Rayburn Lake — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Rayburn Lake, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Rayburn Lake today is 32.2°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 4 | 32.4°C | 28.9°C | |
| AUG 5 | 32.4°C | 28.9°C | |
| AUG 6 | 32.3°C | 28.9°C | |
| AUG 7 | 32.3°C | 28.9°C | |
| AUG 8 | 32.3°C | 28.9°C | |
| AUG 9 | 32.3°C | 28.9°C | |
| AUG 10 | 32.3°C | 28.9°C | |
| AUG 11 | 32.2°C | 28.9°C | |
| AUG 12 | 28.9°C | 32.0°C | |
| AUG 13 | 28.9°C | 31.9°C | |
| AUG 14 | 28.9°C | 31.7°C | |
| AUG 15 | 28.9°C | 31.5°C | |
| AUG 16 | 28.9°C | 31.4°C | |
| AUG 17 | 28.9°C | 31.2°C | |
| AUG 18 | 28.9°C | 31.0°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 | 7°C | 13°C | 20°C |
| February | 8°C | 14°C | 20°C |
| March | 13°C | 18°C | 24°C |
| April | 16°C | 22°C | 28°C |
| May | 20°C | 25°C | 29°C |
| June | 24°C | 27°C | 30°C |
| July | 26°C | 30°C | 34°C |
| August | 25°C | 29°C | 33°C |
| September | 26°C | 28°C | 31°C |
| October | 23°C | 27°C | 31°C |
| November | 16°C | 20°C | 23°C |
| December | 10°C | 16°C | 22°C |
Rayburn Lake: Water Temperature by Location
Rayburn Lake: Weather Forecast
August 12
August 13
August 14
August 15
Location & Local Information
Sam Rayburn Reservoir in southeast Texas experiences noticeable seasonal swings in surface water temperature. In winter months the lake commonly ranges from about 45–55°F (7–13°C) at the surface, while spring sees a rise to roughly 55–70°F (13–21°C) as air temperatures warm. Summer surface temperatures frequently reach 75–90°F (24–32°C), and in late summer some shallow coves can warm slightly higher on hot, calm days. Fall temperatures typically fall back into a 60–75°F (16–24°C) band. These are general surface ranges; deeper water stays cooler and conditions vary day to day with weather, wind and reservoir levels.
Swimming is allowed in and around Sam Rayburn, and many visitors swim from shore, docks or boats, but there are few lifeguarded beaches and no broad prohibition. Recreational use is common, yet swimmers should be cautious because of boat traffic, sudden drop-offs, submerged hazards and variable currents near inlets. Water quality advisories or algal blooms can occur occasionally, so checking local park notices is wise. For safety and comfort, choose sheltered coves, wear a life jacket when boating, avoid swimming alone, and be mindful that colder seasons produce brisk water that can cause rapid heat loss and increased risk of cold-water shock.