916
FZUS54 KHGX 200052
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
752 PM CDT Tue Aug 19 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.

GMZ300-201315-
752 PM CDT Tue Aug 19 2025

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

A prevailing landbreeze and seabreeze circulation is expected,
featuring variable to offshore wind directions late at night and
in the morning and a more moderate onshore winds in the
afternoons and evenings. A daily risk of scattered showers and
thunderstorms will continue through the end of the week. Locally
higher winds and rougher seas will be possible in the vicinity of
any thunderstorm.

$$

GMZ335-201315-
Galveston Bay-
752 PM CDT Tue Aug 19 2025

.TONIGHT...Southeast winds 5 to 10 knots, becoming west late. Bay
waters smooth.
.WEDNESDAY...North winds around 5 knots, becoming southeast in
the afternoon. Bay waters smooth. A slight chance of showers and
thunderstorms in the morning, then a chance of showers and
thunderstorms in the afternoon.
.WEDNESDAY NIGHT...East winds 5 to 10 knots, becoming north after
midnight. Bay waters smooth. A chance of showers and
thunderstorms.
.THURSDAY...North winds 5 to 10 knots, becoming east in the
afternoon. Bay waters smooth. Showers likely. A chance of
thunderstorms in the morning, then thunderstorms likely in the
afternoon.
.THURSDAY NIGHT...Southeast winds around 5 knots, becoming west
after midnight. Bay waters smooth. A chance of thunderstorms. A
chance of showers in the evening, then showers likely after
midnight.
.FRIDAY...North winds around 5 knots, becoming east in the
afternoon. Bay waters smooth. Showers likely. A chance of
thunderstorms in the morning, then thunderstorms likely in the
afternoon.
.FRIDAY NIGHT...South winds around 5 knots, becoming southwest
after midnight. Bay waters smooth. A chance of showers and
thunderstorms after midnight.
.SATURDAY...Northwest winds around 5 knots, becoming east in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.SATURDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Bay waters smooth.
.SUNDAY...Northwest winds 5 to 10 knots, becoming east in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.SUNDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Bay waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-201315-
Matagorda Bay-
752 PM CDT Tue Aug 19 2025

.TONIGHT...East to southeast winds 5 to 10 knots, becoming north
late. Bay waters smooth. A slight chance of showers.
.WEDNESDAY...North winds around 5 knots, becoming southeast in
the afternoon. Bay waters smooth. A slight chance of showers and
thunderstorms.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots, becoming west
after midnight. Bay waters smooth. A chance of showers and
thunderstorms after midnight.
.THURSDAY...Northwest winds 5 to 10 knots, becoming south in the
afternoon. Bay waters smooth. A chance of thunderstorms. Showers
likely, mainly in the morning.
.THURSDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Bay waters smooth. A chance of thunderstorms. A
chance of showers in the evening, then showers likely after
midnight.
.FRIDAY...Northwest winds around 5 knots, becoming east in the
afternoon. Bay waters smooth. A chance of thunderstorms. Showers
likely, mainly in the morning.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
after midnight. Bay waters smooth. A chance of showers and
thunderstorms after midnight.
.SATURDAY...Northwest winds around 5 knots, becoming east in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots, becoming
southwest after midnight. Bay waters smooth. A chance of showers
after midnight.
.SUNDAY...Northwest winds around 5 knots, becoming southeast in
the afternoon. Bay waters smooth. A chance of showers and
thunderstorms in the morning.
.SUNDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ350-355-201315-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
752 PM CDT Tue Aug 19 2025

.TONIGHT...Southeast winds 5 to 10 knots, becoming north late.
Seas 1 foot or less. Wave Detail: East 1 foot at 3 seconds. A
slight chance of showers and thunderstorms late.
.WEDNESDAY...North winds around 5 knots, becoming east in the
afternoon. Seas 1 foot or less. Wave Detail: East 1 foot at
3 seconds. A slight chance of showers and thunderstorms.
.WEDNESDAY NIGHT...South winds 5 to 10 knots, becoming northwest
after midnight. Seas 1 foot or less. Wave Detail: East 1 foot at
3 seconds. A chance of showers and thunderstorms after midnight.
.THURSDAY...Northwest winds 5 to 10 knots, becoming southeast in
the afternoon. Seas 1 foot or less. Wave Detail: Northwest 1 foot
at 2 seconds. A chance of thunderstorms. Showers likely, mainly
in the morning.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots, becoming
southwest after midnight. Seas 1 foot or less. Wave Detail: South
1 foot at 2 seconds. A chance of showers in the evening, then
showers likely with a chance of thunderstorms after midnight.
.FRIDAY...Northwest winds 5 to 10 knots, becoming east in the
afternoon. Seas 1 foot or less. Wave Detail: West 1 foot at
2 seconds. A chance of thunderstorms. Showers likely, mainly in
the morning.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots, becoming southwest
after midnight. Seas 1 foot or less. A chance of showers and
thunderstorms after midnight.
.SATURDAY...Northwest winds 5 to 10 knots, becoming east in the
afternoon. Seas 1 foot or less. A chance of showers and
thunderstorms in the morning.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots, becoming
southwest after midnight. Seas 1 foot or less. A chance of
showers after midnight.
.SUNDAY...Northwest winds 5 to 10 knots, becoming east in the
afternoon. Seas 1 foot or less. A chance of showers and
thunderstorms in the morning.
.SUNDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less,
then around 2 feet after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-201315-
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-
752 PM CDT Tue Aug 19 2025

.TONIGHT...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Northeast 1 foot at 3 seconds. A slight chance of showers
late.
.WEDNESDAY...Northeast winds around 5 knots. Seas around 2 feet.
Wave Detail: Northeast 1 foot at 4 seconds. A slight chance of
showers and thunderstorms.
.WEDNESDAY NIGHT...South winds around 5 knots, becoming west
after midnight. Seas around 2 feet in the evening, then 1 foot or
less. Wave Detail: East 1 foot at 3 seconds, becoming northwest
1 foot at 2 seconds and east 1 foot at 3 seconds. A chance of
showers and thunderstorms after midnight.
.THURSDAY...Northwest winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Northwest 1 foot at 2 seconds. A chance of
thunderstorms. Showers likely, mainly in the morning.
.THURSDAY NIGHT...South winds around 5 knots. Seas 1 foot or
less. Wave Detail: South 1 foot at 3 seconds. Showers likely with
a chance of thunderstorms after midnight.
.FRIDAY...Northwest winds 5 to 10 knots, becoming northeast in
the afternoon. Seas 1 foot or less. Wave Detail: West 1 foot at
2 seconds. Showers likely with a chance of thunderstorms in the
morning.
.FRIDAY NIGHT...Southeast winds around 5 knots, becoming south
after midnight. Seas 1 foot or less. A chance of showers and
thunderstorms after midnight.
.SATURDAY...Northwest winds 5 to 10 knots, becoming northeast in
the afternoon. Seas 1 foot or less. Showers likely with a chance
of thunderstorms in the morning.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
after midnight. Seas 1 foot or less. A chance of showers after
midnight.
.SUNDAY...Northwest winds 5 to 10 knots, becoming northeast in
the afternoon. Seas 1 foot or less. A chance of showers and
thunderstorms in the morning.
.SUNDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less,
then around 2 feet after midnight.

Winds and seas higher in and near thunderstorms.

$$