Stony Gorge Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Stony Gorge Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Stony Gorge Reservoir today is 28.1°C.
Water Temperature: Daily Trends, Historical Records, and Forecast
✅ As of today, the minimum water temperature is above 82°F (28°C). This is very warm water, which may feel almost hot to most people. Swimming in such conditions is perfect for those seeking relaxation and comfort in the water. These waters are often preferred for relaxation in hot weather, as the water temperature does not cool the body significantly. However, it is important to remember that in such warm waters, caution is necessary, as prolonged exposure without rest can lead to overheating. 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 24 | 27.3°C | 28.1°C | |
| AUG 25 | 27.2°C | 28.1°C | |
| AUG 26 | 27.2°C | 28.1°C | |
| AUG 27 | 27.8°C | 28.1°C | |
| AUG 28 | 28.0°C | 28.1°C | |
| AUG 29 | 28.0°C | 28.1°C | |
| AUG 30 | 28.1°C | 28.1°C | |
| AUG 31 | 28.0°C | 28.1°C | |
| SEP 1 | 26.7°C | 28.0°C | |
| SEP 2 | 26.7°C | 28.0°C | |
| SEP 3 | 26.7°C | 27.9°C | |
| SEP 4 | 26.7°C | 27.8°C | |
| SEP 5 | 26.7°C | 27.8°C | |
| SEP 6 | 26.7°C | 27.7°C | |
| SEP 7 | 26.7°C | 27.6°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 | 5°C | 8°C | 12°C |
| February | 6°C | 9°C | 12°C |
| March | 8°C | 12°C | 17°C |
| April | 12°C | 14°C | 17°C |
| May | 14°C | 20°C | 25°C |
| June | 21°C | 25°C | 28°C |
| July | 24°C | 28°C | 32°C |
| August | 25°C | 28°C | 32°C |
| September | 24°C | 27°C | 29°C |
| October | 17°C | 21°C | 24°C |
| November | 10°C | 15°C | 19°C |
| December | 9°C | 11°C | 14°C |
Stony Gorge Reservoir: Water Temperature by Location
Stony Gorge Reservoir: Weather Forecast
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Location & Local Information
Stony Gorge Reservoir typically exhibits noticeable seasonal changes in water temperature. In summer months surface temperatures often warm to roughly 68–80°F (20–27°C) on sunny days, making the upper layer relatively comfortable for brief swims. During spring and fall the surface usually ranges from about 50–65°F (10–18°C), while winter brings much colder conditions around 40–50°F (4–10°C). Like many reservoirs, Stony Gorge stratifies in warm weather so deeper water remains substantially colder than the surface; swimmers can encounter sudden drops in temperature a few feet down, which increases the risk of cold-water shock.
Swimming at Stony Gorge is generally permitted as part of the reservoir’s recreational use, but it is not a lifeguarded facility and access is governed by local park rules and posted notices. Authorities may close or limit swimming for safety reasons such as low water levels, hazardous submerged obstacles, heavy boat traffic, or water-quality issues like algal blooms. Visitors should check current advisories, stay within designated swim areas if provided, and be mindful of changing temperatures and lack of on-site rescue services when deciding to enter the water.