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

TIDE TIMES for Tuesday, August 4, 2026
The tide is currently falling in Southwest Pass, Mississippi River, LA.
Next low tide : in 4h 00m at 1:02 pm (0.4 ft)
Next high tide (tomorrow) : 2:53 am (1.2 ft)
Sunset today : 7:47 pm
Sunrise tomorrow : 6:20 am
Moon phase : Third Quarter (65% illuminated)
Tide Station Location : Station #8760959
Common Questions About Tides

Southwest Pass, Mississippi River, LA Tides - Mar 1954

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon6:271.13:36-0.66:235:57Waning Crescent1Mon
2Tue7:351.14:16-0.56:225:57Waning Crescent2Tue
3Wed8:460.94:52-0.46:215:58New Moon3Wed
4Thu10:070.85:21-0.26:195:59New Moon4Thu
5Fri10:470.211:590.55:260.13:210.16:185:59New Moon5Fri
6Sat10:050.54:270.45:36-0.16:176:00Waxing Crescent6Sat
7Sun10:190.87:34-0.36:166:01Waxing Crescent7Sun
8Mon10:571.19:23-0.46:156:01Waxing Crescent8Mon
9Tue11:461.310:55-0.66:146:02Waxing Crescent9Tue
10Wed12:421.36:136:02First Quarter10Wed
11Thu1:471.312:13-0.66:126:03First Quarter11Thu
12Fri3:001.31:19-0.66:116:04First Quarter12Fri
13Sat4:201.22:16-0.56:096:04Waxing Gibbous13Sat
14Sun5:421.13:05-0.46:086:05Waxing Gibbous14Sun
15Mon6:590.93:42-0.26:076:05Waxing Gibbous15Mon
16Tue8:090.84:070.06:066:06Waxing Gibbous16Tue
17Wed9:190.74:130.16:056:07Full Moon17Wed
18Thu10:090.510:410.63:530.33:030.36:046:07Full Moon18Thu
19Fri9:350.63:000.44:260.26:026:08Full Moon19Fri
20Sat9:320.85:340.16:016:08Full Moon20Sat
21Sun9:450.96:380.06:006:09Waning Gibbous21Sun
22Mon10:081.17:45-0.15:596:10Waning Gibbous22Mon
23Tue10:401.28:57-0.15:586:10Waning Gibbous23Tue
24Wed11:191.310:11-0.25:576:11Waning Gibbous24Wed
25Thu12:051.311:20-0.25:556:11Third Quarter25Thu
26Fri12:591.35:546:12Third Quarter26Fri
27Sat2:021.312:19-0.35:536:12Third Quarter27Sat
28Sun3:151.31:12-0.35:526:13Third Quarter28Sun
29Mon4:401.21:58-0.25:516:13Waning Crescent29Mon
30Tue6:171.12:40-0.15:506:14Waning Crescent30Tue
31Wed8:051.03:150.15:486:15Waning Crescent31Wed
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 7:57 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 transitional phase. Tonight's moon is 65% 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 shifting between spring and neap.

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 Third Quarter (65% illuminated). This places Southwest Pass, Mississippi River, LA in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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