Tides Today & Tomorrow in Southwest Pass, Mississippi River, LA

TIDE TIMES for Saturday, July 4, 2026
The tide is currently rising in Southwest Pass, Mississippi River, LA.
Next low tide : 9:22 pm (0.1 ft)
Next high tide : in 11h 21m at 11:47 am (1.2 ft)
Sunset today : 8:00 pm
Sunrise tomorrow : 6:04 am
Moon phase : Waning Gibbous (80% illuminated)
Tide Station Location : Station #8760959
Common Questions About Tides

Southwest Pass, Mississippi River, LA Tides - Dec 1996

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun11:221.19:370.26:344:59Third Quarter1Sun
2Mon10:420.99:520.36:344:59Third Quarter2Mon
3Tue8:060.89:430.46:354:59Third Quarter3Tue
4Wed6:440.98:430.56:364:59Third Quarter4Wed
5Thu6:201.03:520.46:375:00Waning Crescent5Thu
6Fri6:251.13:240.26:375:00Waning Crescent6Fri
7Sat6:451.33:440.06:385:00Waning Crescent7Sat
8Sun7:151.44:16-0.26:395:00Waning Crescent8Sun
9Mon7:501.54:55-0.36:395:00New Moon9Mon
10Tue8:301.55:39-0.46:405:00New Moon10Tue
11Wed9:121.66:27-0.56:415:01New Moon11Wed
12Thu9:561.57:17-0.56:415:01Waxing Crescent12Thu
13Fri10:391.48:06-0.46:425:01Waxing Crescent13Fri
14Sat11:171.18:53-0.36:435:02Waxing Crescent14Sat
15Sun11:380.99:30-0.16:435:02First Quarter15Sun
16Mon9:240.69:450.16:445:02First Quarter16Mon
17Tue6:260.69:040.36:455:03First Quarter17Tue
18Wed5:420.83:200.26:455:03First Quarter18Wed
19Thu5:441.03:010.06:465:04Waxing Gibbous19Thu
20Fri6:071.13:30-0.36:465:04Waxing Gibbous20Fri
21Sat6:391.24:05-0.46:475:05Waxing Gibbous21Sat
22Sun7:141.24:42-0.56:475:05Waxing Gibbous22Sun
23Mon7:501.25:17-0.56:485:06Full Moon23Mon
24Tue8:241.25:51-0.56:485:06Full Moon24Tue
25Wed8:581.26:23-0.56:495:07Full Moon25Wed
26Thu9:291.16:53-0.46:495:07Full Moon26Thu
27Fri9:591.07:21-0.46:495:08Waning Gibbous27Fri
28Sat10:240.97:45-0.36:505:09Waning Gibbous28Sat
29Sun10:430.78:02-0.26:505:09Waning Gibbous29Sun
30Mon10:360.58:06-0.16:505:10Waning Gibbous30Mon
31Tue9:020.47:490.06:515:10Third Quarter31Tue
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8760959)

Common Questions About Southwest Pass, Mississippi River, LA Tides

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What time does the tide turn (slack tide) in Southwest Pass, Mississippi River, LA today?

Slack tide in Southwest Pass, Mississippi River, LA is approximately 4:34 pm — midway between the next high and low tide, when tidal current is weakest. This is the preferred window for boat crossings, underwater visibility, and fishing in areas with strong currents.

Is this week a spring tide or neap tide in Southwest Pass, Mississippi River, LA?

Southwest Pass, Mississippi River, LA is currently in a spring phase. Tonight's moon is 80% illuminated. Spring tides (largest swings) occur near new and full moons; neap tides (smallest swings) occur near first and third quarter moons. Tidal ranges this week are near their weekly maximum.

What datum are Southwest Pass, Mississippi River, LA tide heights measured from?

Tide heights on this page are measured from Mean Lower Low Water (MLLW), the U.S. NOAA standard. A height of 0 ft represents the 19-year average of each day's lower low tide. Negative values indicate a "minus tide" — water levels below that long-term reference.

What factors can affect the tide predictions for Southwest Pass, Mississippi River, LA?

Tide predictions for Southwest Pass, Mississippi River, LA come from NOAA's harmonic analysis and are typically accurate within about ±10 minutes on timing and ±0.5 ft on height. Actual water levels can deviate further due to sustained winds, atmospheric pressure changes, river flow, and storm surge. During major weather events, be sure to check US Harbors weather pages for factors that could impact tidal predictions.

Which NOAA station provides tide data for Southwest Pass, Mississippi River, LA?

Tide data for Southwest Pass, Mississippi River, LA is sourced from NOAA Station #8760959. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8760959.

What is the moon phase in Southwest Pass, Mississippi River, LA tonight?

Tonight the moon over Southwest Pass, Mississippi River, LA is Waning Gibbous (80% illuminated). This places Southwest Pass, Mississippi River, LA in a spring tide cycle, so tidal ranges are near their weekly maximum this week.

US Harbors Tidal Data

The data in our tide charts, tide tables, and tide graphs is provided by NOAA and others. These predictions are derived mathematically from numerous inputs, including data from historical tide stations and nearby locations where sensors are actively recording. As shown in the tide graph at the top of this page, “Predicted” tides (blue) are what forecasting models expect to happen. “Observed” tides (red) are those recorded by local sensors in real time, overlaid on the predictions for direct comparison. We display Observed water levels for a select group of harbors including Portland, Maine, where a physical sensor monitors water levels in real time.

LEARN MORE ABOUT OUR TIDE DATA