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

TIDE TIMES for Tuesday, August 4, 2026
The tide is currently rising in Southwest Pass, Mississippi River, LA.
Next low tide : 1:02 pm (0.4 ft)
Next high tide : in 49m at 2:43 am (1.0 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 - Oct 1954

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri10:581.98:460.55:505:44Waxing Crescent1Fri
2Sat11:451.99:580.55:515:43Waxing Crescent2Sat
3Sun11:050.45:515:41First Quarter3Sun
4Mon12:391.912:030.45:525:40First Quarter4Mon
5Tue1:401.912:520.45:525:39First Quarter5Tue
6Wed2:521.91:350.55:535:38First Quarter6Wed
7Thu4:161.82:110.65:535:37Waxing Gibbous7Thu
8Fri5:531.62:400.85:545:36Waxing Gibbous8Fri
9Sat7:421.58:581.22:511.05:555:35Waxing Gibbous9Sat
10Sun9:571.48:031.41:421.02:171.25:555:33Full Moon10Sun
11Mon8:001.63:240.75:565:32Full Moon11Mon
12Tue8:261.94:460.55:565:31Full Moon12Tue
13Wed9:072.16:030.35:575:30Full Moon13Wed
14Thu9:552.37:210.15:585:29Waning Gibbous14Thu
15Fri10:492.38:400.15:585:28Waning Gibbous15Fri
16Sat11:462.29:580.15:595:27Waning Gibbous16Sat
17Sun11:100.15:595:26Third Quarter17Sun
18Mon12:472.112:130.36:005:25Third Quarter18Mon
19Tue1:541.91:040.46:015:24Third Quarter19Tue
20Wed3:111.71:400.76:015:23Waning Crescent20Wed
21Thu5:021.410:271.21:520.96:025:22Waning Crescent21Thu
22Fri7:331.38:161.312:511.21:221.16:035:21Waning Crescent22Fri
23Sat7:381.42:441.06:035:20Waning Crescent23Sat
24Sun7:361.63:420.86:045:19New Moon24Sun
25Mon7:491.74:270.66:055:18New Moon25Mon
26Tue8:101.85:080.56:055:17New Moon26Tue
27Wed8:371.95:500.46:065:16New Moon27Wed
28Thu9:091.96:340.36:075:16New Moon28Thu
29Fri9:452.07:230.36:075:15Waxing Crescent29Fri
30Sat10:252.08:180.36:085:14Waxing Crescent30Sat
31Sun11:081.99:130.36:095:13Waxing Crescent31Sun
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 7:52 am — 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