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 21.5°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 |
|---|---|---|---|
| JUN 3 | 18.8°C | 21.5°C | |
| JUN 4 | 18.6°C | 21.5°C | |
| JUN 5 | 19.3°C | 21.5°C | |
| JUN 6 | 19.6°C | 21.5°C | |
| JUN 7 | 20.9°C | 21.5°C | |
| JUN 8 | 20.6°C | 21.5°C | |
| JUN 10 | 21.5°C | 21.5°C | |
| JUN 11 | 21.5°C | 21.5°C | |
| JUN 12 | 21.5°C | 21.5°C | |
| JUN 13 | 21.5°C | 21.5°C | |
| JUN 14 | 21.5°C | 21.5°C | |
| JUN 15 | 21.5°C | 21.5°C | |
| JUN 16 | 21.5°C | 21.5°C | |
| JUN 17 | 21.5°C | 21.5°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 | 24°C | 28°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
June 9
June 10
June 11
June 12
June 13
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.