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

TIDE TIMES for Friday, July 10, 2026
The tide is currently rising in Southwest Pass, Mississippi River, LA.
Next low tide (tomorrow) : 5:13 pm (-0.7 ft)
Next high tide (tomorrow) : in 9h 34m at 6:35 am (1.8 ft)
Sunset today : 7:59 pm
Sunrise tomorrow : 6:06 am
Moon phase : Waning Crescent (19% illuminated)
Tide Station Location : Station #8760959
Common Questions About Tides

Southwest Pass, Mississippi River, LA Tides - Aug 1985

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu10:001.78:11-0.26:187:49Full Moon1Thu
2Fri10:431.58:380.06:197:48Full Moon2Fri
3Sat11:191.38:500.26:197:47Waning Gibbous3Sat
4Sun11:501.18:350.46:207:47Waning Gibbous4Sun
5Mon12:080.97:370.66:217:46Waning Gibbous5Mon
6Tue4:010.85:210.66:217:45Third Quarter6Tue
7Wed3:141.02:210.46:227:44Third Quarter7Wed
8Thu3:211.22:230.36:227:43Third Quarter8Thu
9Fri3:511.32:540.16:237:43Third Quarter9Fri
10Sat4:341.53:330.06:237:42Third Quarter10Sat
11Sun5:261.64:15-0.16:247:41Waning Crescent11Sun
12Mon6:221.74:58-0.26:247:40Waning Crescent12Mon
13Tue7:181.85:40-0.26:257:39Waning Crescent13Tue
14Wed8:111.86:21-0.26:267:38New Moon14Wed
15Thu9:021.87:01-0.26:267:37New Moon15Thu
16Fri9:521.87:360.06:277:36New Moon16Fri
17Sat10:431.68:060.26:277:35New Moon17Sat
18Sun11:381.48:180.56:287:34Waxing Crescent18Sun
19Mon12:461.17:390.76:287:33Waxing Crescent19Mon
20Tue2:070.98:040.76:297:32Waxing Crescent20Tue
21Wed1:441.211:350.46:297:31First Quarter21Wed
22Thu2:101.51:040.16:307:30First Quarter22Thu
23Fri2:571.72:09-0.16:307:29First Quarter23Fri
24Sat3:561.93:08-0.26:317:28First Quarter24Sat
25Sun5:031.94:04-0.36:327:27Waxing Gibbous25Sun
26Mon6:142.04:57-0.26:327:26Waxing Gibbous26Mon
27Tue7:221.95:45-0.16:337:25Waxing Gibbous27Tue
28Wed8:241.86:260.16:337:24Full Moon28Wed
29Thu9:181.76:580.26:347:23Full Moon29Thu
30Fri10:071.67:170.56:347:21Full Moon30Fri
31Sat10:521.47:140.76:357:20Full Moon31Sat
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 11:54 am — 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 19% 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 (19% 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