Tides Today & Tomorrow in Galveston Pier 21, TX

TIDE TIMES for Monday, August 3, 2026
The tide is currently rising in Galveston Pier 21, TX.
Next low tide (tomorrow) : 1:35 am (0.8 ft)
Next high tide : in 3h 10m at 9:30 pm (1.0 ft)
Sunset today : 8:09 pm
Sunrise tomorrow : 6:40 am
Moon phase : Waning Gibbous (75% illuminated)
Tide Station Location : Station #8771450
Common Questions About Tides

Galveston Pier 21, TX Tides - Jul 1964

DateHigh TideLow TideSunMoonDate
AMftPMftAMftPMftRiseSet
1Wed10:511.28:440.82:290.26:140.86:238:22Third Quarter1Wed
2Thu11:051.211:480.83:170.46:100.56:238:22Third Quarter2Thu
3Fri11:141.14:120.66:270.36:248:22Third Quarter3Fri
4Sat1:321.011:17 AM1.15:260.96:570.06:248:22Waning Crescent4Sat
5Sun2:501.211:20 AM1.27:221.17:36-0.36:248:22Waning Crescent5Sun
6Mon3:541.411:22 AM1.39:201.28:20-0.56:258:22Waning Crescent6Mon
7Tue4:491.69:07-0.76:258:22Waning Crescent7Tue
8Wed5:391.69:57-0.86:268:22New Moon8Wed
9Thu6:261.61:301.411:271.410:48-0.76:268:21New Moon9Thu
10Fri7:121.62:511.411:481.411:40-0.66:278:21New Moon10Fri
11Sat7:571.54:141.312:531.36:278:21Waxing Crescent11Sat
12Sun8:411.45:361.212:35-0.42:201.16:288:21Waxing Crescent12Sun
13Mon9:231.37:081.01:30-0.23:290.96:288:20Waxing Crescent13Mon
14Tue9:591.29:050.92:240.14:280.76:298:20First Quarter14Tue
15Wed10:311.111:150.93:170.45:190.56:298:20First Quarter15Wed
16Thu10:551.14:080.76:050.36:308:19First Quarter16Thu
17Fri1:121.011:06 AM1.15:120.96:460.16:308:19First Quarter17Fri
18Sat3:051.17:230.06:318:19Waxing Gibbous18Sat
19Sun4:401.37:58-0.26:328:18Waxing Gibbous19Sun
20Mon5:191.38:33-0.26:328:18Waxing Gibbous20Mon
21Tue5:421.49:08-0.36:338:17Waxing Gibbous21Tue
22Wed6:031.49:42-0.36:338:17Full Moon22Wed
23Thu6:271.410:17-0.36:348:16Full Moon23Thu
24Fri6:531.410:51-0.36:348:16Full Moon24Fri
25Sat7:221.411:25-0.26:358:15Full Moon25Sat
26Sun7:521.46:368:15Waning Gibbous26Sun
27Mon8:211.312:00-0.16:368:14Waning Gibbous27Mon
28Tue8:471.35:591.012:360.03:420.96:378:13Waning Gibbous28Tue
29Wed9:081.27:570.91:150.23:580.86:378:13Waning Gibbous29Wed
30Thu9:221.210:200.91:580.54:210.56:388:12Third Quarter30Thu
31Fri9:301.22:480.74:530.36:388:11Third Quarter31Fri
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 11:32 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 transitional phase. Tonight's moon is 75% 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 Gibbous (75% 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