Summersville Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Summersville Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Summersville Lake today is 25.2°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature ranges from 75°F (23°C) to 79°F (26°C). This is a very comfortable temperature for swimming, and many people can enjoy prolonged stays in the water without feeling cold. The water is pleasantly warm, making it ideal for relaxation and water sports. This temperature range is particularly popular among tourists, as it combines comfort and safety for health. 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 | 24.9°C | 26.0°C | |
| AUG 5 | 25.2°C | 26.0°C | |
| AUG 6 | 25.6°C | 26.0°C | |
| AUG 7 | 25.6°C | 26.0°C | |
| AUG 8 | 25.9°C | 26.0°C | |
| AUG 9 | 25.7°C | 26.0°C | |
| AUG 10 | 25.0°C | 26.0°C | |
| AUG 11 | 25.0°C | 26.0°C | |
| AUG 12 | 26.0°C | 25.2°C | |
| AUG 13 | 26.0°C | 25.3°C | |
| AUG 14 | 26.0°C | 25.3°C | |
| AUG 15 | 26.0°C | 25.4°C | |
| AUG 16 | 26.0°C | 25.4°C | |
| AUG 17 | 26.0°C | 25.4°C | |
| AUG 18 | 26.0°C | 25.5°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 | 1°C | 9°C | 17°C |
| February | 0°C | 10°C | 19°C |
| March | 3°C | 11°C | 19°C |
| April | 7°C | 16°C | 25°C |
| May | 13°C | 20°C | 26°C |
| June | 16°C | 22°C | 27°C |
| July | 22°C | 27°C | 32°C |
| August | 22°C | 26°C | 30°C |
| September | 20°C | 25°C | 30°C |
| October | 14°C | 20°C | 26°C |
| November | 6°C | 15°C | 22°C |
| December | 1°C | 7°C | 11°C |
Summersville Lake: Water Temperature by Location
Summersville Lake: Weather Forecast
August 12
August 13
August 14
August 15
August 16
Location & Local Information
Summersville Lake is a deep, reservoir lake in West Virginia whose water temperatures reflect both seasonal air temperatures and its depth. Typical seasonal surface ranges are roughly winter 33–45°F (0–7°C), spring 45–65°F (7–18°C), summer 68–78°F (20–26°C), and fall 50–70°F (10–21°C). Because the lake is very deep, surface warmth in summer can be offset by much colder temperatures just a few feet down; thermoclines and cold bottom layers are common and make the overall lake cooler than shallow inland waters. Day-to-day temperatures also vary with recent weather, inflows and releases from the dam.
Swimming is allowed at Summersville Lake in designated beach and recreation areas overseen by the U.S. Army Corps of Engineers, but conditions warrant caution. Designated spots reduce conflicts with boat traffic and mark safer zones, yet lifeguards are not always present and water near the dam or in boat lanes can be hazardous. The combination of cold, deep water and abrupt temperature changes raises the risk of cold shock and hypothermia, so swimmers should remain in marked areas, wear appropriate protection if needed, and heed posted advisories and seasonal restrictions for safe recreation.