Galveston tide chart for today and solunar table

What are the tides like in Galveston?

The gauge is at Pier 21 on the Galveston Channel, the harbor side of Galveston Island. The tide is small and mixed; wind and fronts often move the water more than the tide itself.

Based on the station's constants, Galveston has a mixed, mainly diurnal tide: the form number (K1+O1)/(M2+S2) is 2.33. The reference spring range — around new and full moon — is about 0.7 ft, and mean sea level sits 0.8 ft above MLLW. That is why the two high tides (or the two lows) on the same day are often noticeably different in height.

What is the best time to fish in Galveston?

Solunar theory points to the major periods (about 2 hours centered on the moon passing overhead or underfoot) and the minor periods (1 hour around moonrise and moonset). What surf, pier and inshore anglers repeat most often is simpler: moving water (the middle of the incoming or outgoing tide), low light (dawn and dusk) and a moon near new or full, when the tidal range is biggest.

The fishing score from 0 to 4 combines those three signals. It is a traditional rule of thumb, not a catch forecast: it knows nothing about wind, rain, water clarity or the species you are after. In November 2026, the top-scoring days at Galveston are November 23, November 24, and November 25.

Where does this data come from?

The prediction adds up 32 harmonic constituents for NOAA station 8771450 — Galveston Pier 21, published by NOAA CO-OPS (Vector average of 5 years (2021-2025). Ssa and Sa from 19 one-year LSQHA analyses between 2006-2025.). Phases are referenced to Greenwich (GMT) and converted to local time for each date, including daylight saving time. Heights are relative to MLLW from the station's 1983-2001 tidal datum epoch. Node factors follow Schureman; sun and moon positions use Meeus's formulas.

Wind, pressure and storms change the real water level, sometimes by a foot or more. Times shift much less than heights.