Tides Today & Tomorrow in Grand Pass, LA

TIDE TIMES for Friday, August 21, 2026
The tide is currently rising in Grand Pass, LA.
Next low tide (tomorrow) : 6:44 pm (0.2 ft)
Next high tide (tomorrow) : in 8h 47m at 6:34 am (2.0 ft)
Sunset today : 7:32 pm
Sunrise tomorrow : 6:27 am
Moon phase : First Quarter (65% illuminated)
Tide Station Location : Station #8760668
Common Questions About Tides

Grand Pass, LA Tides - Aug 2057

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed12:061.810:120.16:167:50New Moon1Wed
2Thu12:471.710:410.26:167:49Waxing Crescent2Thu
3Fri1:291.611:070.46:177:48Waxing Crescent3Fri
4Sat2:121.411:240.66:187:47Waxing Crescent4Sat
5Sun8:371.12:581.111:311.111:160.86:187:47Waxing Crescent5Sun
6Mon6:221.23:460.91:420.86:197:46First Quarter6Mon
7Tue5:191.44:050.66:197:45First Quarter7Tue
8Wed5:361.75:090.36:207:44First Quarter8Wed
9Thu6:161.95:580.06:217:43First Quarter9Thu
10Fri7:102.16:46-0.16:217:42Waxing Gibbous10Fri
11Sat8:112.27:34-0.26:227:41Waxing Gibbous11Sat
12Sun9:142.28:20-0.26:227:40Waxing Gibbous12Sun
13Mon10:162.29:03-0.16:237:39Full Moon13Mon
14Tue11:162.19:400.16:247:38Full Moon14Tue
15Wed12:151.910:070.36:247:37Full Moon15Wed
16Thu1:141.710:250.56:257:36Waning Gibbous16Thu
17Fri2:121.510:340.76:257:35Waning Gibbous17Fri
18Sat5:521.13:151.39:401.010:310.96:267:34Waning Gibbous18Sat
19Sun4:511.211:400.96:267:33Waning Gibbous19Sun
20Mon4:131.41:160.86:277:32Third Quarter20Mon
21Tue4:241.63:060.76:287:31Third Quarter21Tue
22Wed4:561.74:560.56:287:30Third Quarter22Wed
23Thu5:401.85:460.46:297:29Third Quarter23Thu
24Fri6:361.86:270.46:297:28Waning Crescent24Fri
25Sat7:421.97:040.36:307:27Waning Crescent25Sat
26Sun8:481.97:370.36:307:26Waning Crescent26Sun
27Mon9:481.98:080.36:317:24Waning Crescent27Mon
28Tue10:411.98:360.46:327:23New Moon28Tue
29Wed11:321.99:040.56:327:22New Moon29Wed
30Thu12:261.89:300.66:337:21New Moon30Thu
31Fri1:261.69:510.86:337:20New Moon31Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8760668)

Common Questions About Grand Pass, LA Tides

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What time does the tide turn (slack tide) in Grand Pass, LA today?

Slack tide in Grand Pass, LA is approximately 12:39 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 Grand Pass, LA?

Grand Pass, LA is currently in a transitional phase. Tonight's moon is 65% 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 Grand Pass, 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 Grand Pass, LA?

Tide predictions for Grand Pass, 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 Grand Pass, LA?

Tide data for Grand Pass, LA is sourced from NOAA Station #8760668. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8760668.

What is the moon phase in Grand Pass, LA tonight?

Tonight the moon over Grand Pass, LA is First Quarter (65% illuminated). This places Grand Pass, 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