Tides Today & Tomorrow in Galveston Pier 21, TX

TIDE TIMES for Sunday, August 16, 2026
The tide is currently rising in Galveston Pier 21, TX.
Next low tide : 1:57 pm (0.5 ft)
Next high tide : in 6h 24m at 7:27 am (1.2 ft)
Sunset today : 7:58 pm
Sunrise tomorrow : 6:48 am
Moon phase : Waxing Crescent (19% illuminated)
Tide Station Location : Station #8771450
Common Questions About Tides

Galveston Pier 21, TX Tides - Jun 1945

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Fri11:051.61:590.06:198:13Waning Gibbous1Fri
2Sat11:431.52:540.16:198:14Third Quarter2Sat
3Sun12:121.43:530.27:091.06:198:14Third Quarter3Sun
4Mon12:341.34:590.47:070.76:198:15Third Quarter4Mon
5Tue12:441.112:531.36:140.67:310.46:198:15Waning Crescent5Tue
6Wed2:191.31:091.27:410.98:060.16:198:16Waning Crescent6Wed
7Thu3:361.51:211.39:061.18:46-0.26:198:16Waning Crescent7Thu
8Fri4:411.61:311.310:251.29:29-0.46:188:17New Moon8Fri
9Sat5:391.710:13-0.56:188:17New Moon9Sat
10Sun6:331.810:59-0.56:188:18New Moon10Sun
11Mon7:251.711:48-0.56:188:18New Moon11Mon
12Tue8:181.66:188:18Waxing Crescent12Tue
13Wed9:131.612:39-0.36:188:19Waxing Crescent13Wed
14Thu10:091.51:32-0.26:198:19Waxing Crescent14Thu
15Fri10:571.42:250.06:198:19First Quarter15Fri
16Sat11:351.33:160.26:198:20First Quarter16Sat
17Sun12:031.24:040.47:080.76:198:20First Quarter17Sun
18Mon12:020.912:231.24:520.67:250.56:198:20First Quarter18Mon
19Tue1:440.912:321.15:490.87:470.36:198:21Waxing Gibbous19Tue
20Wed3:081.112:211.17:121.08:130.16:198:21Waxing Gibbous20Wed
21Thu4:141.211:41 AM1.18:491.18:400.06:208:21Waxing Gibbous21Thu
22Fri5:001.39:09-0.26:208:21Waxing Gibbous22Fri
23Sat5:371.49:39-0.36:208:21Waxing Gibbous23Sat
24Sun6:111.510:11-0.46:208:22Full Moon24Sun
25Mon6:461.510:45-0.46:218:22Full Moon25Mon
26Tue7:251.511:23-0.46:218:22Full Moon26Tue
27Wed8:071.56:218:22Waning Gibbous27Wed
28Thu8:511.512:04-0.46:228:22Waning Gibbous28Thu
29Fri9:331.412:49-0.36:228:22Waning Gibbous29Fri
30Sat10:091.31:39-0.16:228:22Waning Gibbous30Sat
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 10:42 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 19% 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 Crescent (19% 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