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

TIDE TIMES for Tuesday, June 30, 2026
The tide is currently rising in Southwest Pass, Mississippi River, LA.
Next low tide : 8:02 pm (-0.4 ft)
Next high tide : in 3h 26m at 9:37 am (1.6 ft)
Sunset today : 8:00 pm
Sunrise tomorrow : 6:02 am
Moon phase : Full Moon (100% illuminated)
Tide Station Location : Station #8760959
Common Questions About Tides

Southwest Pass, Mississippi River, LA Tides - Oct 2002

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue4:252.03:080.36:506:43Waning Crescent1Tue
2Wed5:502.03:570.36:516:42Waning Crescent2Wed
3Thu7:161.94:420.56:516:41Waning Crescent3Thu
4Fri8:441.85:200.76:526:40Waning Crescent4Fri
5Sat10:201.611:011.15:411.06:526:39New Moon5Sat
6Sun12:271.43:400.94:571.36:536:38New Moon6Sun
7Mon10:081.75:410.76:546:36New Moon7Mon
8Tue10:431.97:210.56:546:35Waxing Crescent8Tue
9Wed11:272.18:540.36:556:34Waxing Crescent9Wed
10Thu10:200.26:556:33Waxing Crescent10Thu
11Fri12:182.211:370.26:566:32First Quarter11Fri
12Sat1:122.212:470.26:576:31First Quarter12Sat
13Sun2:122.11:470.36:576:30First Quarter13Sun
14Mon3:201.92:380.46:586:29First Quarter14Mon
15Tue4:391.83:180.56:586:28Waxing Gibbous15Tue
16Wed6:091.63:470.76:596:27Waxing Gibbous16Wed
17Thu7:401.54:000.97:006:26Waxing Gibbous17Thu
18Fri9:081.410:351.23:501.07:006:25Waxing Gibbous18Fri
19Sat10:471.29:491.33:311.03:031.17:016:24Full Moon19Sat
20Sun9:381.54:460.97:016:23Full Moon20Sun
21Mon9:461.65:450.87:026:22Full Moon21Mon
22Tue10:051.76:390.67:036:21Full Moon22Tue
23Wed10:311.97:330.57:036:20Waning Gibbous23Wed
24Thu11:041.98:290.47:046:19Waning Gibbous24Thu
25Fri11:422.09:300.47:056:18Waning Gibbous25Fri
26Sat10:330.37:056:17Waning Gibbous26Sat
27Sun12:272.010:360.26:065:16Third Quarter27Sun
28Mon12:192.011:350.26:075:15Third Quarter28Mon
29Tue1:201.912:290.26:085:14Third Quarter29Tue
30Wed2:351.81:170.36:085:13Third Quarter30Wed
31Thu4:151.61:570.56:095:13Waning Crescent31Thu
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 2:49 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 100% 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 Full Moon (100% 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