouachita National Forest in Arkansas, experiences water temperatures typical of the state's interior, with warm summers and mild winters. In the cool winter months, the surface water temperature ranges from the 40s to low 50s F (4∘C to 13∘C). During the long, peak summer season, the lake warms significantly, with surface temperatures often reaching a very comfortable and warm range for swimming, generally peaking between 75∘F and 85∘F (24∘C to 29∘C).
Swimming is widely permitted and encouraged in Blue Mountain Lake, as it is managed by the U.S. Army Corps of Engineers for flood control and recreation. The lake features several day-use areas and campgrounds which provide excellent public access. The Waveland Park area often includes designated swimming beaches, confirming the activity is supported. However, these designated beaches are typically unsupervised by lifeguards, meaning all swimming is strictly at one's own risk. Swimmers should be aware of boat traffic, especially in the main channel, and the sudden depth changes that characterize reservoir lakes.