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

TIDE TIMES for Sunday, August 2, 2026
The tide is currently falling in Southwest Pass, Mississippi River, LA.
Next low tide : in 1h 28m at 7:21 pm (0.5 ft)
Next high tide (tomorrow) : 3:27 am (0.8 ft)
Sunset today : 7:48 pm
Sunrise tomorrow : 6:19 am
Moon phase : Waning Gibbous (84% illuminated)
Tide Station Location : Station #8760959
Common Questions About Tides

Southwest Pass, Mississippi River, LA Tides - Sep 1957

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun3:041.72:220.26:357:19First Quarter1Sun
2Mon4:101.73:140.26:357:18First Quarter2Mon
3Tue5:211.73:580.26:367:17Waxing Gibbous3Tue
4Wed6:301.64:360.36:377:16Waxing Gibbous4Wed
5Thu7:321.65:060.46:377:15Waxing Gibbous5Thu
6Fri8:281.55:270.66:387:14Waxing Gibbous6Fri
7Sat9:201.45:370.76:387:12Full Moon7Sat
8Sun10:091.35:310.86:397:11Full Moon8Sun
9Mon12:041.011:201.12:510.95:050.96:397:10Full Moon9Mon
10Tue12:021.14:380.94:141.06:407:09Full Moon10Tue
11Wed11:281.46:070.86:407:08Waning Gibbous11Wed
12Thu11:541.57:370.86:417:06Waning Gibbous12Thu
13Fri9:160.76:417:05Waning Gibbous13Fri
14Sat12:281.610:520.66:427:04Waning Gibbous14Sat
15Sun1:111.712:060.56:427:03Third Quarter15Sun
16Mon2:021.81:070.46:437:02Third Quarter16Mon
17Tue3:041.82:010.36:437:00Third Quarter17Tue
18Wed4:171.82:510.36:446:59Third Quarter18Wed
19Thu5:391.83:390.46:446:58Waning Crescent19Thu
20Fri7:051.84:220.56:456:57Waning Crescent20Fri
21Sat8:341.74:580.76:456:55Waning Crescent21Sat
22Sun10:071.510:491.15:160.96:466:54New Moon22Sun
23Mon12:011.43:290.94:451.26:466:53New Moon23Mon
24Tue10:131.55:190.76:476:52New Moon24Tue
25Wed10:441.86:540.66:476:51Waxing Crescent25Wed
26Thu11:271.98:250.56:486:49Waxing Crescent26Thu
27Fri9:540.46:486:48Waxing Crescent27Fri
28Sat12:142.011:160.46:496:47Waxing Crescent28Sat
29Sun1:062.012:270.46:496:46First Quarter29Sun
30Mon2:021.91:270.46:506:45First Quarter30Mon
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 11:24 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 84% 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 (84% 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