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

TIDE TIMES for Thursday, July 16, 2026
The tide is currently rising in Southwest Pass, Mississippi River, LA.
Next low tide : 9:21 pm (-0.2 ft)
Next high tide : in 10h 41m at 11:16 am (1.6 ft)
Sunset today : 7:57 pm
Sunrise tomorrow : 6:09 am
Moon phase : Waxing Crescent (7% illuminated)
Tide Station Location : Station #8760959
Common Questions About Tides

Southwest Pass, Mississippi River, LA Tides - May 2070

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu12:451.411:280.16:157:33Third Quarter1Thu
2Fri1:251.36:147:34Third Quarter2Fri
3Sat2:061.212:080.26:147:34Third Quarter3Sat
4Sun2:481.012:400.36:137:35Third Quarter4Sun
5Mon10:290.96:100.81:000.52:470.86:127:36Waning Crescent5Mon
6Tue8:570.912:590.63:330.66:117:36Waning Crescent6Tue
7Wed8:271.14:220.36:117:37Waning Crescent7Wed
8Thu8:271.35:140.16:107:38Waning Crescent8Thu
9Fri8:471.56:09-0.16:097:38New Moon9Fri
10Sat9:191.77:07-0.26:097:39New Moon10Sat
11Sun9:591.88:06-0.36:087:39New Moon11Sun
12Mon10:431.89:07-0.36:077:40Waxing Crescent12Mon
13Tue11:291.810:06-0.26:077:41Waxing Crescent13Tue
14Wed12:141.611:00-0.16:067:41Waxing Crescent14Wed
15Thu12:541.511:450.16:057:42First Quarter15Thu
16Fri1:191.26:057:43First Quarter16Fri
17Sat12:301.012:110.36:047:43First Quarter17Sat
18Sun9:420.912:060.510:420.66:047:44First Quarter18Sun
19Mon8:241.04:570.56:037:44Waxing Gibbous19Mon
20Tue8:001.15:050.36:037:45Waxing Gibbous20Tue
21Wed8:021.35:300.26:027:46Waxing Gibbous21Wed
22Thu8:171.45:570.16:027:46Waxing Gibbous22Thu
23Fri8:381.56:270.06:027:47Full Moon23Fri
24Sat9:041.56:59-0.16:017:47Full Moon24Sat
25Sun9:321.57:32-0.16:017:48Full Moon25Sun
26Mon10:021.68:07-0.16:007:48Full Moon26Mon
27Tue10:331.68:42-0.16:007:49Waning Gibbous27Tue
28Wed11:051.59:170.06:007:50Waning Gibbous28Wed
29Thu11:371.49:490.06:007:50Waning Gibbous29Thu
30Fri12:071.310:170.15:597:51Waning Gibbous30Fri
31Sat12:301.210:380.25:597:51Third Quarter31Sat
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 4:18 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 7% 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 Waxing Crescent (7% 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