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FZUS54 KHGX 201256
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
656 AM CST Thu Nov 20 2025

Upper Texas coastal waters from High Island to the Matagorda Ship
Channel out 60 nautical miles including Galveston and Matagorda
Bays.

Seas are provided as a range of the average height of the highest
1/3 of the waves...along with the occasional height of the
average highest 10 percent of the waves.

GMZ300-210115-
656 AM CST Thu Nov 20 2025

.Synopsis For High Island to the Matagorda Ship Channel Out 60 NM
including Galveston and Matagorda Bays.

Light to moderate onshore flow should continue for the next
several days with Gulf seas of 2 to 4 feet. Isolated to widely
scattered showers are possible today. A weak front will move into
Southeast Texas on Friday, but is expected to stall inland through
Saturday. Scattered showers and thunderstorm chances are possible
closer to the boundary. Late night and early morning fog inland
may also bleed into the northern bays at times. Better chances of
that occurring should be Friday night. Otherwise, southerly winds
will increase Sunday as the stalled front dissipates. The next
weather system will move into the area sometime Monday.

$$

GMZ335-210115-
Galveston Bay-
656 AM CST Thu Nov 20 2025

.TODAY...Southeast winds around 10 knots, increasing to 10 to
15 knots with gusts up to 20 knots this afternoon. Bay waters
slightly choppy. Patchy fog early this morning. A slight chance
of showers late this morning. A chance of showers early this
afternoon, then a slight chance of showers.
.TONIGHT...Southeast winds 5 to 10 knots. Bay waters smooth. A
slight chance of showers with isolated thunderstorms in the
evening.
.FRIDAY...South winds 5 to 10 knots. Bay waters smooth. A chance
of showers.
.FRIDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth. A
chance of showers after midnight.
.SATURDAY...Northwest winds around 5 knots, becoming southeast in
the afternoon. Bay waters smooth. A chance of showers.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters
smooth.
.SUNDAY...Southeast winds around 10 knots. Bay waters smooth to
slightly choppy.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
slightly choppy.
.MONDAY...South winds 10 to 15 knots. Bay waters slightly choppy.
A chance of showers.
.MONDAY NIGHT...South winds 10 to 15 knots, becoming west after
midnight. Bay waters slightly choppy. Showers likely, mainly in
the evening.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-210115-
Matagorda Bay-
656 AM CST Thu Nov 20 2025

.TODAY...Southeast winds 10 to 15 knots. Bay waters slightly
choppy.
.TONIGHT...Southeast winds 10 to 15 knots with gusts up to
20 knots. Bay waters slightly choppy.
.FRIDAY...South winds around 10 knots. Bay waters smooth to
slightly choppy. A chance of showers.
.FRIDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth. A
chance of showers after midnight.
.SATURDAY...Southeast winds 5 to 10 knots. Bay waters smooth. A
chance of showers.
.SATURDAY NIGHT...Southeast winds around 10 knots. Bay waters
smooth to slightly choppy.
.SUNDAY...Southeast winds 10 to 15 knots. Bay waters slightly
choppy. A chance of showers in the morning.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
slightly choppy. A chance of showers after midnight.
.MONDAY...South winds 10 to 15 knots. Bay waters slightly choppy.
A chance of showers.
.MONDAY NIGHT...South winds 10 to 15 knots, becoming west after
midnight. Bay waters slightly choppy, diminishing to smooth to
slightly choppy after midnight. A chance of showers.

$$

GMZ350-355-210115-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
656 AM CST Thu Nov 20 2025

.TODAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 5 seconds. A chance of showers late
this morning and early afternoon.
.TONIGHT...Southeast winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at
5 seconds.
.FRIDAY...South winds around 10 knots. Seas 2 to 3 feet. Wave
Detail: South 2 feet at 6 seconds. A chance of showers in the
afternoon.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: South 2 feet at 6 seconds. A chance of showers after
midnight.
.SATURDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 6 seconds. A chance of showers in the
morning.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: South 3 feet at 6 seconds.
.SUNDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 5 feet.
.MONDAY...South winds around 15 knots. Seas 3 to 5 feet. A chance
of showers.
.MONDAY NIGHT...South winds around 15 knots, becoming west after
midnight. Seas 3 to 5 feet. Showers likely, mainly in the
evening.

$$

GMZ370-375-210115-
Waters from Freeport to Matagorda Ship Channel TX from 20 to
60 NM-Waters from High Island to Freeport TX from 20 to 60 NM-
656 AM CST Thu Nov 20 2025

.TODAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: Southeast 3 feet at 5 seconds. A slight chance of showers
early this morning, then a chance of showers late this morning
and early afternoon.
.TONIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: South 3 feet at 6 seconds. A slight chance of showers
with isolated thunderstorms in the evening.
.FRIDAY...South winds around 10 knots. Seas 3 to 4 feet. Wave
Detail: South 3 feet at 6 seconds.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas 3 to 4 feet. Wave
Detail: Southeast 3 feet at 6 seconds.
.SATURDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 6 seconds. A chance of showers in the
morning.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: South 3 feet at 6 seconds.
.SUNDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 5 feet.
.MONDAY...South winds around 15 knots. Seas 4 to 5 feet. A chance
of showers.
.MONDAY NIGHT...South winds around 15 knots, becoming southwest
after midnight. Seas 4 to 5 feet. A chance of showers in the
evening, then showers likely after midnight.

Winds and seas higher in and near thunderstorms.

$$