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

TIDE TIMES for Sunday, July 12, 2026
The tide is currently rising in Southwest Pass, Mississippi River, LA.
Next low tide (tomorrow) : 7:03 pm (-0.8 ft)
Next high tide (tomorrow) : in 14h 07m at 8:31 am (2.0 ft)
Sunset today : 7:59 pm
Sunrise tomorrow : 6:07 am
Moon phase : Waning Crescent (4% illuminated)
Tide Station Location : Station #8760959
Common Questions About Tides

Southwest Pass, Mississippi River, LA Tides - Sep 1982

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed8:321.76:100.36:357:19Full Moon1Wed
2Thu9:181.66:350.46:357:18Full Moon2Thu
3Fri10:031.66:520.56:367:17Full Moon3Fri
4Sat10:481.46:560.76:367:16Full Moon4Sat
5Sun11:401.36:390.86:377:15Waning Gibbous5Sun
6Mon1:081.012:541.15:240.95:411.06:387:14Waning Gibbous6Mon
7Tue12:481.28:090.86:387:12Waning Gibbous7Tue
8Wed1:011.410:390.66:397:11Waning Gibbous8Wed
9Thu1:331.612:150.46:397:10Third Quarter9Thu
10Fri2:211.81:240.26:407:09Third Quarter10Fri
11Sat3:211.92:250.16:407:08Third Quarter11Sat
12Sun4:322.03:230.06:417:06Waning Crescent12Sun
13Mon5:502.04:170.16:417:05Waning Crescent13Mon
14Tue7:082.05:080.26:427:04Waning Crescent14Tue
15Wed8:221.95:530.46:427:03Waning Crescent15Wed
16Thu9:321.76:280.66:437:02New Moon16Thu
17Fri10:411.56:430.86:437:00New Moon17Fri
18Sat11:581.411:311.16:091.16:446:59New Moon18Sat
19Sun11:221.45:320.96:446:58Waxing Crescent19Sun
20Mon11:421.57:280.86:456:57Waxing Crescent20Mon
21Tue9:140.76:456:56Waxing Crescent21Tue
22Wed12:131.710:440.66:466:54Waxing Crescent22Wed
23Thu12:501.711:570.56:466:53First Quarter23Thu
24Fri1:341.812:580.56:476:52First Quarter24Fri
25Sat2:261.81:530.46:476:51First Quarter25Sat
26Sun3:301.82:420.46:486:50First Quarter26Sun
27Mon4:461.83:270.56:486:48Waxing Gibbous27Mon
28Tue6:041.74:060.56:496:47Waxing Gibbous28Tue
29Wed7:171.74:380.66:496:46Waxing Gibbous29Wed
30Thu8:231.65:010.76:506:45Waxing Gibbous30Thu
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8760959)

Common Questions About Southwest Pass, Mississippi River, LA Tides

Show All
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 1:47 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 4% 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 Crescent (4% 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