28.9317’ N, 89.4283’ W

Southwest Pass, Mississippi River, LA

88°
H 90°
L 82°
ENE
19mph
High tide
1:01 am

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

TIDE TIMES for Wednesday, September 16, 2026
The tide is currently rising in Southwest Pass, Mississippi River, LA.
Next low tide (tomorrow) : 12:30 pm (0.3 ft)
Next high tide (tomorrow) : in 10h 46m at 1:01 am (1.9 ft)
Sunset today : 7:01 pm
Sunrise tomorrow : 6:43 am
Moon phase : Waxing Crescent (30% illuminated)
Tide Station Location : Station #8760959
Common Questions About Tides

Southwest Pass, Mississippi River, LA Tides - Jun 1871

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu7:041.54:39-0.25:087:00Full Moon1Thu
2Fri7:311.75:34-0.45:087:01Full Moon2Fri
3Sat8:111.96:32-0.65:087:01Full Moon3Sat
4Sun8:572.07:32-0.65:087:02Full Moon4Sun
5Mon9:452.08:31-0.65:077:02Waning Gibbous5Mon
6Tue10:351.99:28-0.45:077:03Waning Gibbous6Tue
7Wed11:211.710:17-0.25:077:03Waning Gibbous7Wed
8Thu12:001.410:530.05:077:04Third Quarter8Thu
9Fri12:181.111:050.25:077:04Third Quarter9Fri
10Sat10:450.910:290.45:077:04Third Quarter10Sat
11Sun7:570.96:220.55:077:05Third Quarter11Sun
12Mon6:501.04:010.35:077:05Waning Crescent12Mon
13Tue6:331.24:110.15:077:06Waning Crescent13Tue
14Wed6:401.34:34-0.15:077:06Waning Crescent14Wed
15Thu6:581.45:02-0.25:077:06Waning Crescent15Thu
16Fri7:231.55:33-0.35:077:07New Moon16Fri
17Sat7:521.66:07-0.35:077:07New Moon17Sat
18Sun8:241.66:43-0.35:087:07New Moon18Sun
19Mon8:581.67:21-0.35:087:07New Moon19Mon
20Tue9:341.67:58-0.35:087:08Waxing Crescent20Tue
21Wed10:091.68:33-0.25:087:08Waxing Crescent21Wed
22Thu10:441.59:06-0.25:087:08Waxing Crescent22Thu
23Fri11:161.39:330.05:097:08Waxing Crescent23Fri
24Sat11:411.19:490.15:097:08First Quarter24Sat
25Sun11:160.99:400.35:097:09First Quarter25Sun
26Mon7:180.87:570.55:097:09First Quarter26Mon
27Tue6:000.92:490.25:107:09Waxing Gibbous27Tue
28Wed5:441.23:13-0.15:107:09Waxing Gibbous28Wed
29Thu5:591.43:56-0.45:107:09Waxing Gibbous29Thu
30Fri6:321.74:46-0.65:117:09Waxing Gibbous30Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8760959)

Common Questions About Southwest Pass, Mississippi River, LA Tides

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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 30% 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 Waxing Crescent (30% 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