509
FZUS54 KHGX 230532
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
1232 AM CDT Tue Sep 23 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.

GMZ300-231830-
1232 AM CDT Tue Sep 23 2025

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

Southeasterly flow along with scattered showers and thunderstorms
continue Tuesday. Expecting a cold front to push through the area
around Wednesday into Thursday with a line of showers and storms
along the boundary. Winds out of the southwest on Wednesday will
become northerly following the frontal passage. Winds will be
light to moderate throughout the forecast period, but may be more
moderate to occasionally strong in the front`s immediate wake,
possibly prompting caution flags.

$$

GMZ335-231830-
Galveston Bay-
1232 AM CDT Tue Sep 23 2025

.REST OF TONIGHT...South winds 10 to 15 knots. Bay waters
slightly choppy. A slight chance of showers and thunderstorms
late.
.TUESDAY...South winds 10 to 15 knots. Bay waters slightly
choppy. A chance of thunderstorms. A chance of showers.
.TUESDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy.
.WEDNESDAY...Southwest winds 5 to 10 knots. Bay waters smooth. A
chance of thunderstorms. A chance of showers in the morning, then
showers in the afternoon.
.WEDNESDAY NIGHT...Southwest winds around 10 knots, becoming
northwest after midnight. Bay waters smooth to slightly choppy,
increasing to slightly choppy after midnight. Showers with a
chance of thunderstorms.
.THURSDAY...Northwest winds 10 to 15 knots. Bay waters slightly
choppy. A chance of thunderstorms. A chance of showers.
.THURSDAY NIGHT...North winds 5 to 10 knots. Bay waters smooth.
.FRIDAY...North winds 5 to 10 knots. Bay waters smooth.
.FRIDAY NIGHT...East winds 5 to 10 knots. Bay waters smooth.
.SATURDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Bay waters smooth.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots, becoming east
after midnight. Bay waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-231830-
Matagorda Bay-
1232 AM CDT Tue Sep 23 2025

.REST OF TONIGHT...South winds 10 to 15 knots. Bay waters
slightly choppy. A slight chance of showers and thunderstorms
late.
.TUESDAY...South winds 10 to 15 knots. Bay waters slightly
choppy. A chance of thunderstorms. A chance of showers.
.TUESDAY NIGHT...South winds 10 to 15 knots with gusts up to
20 knots. Bay waters slightly choppy.
.WEDNESDAY...South winds 10 to 15 knots, diminishing to around
10 knots in the afternoon. Bay waters slightly choppy,
diminishing to smooth in the afternoon. A chance of showers in
the morning, then showers likely with a chance of thunderstorms
in the afternoon.
.WEDNESDAY NIGHT...South winds 10 to 15 knots, becoming west with
gusts up to 20 knots after midnight. Bay waters slightly choppy.
A chance of thunderstorms. Showers.
.THURSDAY...North winds 10 to 15 knots. Bay waters slightly
choppy. A chance of thunderstorms. Showers likely, mainly in the
morning.

.THURSDAY NIGHT...North winds 5 to 10 knots. Bay waters smooth.
.FRIDAY...Northeast winds 5 to 10 knots. Bay waters smooth.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth.
.SATURDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Bay waters smooth.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters
smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ350-355-231830-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
1232 AM CDT Tue Sep 23 2025

.REST OF TONIGHT...South winds around 15 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 3 feet at 5 seconds. A slight chance of
showers and thunderstorms late.
.TUESDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 5 seconds. A chance of showers and
thunderstorms.
.TUESDAY NIGHT...South winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at
4 seconds.
.WEDNESDAY...South winds 10 to 15 knots with gusts up to
20 knots, diminishing to around 10 knots in the afternoon. Seas
2 to 3 feet. Wave Detail: South 3 feet at 5 seconds. A chance of
thunderstorms. A chance of showers in the morning, then showers
likely in the afternoon.
.WEDNESDAY NIGHT...South winds 10 to 15 knots, becoming west with
gusts up to 20 knots after midnight. Seas 2 to 3 feet. Wave
Detail: South 2 feet at 4 seconds. A chance of thunderstorms.
Showers.
.THURSDAY...North winds 10 to 20 knots. Seas 2 to 3 feet. Wave
Detail: Northwest 2 feet at 3 seconds and south 2 feet at 5
seconds. Showers likely with a chance of thunderstorms in the
morning, then a chance of showers in the afternoon.
.THURSDAY NIGHT...North winds around 10 knots, increasing to
10 to 15 knots after midnight. Seas around 2 feet. A chance of
showers in the evening.
.FRIDAY...North winds 10 to 15 knots, becoming northeast around
10 knots in the afternoon. Seas around 2 feet.
.FRIDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet in
the evening, then 1 foot or less.
.SATURDAY...Northeast winds around 10 knots. Seas around 2 feet
in the morning, then 1 foot or less.
.SATURDAY NIGHT...East winds around 10 knots. Seas around 2 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-231830-
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-
1232 AM CDT Tue Sep 23 2025

.REST OF TONIGHT...South winds around 15 knots with gusts up to
20 knots. Seas 2 to 3 feet. Wave Detail: Southeast 2 feet at
5 seconds. A slight chance of showers and thunderstorms, then a
chance of showers and thunderstorms late.
.TUESDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 5 seconds. A chance of showers and
thunderstorms.
.TUESDAY NIGHT...South winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at
5 seconds.
.WEDNESDAY...South winds 10 to 15 knots with gusts up to 20
knots, diminishing to around 10 knots in the afternoon. Seas 2 to
3 feet. Wave Detail: South 2 feet at 5 seconds. A chance of
showers in the morning, then showers likely with a chance of
thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: South 2 feet at 4 seconds. A chance of
thunderstorms. Showers.
.THURSDAY...North winds 10 to 20 knots with gusts up to 20 knots.
Seas 2 to 3 feet. Wave Detail: Northwest 2 feet at 4 seconds and
south 2 feet at 5 seconds. A chance of thunderstorms. Showers,
mainly in the morning.
.THURSDAY NIGHT...North winds 5 to 10 knots. Seas around 2 feet.
A chance of showers.
.FRIDAY...North winds 10 to 15 knots. Seas around 2 feet.
.FRIDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
.SATURDAY...Northeast winds around 10 knots. Seas 1 foot or less.
.SATURDAY NIGHT...East winds around 10 knots. Seas around 2 feet.

Winds and seas higher in and near thunderstorms.

$$