Tides in Texas

Galveston Pier 21 tide times

TexasNear Galveston, Galveston CountyNOAA 8771450Water level station

The tide is rising: high tide at 8:35 PM, 1.9 ft. Measured 1.84 ft at 5:00 PM, 0.57 ft above the prediction.

Now

Today, Tuesday, September 29: every high and low tide, and the predicted curve through the day.

  1. Low tide12:10 AM1.5 ft
  2. High tide4:37 AM1.7 ft
  3. Low tide12:16 PM0.3 ft
  4. High tide8:35 PM1.9 ft
0.51.01.52.012 AM3 AM6 AM9 AM12 PM3 PM6 PM9 PM12 AMNow

Feet above mean lower low water. Times are Central Daylight Time. Sunrise 7:11 AM, sunset 7:07 PM.

Alerts in force

National Weather Service products for coastal flooding, storm surge, high surf and tsunami at this station’s position.

None right now. The National Weather Service issues coastal flood advisories and warnings, storm surge watches and warnings, high surf advisories and tsunami messages for water at this station.

7-day tide table

Highest tide this week 2.0 ft, Sat, Oct 3 at 2:51 AM. Lowest 0.1 ft, Thu, Oct 1 at 2:06 PM.

High and low tides at Galveston Pier 21, TX, Central Daylight Time, feet above MLLW
DateHigh and low tidesSunrise / sunsetMoon
Tue, Sep 29 TodayLow 12:10 AM 1.5 ftHigh 4:37 AM 1.7 ftLow 12:16 PM 0.3 ftHigh 8:35 PM 1.9 ft7:11 AM / 7:07 PMWaning gibbousRises 8:57 PM
Wed, Sep 30Low 1:20 AM 1.7 ftHigh 4:09 AM 1.7 ftLow 1:07 PM 0.1 ftHigh 10:02 PM 2.0 ft7:12 AM / 7:06 PMWaning gibbousRises 9:46 PM
Thu, Oct 1Low 2:06 PM 0.1 ftHigh 11:51 PM 2.0 ft7:12 AM / 7:05 PMWaning gibbousRises 10:43 PM
Fri, Oct 2Low 3:13 PM 0.1 ft7:13 AM / 7:03 PMWaning gibbousRises 11:47 PM
Sat, Oct 3High 2:51 AM 2.0 ftLow 4:25 PM 0.1 ft7:14 AM / 7:02 PMLast quarter 8:25 AM
Sun, Oct 4High 3:12 AM 2.0 ftLow 5:41 PM 0.2 ft7:14 AM / 7:01 PMWaning crescentRises 12:55 AM
Mon, Oct 5High 2:58 AM 1.9 ftLow 6:56 PM 0.4 ft7:15 AM / 7:00 PMWaning crescentRises 2:04 AM

Next moon phases: last quarter Sat, Oct 3, new moon Sat, Oct 10.

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The calendar holds every high and low for the next three months and keeps itself three months ahead.

Water level, last 48 hours

Measured 1.84 ft at 5:00 PM, 0.57 ft above the prediction. Highest in 48 hours: 2.32 ft at Sun 6:18 PM.

0123412 AM12 PM12 AM12 PM12 AMMinor flooding 4.0 ftNow
  • Measured
  • Predicted tide

Storm surge

Measured less predicted: +0.57 ft now; over 48 hours, +0.15 ft to +0.63 ft. Wind, air pressure and river flow move the water off the tide table.

0.00.10.20.30.40.50.612 AM12 PM12 AM12 PMPredicted tideNow

Coastal flood thresholds

Minor flooding4.0 ft
Moderate flooding4.5 ft
Major flooding5.0 ft

The water is 2.16 ft below minor flood level now. Highest predicted tide in the next 7 days: 2.0 ft on Sat, Oct 3 at 2:51 AM, 2.0 ft below minor flooding. Thresholds are the National Weather Service’s, used for its coastal flood advisories and warnings, in feet above MLLW.

High tide flooding

Flooding at high tide on calm, sunny days, with no storm: the days a year the water reaches NOAA’s flood thresholds, counted from May to April, and the days expected ahead as the sea rises.

From May 2025 to April 2026 the water reached minor high tide flooding on 3 days. NOAA’s outlook for May 2026 to April 2027 is 12 to 20 days.

Last year
3 daysMay 2025 to April 2026
Outlook
12 to 20 daysMay 2026 to April 2027
Record
27 daysMay 2020 to April 2021
Typical in 2000
3 daysNOAA’s trend value
Days each year, May to April, the water reached NOAA’s minor flooding threshold here, since 1920. Years less than 80% measured are left out. The last bar is the outlook, drawn to the top of its range.

Recent years

May to AprilMinorModerateMajorMeasured
2025 to 2026300100%
2024 to 20252330100%
2023 to 20242300100%
2022 to 2023800100%
2021 to 20221410100%
2020 to 20212751100%
2019 to 20201800100%
2018 to 20191300100%
2017 to 20181800100%
2016 to 2017800100%

Thresholds

FloodingAbove MHHWAbove MLLWWhat it means
Minor1.70 ft3.11 ftDisruptive: flooded low roads and yards, and overwhelmed storm drains
Moderate2.67 ft4.08 ftTypically damaging to homes and businesses near the water
Major3.89 ft5.30 ftOften destructive

NOAA’s national high tide flooding thresholds, set from the tide range so they compare from one gauge to the next. MHHW is the average of each day’s higher high tide; MLLW is the zero of this page’s tide tables. Where the National Weather Service has set flood levels of its own (under Water level), those drive its coastal flood advisories and can differ.

Flood days ahead

NOAA’s likeliest range for 2050: 170 to 210 days a year of minor flooding, between the Intermediate and Intermediate-High scenarios, and 20 to 30 days of moderate.

Days a year of minor flooding, by sea level rise scenario
DecadeLowInt-LowIntermediateInt-HighHigh
2020s1515151515
2030s3035353535
2040s65758595110
2050s120150170210250
2060s195235280325350
2070s265310345360365
2080s310350365365365
2090s340360365365365
2100s355365365365365
Days a year of moderate flooding, by sea level rise scenario
DecadeLowInt-LowIntermediateInt-HighHigh
2020s11111
2030s23333
2040s567810
2050s1015203050
2060s254065125200
2070s5090165295350
2080s90170295360365
2090s140260355365365
2100s200325365365365

Projected by NOAA from the 2022 interagency sea level rise scenarios (see Sea level rise below): the average days a year in each decade.

Sea level rise

The 2022 Interagency Sea Level Rise Technical Report’s five scenarios for this gauge, in feet of rise above the 1996 to 2014 average, with 2005 as zero.

By 2050, 1.4 ft (Low) to 2.1 ft (High); Intermediate 1.6 ft, likely 1.4 ft to 1.9 ft. By 2100, 2.7 ft (Low) to 8.1 ft (High); Intermediate 4.8 ft, likely 4.1 ft to 5.3 ft.

0246810121416 ft2020205021002150LowInt-LowIntermediateInt-HighHigh
  • Low
  • Intermediate-Low
  • Intermediate
  • Intermediate-High
  • High
  • Intermediate, likely range
  • Measured trend, continued

Measured here from 1904 to 2025, sea level rose 6.63 mm a year (±0.10, 95% confidence), 2.18 ft in 100 years.

Feet of rise above the 2005 zero, median of each scenario
YearLowInt-LowIntermediateInt-HighHigh
20200.50.50.50.50.5
20300.80.80.90.90.9
20401.11.21.21.31.4
20501.41.51.61.82.1
20601.71.92.12.52.9
20701.92.22.63.34.0
20802.22.63.24.35.3
20902.42.94.05.36.7
21002.73.34.86.48.1
21102.93.75.67.49.5
21203.24.06.58.210.9
21303.44.47.29.112.0
21403.74.87.99.813.0
21503.95.28.610.514.0

The five scenarios run from 0.3 to 2.0 meters (1 to 6.6 feet) of global rise by 2100, each adjusted for this coast’s sinking or rising land and its ocean. They agree closely to 2050, when most of the rise is already set, and part after it with how fast the ice sheets melt. The likely range is the 17th to 83rd percentile.

See 1 to 10 ft of rise on the map

Datums and records

Heights above mean lower low water (MLLW), the zero of this page and of NOAA’s charts. Tidal epoch 1983-2001.

Mean higher high water MHHW1.41 ft
Mean high water MHW1.32 ft
Mean diurnal tide level DTL0.71 ft
Mean tide level MTL0.82 ft
Mean sea level MSL0.83 ft
Mean low water MLW0.30 ft
Mean lower low water MLLW0.00 ft
NAVD88 (land survey datum) NAVD880.31 ft
Highest water measured September 8, 190013.52 ft
Lowest water measured January 11, 1908-6.28 ft
Highest astronomical tide2.15 ft
Lowest astronomical tide-1.22 ft

Mean range of tide 1.02 ft; great diurnal range 1.41 ft.

What this means

Heights are feet above mean lower low water (MLLW): the average of the lower of each day’s two low tides over NOAA’s 19-year tidal epoch, and the zero of US tide tables and nautical charts. A low tide below that average is printed as a negative height.

Predictions are astronomical. They account for the moon and the sun, not the weather: onshore wind, low air pressure and high river flow hold the water above the prediction, offshore wind and high pressure hold it below. The water level above measures the difference.

Spring tides, the largest ranges of the month, follow the new and full moon by a day or two. Neap tides, the smallest, follow the quarter moons.

Nearby8

The closest other NOAA tide stations, nearest first.

More for this place

Sources

Tide predictions and water levels from NOAA’s Center for Operational Oceanographic Products and Services (CO-OPS). Coastal flood, storm surge and high surf products from the National Weather Service. High tide flooding counts, outlook and projections from NOAA CO-OPS’s high tide flooding products (thresholds after Sweet et al. 2018). Sea level rise scenarios from the 2022 Interagency Sea Level Rise Technical Report (Sweet et al. 2022), as NOAA publishes them per gauge. Measured trend from NOAA’s sea level trends. Station 8771450: original at NOAA.