Tides Today & Tomorrow in Galveston Pier 21, TX

TIDE TIMES for Saturday, July 25, 2026
The tide is currently falling in Galveston Pier 21, TX.
Next low tide : in 35m at 8:29 pm (-0.3 ft)
Next high tide (tomorrow) : 6:46 am (1.5 ft)
Sunset today : 8:15 pm
Sunrise tomorrow : 6:35 am
Moon phase : Waxing Gibbous (86% illuminated)
Tide Station Location : Station #8771450
Common Questions About Tides

Galveston Pier 21, TX Tides - Dec 1977

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Thu9:541.31:000.26:565:20Waning Gibbous1Thu
2Fri10:251.31:420.36:565:20Third Quarter2Fri
3Sat10:481.22:270.46:575:20Third Quarter3Sat
4Sun10:410.811:061.26:040.73:210.66:585:20Third Quarter4Sun
5Mon12:290.96:200.54:310.86:595:20Waning Crescent5Mon
6Tue1:441.16:430.26:010.96:595:20Waning Crescent6Tue
7Wed2:441.27:13-0.17:251.07:005:20Waning Crescent7Wed
8Thu3:361.47:48-0.38:211.17:015:21Waning Crescent8Thu
9Fri12:251.24:241.58:28-0.59:011.27:025:21New Moon9Fri
10Sat1:041.35:111.59:11-0.79:341.27:025:21New Moon10Sat
11Sun1:501.35:571.59:58-0.710:121.27:035:21New Moon11Sun
12Mon2:431.36:441.410:47-0.711:021.17:045:21Waxing Crescent12Mon
13Tue3:421.37:321.311:39-0.57:045:22Waxing Crescent13Tue
14Wed4:451.18:201.212:261.012:34-0.37:055:22Waxing Crescent14Wed
15Thu6:011.09:061.12:110.91:30-0.17:065:22First Quarter15Thu
16Fri7:500.89:491.13:330.72:270.17:065:23First Quarter16Fri
17Sat10:040.710:271.04:430.43:280.47:075:23First Quarter17Sat
18Sun12:000.85:420.24:450.67:075:24First Quarter18Sun
19Mon1:400.96:300.06:330.87:085:24Waxing Gibbous19Mon
20Tue3:011.07:10-0.18:150.97:085:24Waxing Gibbous20Tue
21Wed3:551.07:45-0.39:330.97:095:25Waxing Gibbous21Wed
22Thu4:311.18:16-0.47:095:25Waxing Gibbous22Thu
23Fri5:011.18:45-0.47:105:26Full Moon23Fri
24Sat5:291.19:14-0.510:110.97:105:27Full Moon24Sat
25Sun12:361.05:581.19:43-0.510:230.97:115:27Full Moon25Sun
26Mon1:230.96:291.010:13-0.511:010.97:115:28Full Moon26Mon
27Tue2:080.97:021.010:44-0.57:125:28Waning Gibbous27Tue
28Wed2:520.87:351.012:310.811:15 AM-0.47:125:29Waning Gibbous28Wed
29Thu8:080.911:47-0.37:125:30Waning Gibbous29Thu
30Fri8:370.912:21-0.27:135:30Waning Gibbous30Fri
31Sat6:110.59:120.83:410.512:560.07:135:31Third Quarter31Sat
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 1:37 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 86% 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 Waxing Gibbous (86% 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