Ross Barnett Reservoir — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Ross Barnett Reservoir, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Ross Barnett Reservoir today is 29.9°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 | 30.1°C | 25.1°C | |
| AUG 25 | 30.1°C | 25.1°C | |
| AUG 26 | 30.0°C | 25.1°C | |
| AUG 27 | 30.0°C | 25.1°C | |
| AUG 28 | 29.7°C | 25.1°C | |
| AUG 29 | 29.6°C | 25.1°C | |
| AUG 30 | 29.6°C | 25.1°C | |
| AUG 31 | 29.8°C | 25.1°C | |
| SEP 1 | 26.5°C | 29.7°C | |
| SEP 2 | 26.5°C | 29.6°C | |
| SEP 3 | 26.5°C | 29.4°C | |
| SEP 4 | 26.5°C | 29.2°C | |
| SEP 5 | 26.5°C | 29.1°C | |
| SEP 6 | 26.5°C | 28.9°C | |
| SEP 7 | 26.5°C | 28.7°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 | 6°C | 13°C | 19°C |
| February | 5°C | 11°C | 17°C |
| March | 8°C | 14°C | 21°C |
| April | 12°C | 18°C | 25°C |
| May | 18°C | 23°C | 28°C |
| June | 23°C | 26°C | 28°C |
| July | 23°C | 26°C | 30°C |
| August | 20°C | 25°C | 31°C |
| September | 23°C | 27°C | 30°C |
| October | 23°C | 26°C | 29°C |
| November | 14°C | 19°C | 23°C |
| December | 9°C | 13°C | 16°C |
Ross Barnett Reservoir: Water Temperature by Location
Ross Barnett Reservoir: Weather Forecast
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Location & Local Information
Ross Barnett Reservoir, near Jackson, Mississippi, experiences noticeable seasonal swings in surface water temperature. In winter months surface readings commonly fall into the 40–55°F (4–13°C) range, spring typically warms from about 50–70°F (10–21°C), summer heat often pushes surface temperatures into the 75–90°F (24–32°C) range, and fall sees a gradual decline back toward 60–75°F (16–24°C). Actual temperatures vary with weather, depth, shading and inflow, and short-term heat waves or cold snaps can move these figures a few degrees. Midday surface temperatures in quiet coves tend to be higher than in open, deeper sections.
Swimming in the reservoir is not universally prohibited, and people do swim at public park beaches and designated access points, but it is not primarily managed as a swimming-only facility. Many areas are multi-use — boating, fishing and personal watercraft are common — so strong boat traffic, underwater hazards, changing currents and occasional water-quality issues such as algae or bacterial advisories can make swimming risky in some spots. For safety and comfort, most recreational swimmers prefer the warm summer window when surface temperatures exceed about 75°F (24°C); visitors should heed posted signs, local guidance and current water-quality advisories before entering the water.