Stonecoal Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Stonecoal Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Stonecoal Reservoir today is 20.6°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 | 18.1°C | 19.5°C | |
| JUN 4 | 18.3°C | 19.5°C | |
| JUN 5 | 19.0°C | 19.5°C | |
| JUN 6 | 19.4°C | 19.5°C | |
| JUN 7 | 20.2°C | 19.5°C | |
| JUN 8 | 20.2°C | 19.5°C | |
| JUN 10 | 20.6°C | 19.5°C | |
| JUN 11 | 19.5°C | 20.5°C | |
| JUN 12 | 19.5°C | 20.5°C | |
| JUN 13 | 19.5°C | 20.4°C | |
| JUN 14 | 19.5°C | 20.4°C | |
| JUN 15 | 19.5°C | 20.3°C | |
| JUN 16 | 19.5°C | 20.3°C | |
| JUN 17 | 19.5°C | 20.2°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 | 4°C | 6°C |
| February | 0°C | 4°C | 7°C |
| March | 2°C | 8°C | 14°C |
| April | 5°C | 12°C | 19°C |
| May | 12°C | 16°C | 21°C |
| June | 15°C | 20°C | 24°C |
| July | 21°C | 24°C | 26°C |
| August | 21°C | 23°C | 26°C |
| September | 21°C | 23°C | 26°C |
| October | 14°C | 19°C | 23°C |
| November | 6°C | 11°C | 15°C |
| December | 3°C | 6°C | 8°C |
Stonecoal Reservoir: Water Temperature by Location
Stonecoal Reservoir: Weather Forecast
June 9
June 10
June 11
June 12
June 13
Location & Local Information
Stonecoal Reservoir’s surface temperatures follow the typical seasonal pattern of mid-Appalachian lakes, with appreciable variation by depth and weather. In winter the surface often falls near freezing, roughly 32–40°F (0–4°C). Spring temperatures rise through the 40s and 50s°F (4–15°C) as the lake mixes and runoff adds cooler water. By summer the warmer surface layer commonly reaches the mid-60s to high-70s°F (18–26°C), although shallow bays can climb into the low 80s°F (27–28°C) on hot, calm days. In autumn the surface cools again into the 50s–60s°F (10–16°C) before turning to near-freezing in late season. Deeper water remains noticeably colder year‑round, and thermal stratification can produce sharp temperature changes with depth that affect comfort and safety.
Swimming at Stonecoal Reservoir is not promoted with formal public beaches or lifeguarded swimming areas, so swimming is generally discouraged or restricted by local managers for safety and water-quality reasons. The combination of cold, deep water, sudden drop-offs, boat traffic and limited shore facilities increases risk of cold‑water shock and drowning, and some operational rules may limit unregulated swimming. Visitors should heed posted signs and contact local authorities or land managers for current rules and conditions before entering the water.