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

TIDE TIMES for Saturday, June 20, 2026
The tide is currently rising in Southwest Pass, Mississippi River, LA.
Next low tide : 10:32 pm (0.3 ft)
Next high tide : in 6h 45m at 12:51 pm (1.0 ft)
Sunset today : 7:59 pm
Sunrise tomorrow : 5:59 am
Moon phase : First Quarter (38% illuminated)
Tide Station Location : Station #8760959
Common Questions About Tides

Southwest Pass, Mississippi River, LA Tides - May 2015

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri8:531.15:110.46:167:33Waxing Gibbous1Fri
2Sat8:591.25:490.36:157:33Full Moon2Sat
3Sun9:161.36:290.26:147:34Full Moon3Sun
4Mon9:411.47:110.16:137:35Full Moon4Mon
5Tue10:101.57:560.06:137:35Full Moon5Tue
6Wed10:441.68:45-0.16:127:36Waning Gibbous6Wed
7Thu11:201.69:37-0.16:117:36Waning Gibbous7Thu
8Fri12:001.610:30-0.16:107:37Waning Gibbous8Fri
9Sat12:421.511:220.06:107:38Third Quarter9Sat
10Sun1:261.46:097:38Third Quarter10Sun
11Mon2:071.212:100.16:087:39Third Quarter11Mon
12Tue1:211.012:470.36:087:40Third Quarter12Tue
13Wed9:430.98:320.71:040.53:350.76:077:40Waning Crescent13Wed
14Thu8:391.012:310.74:140.46:067:41Waning Crescent14Thu
15Fri8:201.25:020.26:067:41Waning Crescent15Fri
16Sat8:291.45:510.06:057:42New Moon16Sat
17Sun8:541.66:41-0.16:057:43New Moon17Sun
18Mon9:281.77:31-0.26:047:43New Moon18Mon
19Tue10:041.78:19-0.26:047:44New Moon19Tue
20Wed10:411.79:05-0.26:037:44Waxing Crescent20Wed
21Thu11:171.69:48-0.16:037:45Waxing Crescent21Thu
22Fri11:511.510:260.06:027:46Waxing Crescent22Fri
23Sat12:191.410:570.26:027:46First Quarter23Sat
24Sun12:361.211:170.36:017:47First Quarter24Sun
25Mon12:181.011:200.46:017:47First Quarter25Mon
26Tue10:210.910:500.56:017:48First Quarter26Tue
27Wed8:400.97:350.66:007:48First Quarter27Wed
28Thu7:571.04:580.46:007:49Waxing Gibbous28Thu
29Fri7:471.15:040.36:007:50Waxing Gibbous29Fri
30Sat7:571.35:280.15:597:50Waxing Gibbous30Sat
31Sun8:171.45:590.05:597:51Waxing Gibbous31Sun
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 5:41 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 transitional phase. Tonight's moon is 38% 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 First Quarter (38% 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