Tides Today & Tomorrow in Grand Isle, LA

TIDE TIMES for Friday, June 26, 2026
The tide is currently rising in Grand Isle, LA.
Next low tide (tomorrow) : 7:51 pm (-0.3 ft)
Next high tide (tomorrow) : in 11h 46m at 8:19 am (1.3 ft)
Sunset today : 8:03 pm
Sunrise tomorrow : 6:02 am
Moon phase : Waxing Gibbous (90% illuminated)
Tide Station Location : Station #8761724
Common Questions About Tides

Grand Isle, LA Tides - Dec 2006

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri7:001.14:460.06:365:01Waxing Gibbous1Fri
2Sat7:161.35:27-0.36:375:01Waxing Gibbous2Sat
3Sun7:511.46:15-0.56:385:01Full Moon3Sun
4Mon8:341.57:09-0.66:385:01Full Moon4Mon
5Tue9:221.58:08-0.66:395:01Full Moon5Tue
6Wed10:121.49:06-0.66:405:01Full Moon6Wed
7Thu11:011.310:01-0.56:415:01Waning Gibbous7Thu
8Fri11:451.210:50-0.46:415:01Waning Gibbous8Fri
9Sat11:30-0.36:425:01Waning Gibbous9Sat
10Sun12:171.011:59-0.26:435:02Third Quarter10Sun
11Mon12:290.812:020.06:435:02Third Quarter11Mon
12Tue12:060.68:480.511:110.26:445:02Third Quarter12Tue
13Wed7:350.510:170.26:455:02Third Quarter13Wed
14Thu6:250.75:190.16:455:03Waning Crescent14Thu
15Fri6:310.85:03-0.16:465:03Waning Crescent15Fri
16Sat6:551.05:20-0.36:475:03Waning Crescent16Sat
17Sun7:251.15:47-0.46:475:04Waning Crescent17Sun
18Mon7:581.26:21-0.56:485:04New Moon18Mon
19Tue8:331.27:01-0.66:485:05New Moon19Tue
20Wed9:091.37:47-0.76:495:05New Moon20Wed
21Thu9:471.28:36-0.76:495:06New Moon21Thu
22Fri10:271.29:24-0.76:505:06Waxing Crescent22Fri
23Sat11:071.110:09-0.76:505:07Waxing Crescent23Sat
24Sun11:410.910:50-0.56:515:07Waxing Crescent24Sun
25Mon11:510.611:23-0.46:515:08Waxing Crescent25Mon
26Tue11:010.311:19-0.16:525:08First Quarter26Tue
27Wed5:590.49:520.16:525:09First Quarter27Wed
28Thu5:290.63:29-0.16:525:10First Quarter28Thu
29Fri5:400.84:01-0.46:535:10Waxing Gibbous29Fri
30Sat6:161.04:43-0.66:535:11Waxing Gibbous30Sat
31Sun7:041.15:30-0.86:535:12Waxing Gibbous31Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8761724)

Common Questions About Grand Isle, LA Tides

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

Slack tide in Grand Isle, LA is approximately 2:05 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 Isle, LA?

Grand Isle, LA is currently in a spring phase. Tonight's moon is 90% 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 Grand Isle, 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 Isle, LA?

Tide predictions for Grand Isle, 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 Isle, LA?

Tide data for Grand Isle, LA is sourced from NOAA Station #8761724. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8761724.

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

Tonight the moon over Grand Isle, LA is Waxing Gibbous (90% illuminated). This places Grand Isle, 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