Tides Today & Tomorrow in Galveston Pier 21, TX

TIDE TIMES for Wednesday, August 19, 2026
The tide is currently falling in Galveston Pier 21, TX.
Next low tide : in 12m at 4:35 pm (0.1 ft)
Next high tide (tomorrow) : 3:56 am (1.5 ft)
Sunset today : 7:55 pm
Sunrise tomorrow : 6:49 am
Moon phase : First Quarter (46% illuminated)
Tide Station Location : Station #8771450
Common Questions About Tides

Galveston Pier 21, TX Tides - Feb 1938

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Tue2:540.75:550.710:23-0.510:500.47:085:57New Moon1Tue
2Wed3:550.66:150.710:52-0.411:380.37:085:58Waxing Crescent2Wed
3Thu4:590.66:320.711:22-0.27:075:58Waxing Crescent3Thu
4Fri6:120.56:450.712:280.111:54 AM0.07:065:59Waxing Crescent4Fri
5Sat7:400.56:560.71:170.012:290.27:066:00Waxing Crescent5Sat
6Sun9:290.57:050.72:08-0.21:060.47:056:01First Quarter6Sun
7Mon11:200.67:130.73:02-0.41:440.67:046:02First Quarter7Mon
8Tue7:230.84:01-0.67:046:02First Quarter8Tue
9Wed8:040.95:05-0.77:036:03Waxing Gibbous9Wed
10Thu2:550.96:10-0.86:530.97:026:04Waxing Gibbous10Thu
11Fri3:290.97:12-0.87:280.87:016:05Waxing Gibbous11Fri
12Sat3:580.98:07-0.88:060.77:016:06Waxing Gibbous12Sat
13Sun1:130.94:270.88:58-0.88:500.57:006:06Full Moon13Sun
14Mon2:301.04:550.89:46-0.69:380.46:596:07Full Moon14Mon
15Tue3:400.95:220.810:30-0.410:300.26:586:08Full Moon15Tue
16Wed4:460.95:490.711:12-0.211:260.16:576:09Waning Gibbous16Wed
17Thu5:530.86:130.711:520.16:566:09Waning Gibbous17Thu
18Fri7:040.76:320.712:25-0.112:300.36:556:10Waning Gibbous18Fri
19Sat8:280.76:390.71:23-0.21:010.56:546:11Waning Gibbous19Sat
20Sun10:110.76:210.72:21-0.21:130.66:546:12Third Quarter20Sun
21Mon5:480.83:19-0.36:536:12Third Quarter21Mon
22Tue5:060.84:18-0.36:526:13Third Quarter22Tue
23Wed5:060.95:18-0.36:516:14Third Quarter23Wed
24Thu5:090.96:16-0.36:506:14Waning Crescent24Thu
25Fri4:040.87:07-0.46:496:15Waning Crescent25Fri
26Sat3:550.87:50-0.38:220.76:486:16Waning Crescent26Sat
27Sun12:150.84:050.88:28-0.38:420.66:476:17Waning Crescent27Sun
28Mon1:330.84:190.89:02-0.39:100.56:466:17New Moon28Mon
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 10:15 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 46% 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 First Quarter (46% 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