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 1h 47m 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 - Apr 1996

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Mon10:010.69:200.83:060.41:480.55:466:16Waxing Gibbous1Mon
2Tue9:160.710:580.72:510.53:130.45:456:16Full Moon2Tue
3Wed9:070.82:070.64:220.35:446:17Full Moon3Wed
4Thu9:171.05:280.25:436:17Full Moon4Thu
5Fri9:391.26:360.15:426:18Full Moon5Fri
6Sat10:101.37:470.05:416:18Waning Gibbous6Sat
7Sun11:481.410:02-0.16:397:19Waning Gibbous7Sun
8Mon12:321.511:15-0.26:387:20Waning Gibbous8Mon
9Tue1:221.56:377:20Third Quarter9Tue
10Wed2:201.412:23-0.26:367:21Third Quarter10Wed
11Thu3:301.31:24-0.16:357:21Third Quarter11Thu
12Fri5:061.12:160.06:347:22Waning Crescent12Fri
13Sat7:211.02:580.26:337:22Waning Crescent13Sat
14Sun11:180.79:440.83:220.42:450.76:327:23Waning Crescent14Sun
15Mon9:560.83:150.64:170.56:317:24Waning Crescent15Mon
16Tue9:291.05:230.36:307:24New Moon16Tue
17Wed9:331.26:190.26:297:25New Moon17Wed
18Thu9:531.37:120.16:287:25New Moon18Thu
19Fri10:201.48:020.06:277:26New Moon19Fri
20Sat10:511.58:530.06:257:27Waxing Crescent20Sat
21Sun11:231.59:440.06:247:27Waxing Crescent21Sun
22Mon11:581.510:360.16:247:28Waxing Crescent22Mon
23Tue12:351.411:280.16:237:28Waxing Crescent23Tue
24Wed1:131.36:227:29First Quarter24Wed
25Thu1:541.212:160.26:217:29First Quarter25Thu
26Fri2:361.112:560.36:207:30First Quarter26Fri
27Sat3:251.01:250.46:197:31First Quarter27Sat
28Sun10:470.87:030.81:380.52:590.86:187:31Waxing Gibbous28Sun
29Mon9:200.91:280.63:460.66:177:32Waxing Gibbous29Mon
30Tue8:511.04:300.46:167:33Waxing Gibbous30Tue
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