Tides Today & Tomorrow in Galveston Pier 21, TX

TIDE TIMES for Tuesday, July 28, 2026
The tide is currently falling in Galveston Pier 21, TX.
Next low tide : in 9h 18m at 10:21 pm (-0.3 ft)
Next high tide (tomorrow) : 7:01 am (1.4 ft)
Sunset today : 8:14 pm
Sunrise tomorrow : 6:37 am
Moon phase : Full Moon (99% illuminated)
Tide Station Location : Station #8771450
Common Questions About Tides

Galveston Pier 21, TX Tides - Apr 1975

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue10:471.32:30-0.17:097:37Third Quarter1Tue
2Wed12:101.33:340.07:077:37Third Quarter2Wed
3Thu1:211.24:400.17:067:38Third Quarter3Thu
4Fri2:091.25:490.27:057:38Third Quarter4Fri
5Sat2:391.26:570.39:001.07:047:39Waning Crescent5Sat
6Sun12:531.13:021.17:570.48:530.97:037:40Waning Crescent6Sun
7Mon2:091.13:201.18:460.59:070.77:027:40Waning Crescent7Mon
8Tue3:141.23:351.19:270.69:280.67:007:41Waning Crescent8Tue
9Wed4:101.23:471.110:040.79:540.46:597:41New Moon9Wed
10Thu5:001.33:561.110:390.810:210.36:587:42New Moon10Thu
11Fri5:471.44:021.211:150.910:510.26:577:43New Moon11Fri
12Sat6:321.44:111.211:561.111:230.16:567:43New Moon12Sat
13Sun7:191.54:211.212:491.26:557:44Waxing Crescent13Sun
14Mon8:111.54:261.32:181.26:547:44Waxing Crescent14Mon
15Tue9:101.512:410.06:537:45Waxing Crescent15Tue
16Wed10:181.51:280.06:527:45Waxing Crescent16Wed
17Thu11:251.52:230.06:517:46First Quarter17Thu
18Fri12:191.43:230.16:497:47First Quarter18Fri
19Sat12:581.44:280.26:551.26:487:47First Quarter19Sat
20Sun1:291.35:390.37:081.06:477:48First Quarter20Sun
21Mon12:091.31:561.36:560.57:410.86:467:48Waxing Gibbous21Mon
22Tue1:501.42:201.38:110.68:210.56:457:49Waxing Gibbous22Tue
23Wed3:111.52:441.39:180.89:030.26:447:50Waxing Gibbous23Wed
24Thu4:201.63:061.310:191.09:470.06:437:50Full Moon24Thu
25Fri5:221.73:291.311:171.110:31-0.16:427:51Full Moon25Fri
26Sat6:191.83:501.412:181.36:427:52Full Moon26Sat
27Sun7:151.84:071.41:301.36:417:52Waning Gibbous27Sun
28Mon8:111.712:06-0.26:407:53Waning Gibbous28Mon
29Tue9:111.612:58-0.16:397:53Waning Gibbous29Tue
30Wed10:161.51:530.06:387:54Waning Gibbous30Wed
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 2:41 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 Galveston Pier 21, TX?

Galveston Pier 21, TX is currently in a spring phase. Tonight's moon is 99% 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 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 Full Moon (99% illuminated). This places Galveston Pier 21, TX 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