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

TIDE TIMES for Wednesday, July 1, 2026
The tide is currently rising in Southwest Pass, Mississippi River, LA.
Next low tide : 8:33 pm (-0.3 ft)
Next high tide : in 7h 25m at 10:14 am (1.6 ft)
Sunset today : 8:00 pm
Sunrise tomorrow : 6:02 am
Moon phase : Full Moon (97% illuminated)
Tide Station Location : Station #8760959
Common Questions About Tides

Southwest Pass, Mississippi River, LA Tides - Sep 2001

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat9:031.66:300.46:357:19Full Moon1Sat
2Sun9:461.56:500.56:367:18Full Moon2Sun
3Mon10:271.56:570.66:367:17Full Moon3Mon
4Tue11:071.36:440.86:377:15Full Moon4Tue
5Wed11:531.26:060.96:377:14Waning Gibbous5Wed
6Thu12:451.11:001.06:100.94:481.06:387:13Waning Gibbous6Thu
7Fri12:431.28:400.86:387:12Waning Gibbous7Fri
8Sat1:031.411:000.76:397:11Waning Gibbous8Sat
9Sun1:361.612:220.56:397:10Third Quarter9Sun
10Mon2:211.71:230.36:407:08Third Quarter10Mon
11Tue3:191.82:190.26:407:07Third Quarter11Tue
12Wed4:291.93:140.16:417:06Waning Crescent12Wed
13Thu5:452.04:080.16:417:05Waning Crescent13Thu
14Fri7:022.05:000.16:427:04Waning Crescent14Fri
15Sat8:181.95:500.36:427:02Waning Crescent15Sat
16Sun9:331.86:340.56:437:01New Moon16Sun
17Mon10:521.67:030.86:437:00New Moon17Mon
18Tue12:570.912:291.43:040.96:381.16:446:59New Moon18Tue
19Wed11:121.45:570.86:446:57Waxing Crescent19Wed
20Thu11:451.78:070.76:456:56Waxing Crescent20Thu
21Fri10:010.56:456:55Waxing Crescent21Fri
22Sat12:291.811:320.46:466:54First Quarter22Sat
23Sun1:181.912:440.36:466:53First Quarter23Sun
24Mon2:131.91:440.36:476:51First Quarter24Mon
25Tue3:141.92:360.46:476:50First Quarter25Tue
26Wed4:251.83:220.46:486:49Waxing Gibbous26Wed
27Thu5:431.84:020.56:486:48Waxing Gibbous27Thu
28Fri6:591.74:350.66:496:47Waxing Gibbous28Fri
29Sat8:071.65:000.76:496:45Waxing Gibbous29Sat
30Sun9:081.55:110.96:506:44Full Moon30Sun
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 3:23 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 97% 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 (97% 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