Tides Today & Tomorrow in Galveston Pier 21, TX

TIDE TIMES for Thursday, August 6, 2026
The tide is currently falling in Galveston Pier 21, TX.
Next low tide : in 1h 31m at 5:13 pm (-0.2 ft)
Next high tide (tomorrow) : 4:50 am (1.5 ft)
Sunset today : 8:07 pm
Sunrise tomorrow : 6:42 am
Moon phase : Third Quarter (43% illuminated)
Tide Station Location : Station #8771450
Common Questions About Tides

Galveston Pier 21, TX Tides - Sep 1960

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu2:531.610:46 AM1.58:131.57:360.06:567:41Waxing Gibbous1Thu
2Fri3:351.612:321.68:311.58:330.06:577:40Waxing Gibbous2Fri
3Sat4:121.62:001.69:011.39:260.16:577:38Waxing Gibbous3Sat
4Sun4:461.63:181.69:381.210:140.26:587:37Full Moon4Sun
5Mon5:171.64:291.610:211.011:010.46:587:36Full Moon5Mon
6Tue5:471.55:361.611:080.911:460.76:597:35Full Moon6Tue
7Wed6:161.56:431.612:000.76:597:34Waning Gibbous7Wed
8Thu6:421.57:531.512:320.912:550.67:007:32Waning Gibbous8Thu
9Fri7:041.59:131.51:211.11:530.67:007:31Waning Gibbous9Fri
10Sat7:151.410:461.52:221.32:500.57:017:30Waning Gibbous10Sat
11Sun7:041.53:451.43:460.57:017:29Third Quarter11Sun
12Mon12:241.64:410.57:027:28Third Quarter12Mon
13Tue1:441.65:370.57:027:26Third Quarter13Tue
14Wed2:381.66:330.57:037:25Third Quarter14Wed
15Thu3:141.67:250.57:047:24Waning Crescent15Thu
16Fri3:401.68:110.57:047:23Waning Crescent16Fri
17Sat4:031.61:191.59:291.48:510.67:057:22Waning Crescent17Sat
18Sun4:231.62:311.59:461.39:260.67:057:20Waning Crescent18Sun
19Mon4:421.63:341.510:091.29:590.77:067:19New Moon19Mon
20Tue5:011.64:321.610:351.110:300.87:067:18New Moon20Tue
21Wed5:181.65:291.611:050.911:021.07:077:17New Moon21Wed
22Thu5:331.66:271.611:380.811:371.17:077:15New Moon22Thu
23Fri5:471.67:301.712:170.77:087:14Waxing Crescent23Fri
24Sat6:001.68:411.712:171.31:030.57:087:13Waxing Crescent24Sat
25Sun6:111.610:011.81:031.51:560.47:097:12Waxing Crescent25Sun
26Mon6:181.611:241.82:051.62:550.47:097:11First Quarter26Mon
27Tue3:580.37:107:09First Quarter27Tue
28Wed12:351.85:050.37:107:08First Quarter28Wed
29Thu1:311.86:150.47:117:07First Quarter29Thu
30Fri2:161.811:37 AM1.68:161.67:230.57:117:06Waxing Gibbous30Fri
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8771450)

Common Questions About Galveston Pier 21, TX Tides

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What time does the tide turn (slack tide) in Galveston Pier 21, TX today?

Slack tide in Galveston Pier 21, TX is approximately 11:01 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 Galveston Pier 21, TX?

Galveston Pier 21, TX is currently in a neap phase. Tonight's moon is 43% 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 minimum.

What datum are Galveston Pier 21, TX 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 Galveston Pier 21, TX?

Tide predictions for Galveston Pier 21, TX 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 Galveston Pier 21, TX?

Tide data for Galveston Pier 21, TX is sourced from NOAA Station #8771450. View the official NOAA station page at https://tidesandcurrents.noaa.gov/stationhome.html?id=8771450.

What is the moon phase in Galveston Pier 21, TX tonight?

Tonight the moon over Galveston Pier 21, TX is Third Quarter (43% illuminated). This places Galveston Pier 21, TX in a neap tide cycle, so tidal ranges are near their weekly minimum 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