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

TIDE TIMES for Sunday, August 9, 2026
The tide is currently rising in Southwest Pass, Mississippi River, LA.
Next low tide (tomorrow) : 6:01 pm (-0.5 ft)
Next high tide (tomorrow) : in 8h 54m at 7:36 am (2.0 ft)
Sunset today : 7:43 pm
Sunrise tomorrow : 6:23 am
Moon phase : Waning Crescent (13% illuminated)
Tide Station Location : Station #8760959
Common Questions About Tides

Southwest Pass, Mississippi River, LA Tides - Oct 1944

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sun10:371.611:171.15:521.06:506:43Full Moon1Sun
2Mon12:341.43:540.95:151.26:516:42Full Moon2Mon
3Tue10:311.65:510.86:516:41Full Moon3Tue
4Wed11:041.87:320.66:526:40Waning Gibbous4Wed
5Thu11:462.09:070.56:536:39Waning Gibbous5Thu
6Fri10:340.46:536:37Waning Gibbous6Fri
7Sat12:342.011:500.36:546:36Third Quarter7Sat
8Sun1:252.012:550.46:546:35Third Quarter8Sun
9Mon2:221.91:500.46:556:34Third Quarter9Mon
10Tue3:271.82:370.56:556:33Third Quarter10Tue
11Wed4:451.73:150.66:566:32Waning Crescent11Wed
12Thu6:151.63:440.76:576:31Waning Crescent12Thu
13Fri7:431.54:010.96:576:30Waning Crescent13Fri
14Sat9:041.410:531.24:011.06:586:29Waning Crescent14Sat
15Sun10:261.310:071.33:091.13:351.16:586:28New Moon15Sun
16Mon12:151.24:261.02:221.26:596:27New Moon16Mon
17Tue10:011.55:280.87:006:26New Moon17Tue
18Wed10:201.76:270.77:006:24New Moon18Wed
19Thu10:461.87:250.67:016:23Waxing Crescent19Thu
20Fri11:181.98:270.57:026:22Waxing Crescent20Fri
21Sat11:561.99:320.57:026:22Waxing Crescent21Sat
22Sun10:390.47:036:21Waxing Crescent22Sun
23Mon12:412.011:430.37:046:20First Quarter23Mon
24Tue1:331.912:430.37:046:19First Quarter24Tue
25Wed2:371.91:380.37:056:18First Quarter25Wed
26Thu3:581.82:270.47:066:17Waxing Gibbous26Thu
27Fri5:491.63:080.67:066:16Waxing Gibbous27Fri
28Sat8:011.410:421.13:340.87:076:15Waxing Gibbous28Sat
29Sun10:251.39:301.32:481.03:231.17:086:14Waxing Gibbous29Sun
30Mon9:101.54:240.77:086:13Full Moon30Mon
31Tue9:241.75:400.57:096:13Full Moon31Tue
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 12:48 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 13% 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 (13% 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