Lake Pontchartrain — Current Water Temperature, Annual Trends and Forecast
This page provides information on the current water temperature in Lake Pontchartrain, trends, monthly ranges and the forecast for the coming days.
Current Water Temperature
Water Temperature in Lake Pontchartrain today is 28.5°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 |
|---|---|---|---|
| JUN 23 | 26.5°C | 27.0°C | |
| JUN 24 | 26.5°C | 27.0°C | |
| JUN 25 | 26.5°C | 27.0°C | |
| JUN 26 | 26.6°C | 27.0°C | |
| JUN 27 | 26.8°C | 27.0°C | |
| JUN 28 | 28.6°C | 27.0°C | |
| JUN 29 | 28.6°C | 27.0°C | |
| JUN 30 | 28.5°C | 27.0°C | |
| JUL 1 | 26.7°C | 28.4°C | |
| JUL 2 | 26.7°C | 28.3°C | |
| JUL 3 | 26.7°C | 28.2°C | |
| JUL 4 | 26.7°C | 28.1°C | |
| JUL 5 | 26.7°C | 28.1°C | |
| JUL 6 | 26.7°C | 28.0°C | |
| JUL 7 | 26.7°C | 27.9°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 | 15°C | 21°C |
| February | 8°C | 13°C | 19°C |
| March | 11°C | 16°C | 21°C |
| April | 17°C | 20°C | 23°C |
| May | 20°C | 24°C | 28°C |
| June | 24°C | 27°C | 30°C |
| July | 24°C | 27°C | 29°C |
| August | 23°C | 26°C | 29°C |
| September | 23°C | 26°C | 28°C |
| October | 22°C | 25°C | 27°C |
| November | 16°C | 20°C | 24°C |
| December | 12°C | 14°C | 17°C |
Lake Pontchartrain: Water Temperature by Location
Lake Pontchartrain: Weather Forecast
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July 4
July 5
Location & Local Information
Lake Pontchartrain is a large, shallow estuary north of New Orleans whose water temperature varies with the seasons. In winter the surface typically runs about 45–60°F (7–16°C), with the coldest spells occasionally dipping into the mid‑40s (around 7°C). Spring waters warm to roughly 60–75°F (16–24°C) as air temperatures rise. Summer brings the warmest conditions, often 80–90°F (27–32°C) in surface shoals and sometimes higher in sheltered shallows. In autumn the lake cools gradually, generally ranging from about 65–80°F (18–27°C). Shallow areas and tidal influences can create localized temperature differences, and sudden weather or freshwater runoff can alter readings quickly.
Swimming in Lake Pontchartrain is possible and commonly practiced in designated recreational areas, but it is not uniformly recommended everywhere. Because the lake is brackish, subject to stormwater runoff, and influenced by boat traffic and occasional algal blooms, authorities sometimes issue advisories for elevated bacteria or toxins after heavy rains or unusual conditions. For safety, swimmers should choose monitored beaches or parks, heed local water‑quality advisories, and be mindful of currents, boat traffic and submerged hazards. In summer the warm temperatures make casual swimming appealing, while cooler months reduce the likelihood of comfortable open‑water recreation.