Lake Maurepas — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Maurepas, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Maurepas today is 28.4°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 | 28.7°C | 26.5°C | |
| AUG 5 | 28.5°C | 26.5°C | |
| AUG 6 | 28.6°C | 26.5°C | |
| AUG 7 | 28.3°C | 26.5°C | |
| AUG 8 | 28.3°C | 26.5°C | |
| AUG 9 | 28.3°C | 26.5°C | |
| AUG 10 | 28.4°C | 26.5°C | |
| AUG 11 | 28.4°C | 26.5°C | |
| AUG 12 | 26.5°C | 28.3°C | |
| AUG 13 | 26.5°C | 28.2°C | |
| AUG 14 | 26.5°C | 28.1°C | |
| AUG 15 | 26.5°C | 28.0°C | |
| AUG 16 | 26.5°C | 27.9°C | |
| AUG 17 | 26.5°C | 27.8°C | |
| AUG 18 | 26.5°C | 27.7°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 | 9°C | 14°C | 19°C |
| February | 8°C | 13°C | 19°C |
| March | 13°C | 17°C | 21°C |
| April | 17°C | 20°C | 24°C |
| May | 19°C | 23°C | 27°C |
| June | 24°C | 27°C | 30°C |
| July | 24°C | 27°C | 30°C |
| August | 24°C | 27°C | 29°C |
| September | 24°C | 26°C | 29°C |
| October | 23°C | 25°C | 27°C |
| November | 16°C | 20°C | 23°C |
| December | 12°C | 16°C | 19°C |
Lake Maurepas: Water Temperature by Location
Lake Maurepas: Weather Forecast
August 12
August 13
August 14
August 15
Location & Local Information
Lake Maurepas is a shallow, brackish coastal lake west of Lake Pontchartrain, so its surface temperatures follow Gulf Coast seasonal patterns and can change relatively quickly. In winter months the water commonly drops into the 50s °F (about 10–15 °C), with cold snaps pushing temperatures toward the low 50s °F (around 10 °C). Spring brings steady warming into the mid-60s to mid-70s °F (about 18–24 °C), and summer is when the lake is warmest, often reaching the upper 70s into the mid-80s °F (roughly 26–30 °C) and occasionally touching the low 90s °F (about 32 °C) during heat waves. Fall temperatures generally decline from the 70s °F (around 21–26 °C) back toward winter levels.
Swimming in Lake Maurepas is not broadly prohibited, but it is less common than in managed freshwater or beach settings because of several practical and safety concerns. The water is often murky and brackish, shoreline conditions are marshy with submerged vegetation and hazards, boat traffic and tidal flows can create risks, and local wildlife such as alligators and biting insects occur. Water quality can vary and occasional advisories may be issued, so many people prefer boating, fishing or wading in designated areas rather than open-water swimming. If choosing to swim, do so in warm months when temperatures are most comfortable and after checking current conditions and advisories.