Tides Today & Tomorrow in Galveston Pier 21, TX

TIDE TIMES for Thursday, July 9, 2026
The tide is currently falling in Galveston Pier 21, TX.
Next low tide : in 0m at 5:16 am (1.2 ft)
Next high tide : 8:43 am (1.2 ft)
Sunset today : 8:22 pm
Sunrise tomorrow : 6:26 am
Moon phase : Waning Crescent (29% illuminated)
Tide Station Location : Station #8771450
Common Questions About Tides

Galveston Pier 21, TX Tides - Jun 1996

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Sat5:531.72:021.411:001.310:28-0.46:198:14Full Moon1Sat
2Sun6:381.72:391.411:451.411:12-0.46:198:14Full Moon2Sun
3Mon7:251.73:301.412:531.46:198:15Waning Gibbous3Mon
4Tue8:141.64:381.312:02-0.32:221.36:198:15Waning Gibbous4Tue
5Wed9:031.65:581.212:56-0.23:251.26:198:16Waning Gibbous5Wed
6Thu9:511.57:371.11:550.04:191.06:198:16Waning Gibbous6Thu
7Fri10:351.49:471.02:560.25:120.86:198:17Third Quarter7Fri
8Sat11:141.311:491.14:000.46:030.66:198:17Third Quarter8Sat
9Sun11:481.35:100.76:520.46:198:17Third Quarter9Sun
10Mon1:271.112:191.36:350.97:370.26:198:18Waning Crescent10Mon
11Tue2:511.312:451.28:131.18:180.06:198:18Waning Crescent11Tue
12Wed4:011.41:031.29:421.28:55-0.16:198:19Waning Crescent12Wed
13Thu4:561.49:29-0.26:198:19Waning Crescent13Thu
14Fri5:401.510:01-0.26:198:19New Moon14Fri
15Sat6:181.510:33-0.26:198:20New Moon15Sat
16Sun6:541.511:05-0.26:198:20New Moon16Sun
17Mon7:301.411:38-0.16:198:20New Moon17Mon
18Tue8:071.46:198:21Waxing Crescent18Tue
19Wed8:451.412:130.06:198:21Waxing Crescent19Wed
20Thu9:221.312:500.16:208:21Waxing Crescent20Thu
21Fri9:551.31:280.26:208:21Waxing Crescent21Fri
22Sat10:231.29:070.82:060.45:370.76:208:21First Quarter22Sat
23Sun10:431.211:460.82:450.56:030.56:208:22First Quarter23Sun
24Mon10:551.23:280.76:310.36:218:22First Quarter24Mon
25Tue1:220.911:02 AM1.24:200.96:590.26:218:22First Quarter25Tue
26Wed2:331.111:12 AM1.25:331.07:31-0.16:218:22Waxing Gibbous26Wed
27Thu3:291.211:30 AM1.27:191.18:07-0.26:228:22Waxing Gibbous27Thu
28Fri4:161.411:59 AM1.38:461.28:46-0.46:228:22Waxing Gibbous28Fri
29Sat4:591.512:411.39:321.39:28-0.56:228:22Full Moon29Sat
30Sun5:411.51:361.310:041.310:13-0.66:238:22Full Moon30Sun
DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
Tidal Data Source: (8771450)

Common Questions About Galveston Pier 21, TX Tides

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

Slack tide in Galveston Pier 21, TX is approximately 6:59 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 transitional phase. Tonight's moon is 29% 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 shifting between spring and neap.

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 Waning Crescent (29% illuminated). This places Galveston Pier 21, TX in a transitional tide cycle, so tidal ranges are shifting between spring and neap 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