861
FZUS54 KHGX 230118
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
818 PM CDT Fri Aug 22 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.

GMZ300-231430-
818 PM CDT Fri Aug 22 2025

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

Light winds and low seas will continue with wind direction
determined by the daily sea breeze, land breeze process. A daily
risk of scattered showers and thunderstorms continues through the
weekend and through much of next week. Coverage will likely be the
lowest Sunday into Monday, but then increase Tuesday and beyond
as another diffuse boundary moves in from the north. Locally
higher winds and rougher seas will be possible in the vicinity of
any thunderstorm.

$$

GMZ335-231430-
Galveston Bay-
818 PM CDT Fri Aug 22 2025

.TONIGHT...Northeast to east winds 5 to 10 knots. Bay waters
smooth. Showers and thunderstorms likely. Some thunderstorms may
produce heavy rainfall until early morning.
.SATURDAY...Northeast 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.
.SATURDAY NIGHT...Southeast winds around 5 knots, becoming west
after midnight. Bay waters smooth. A chance of showers and
thunderstorms.
.SUNDAY...North 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 west after
midnight. Bay waters smooth.
.MONDAY...North winds around 5 knots, becoming southeast in the
afternoon. Bay waters smooth.
.MONDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.
.TUESDAY...Southeast winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters
smooth. A chance of showers and thunderstorms.
.WEDNESDAY...East winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southeast winds around 10 knots. Bay waters
smooth to slightly choppy.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-231430-
Matagorda Bay-
818 PM CDT Fri Aug 22 2025

.TONIGHT...Generally east to northeast winds 5 to 10 knots. Bay
waters smooth. A chance of showers and thunderstorms. Some
thunderstorms may produce heavy rainfall until early morning.
.SATURDAY...North winds 5 to 10 knots, becoming east in the
afternoon. Bay waters smooth. A chance of thunderstorms. A chance
of showers in the morning, then showers likely in the afternoon.
.SATURDAY NIGHT...East winds 5 to 10 knots. Bay waters smooth. A
chance of thunderstorms. A chance of showers in the evening, then
showers likely after midnight.
.SUNDAY...Northeast winds around 5 knots, becoming east in the
afternoon. Bay waters smooth. A chance of thunderstorms. Showers
likely, mainly in the morning.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth.
A chance of showers and thunderstorms after midnight.
.MONDAY...Southeast winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.MONDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms after midnight.
.TUESDAY...South winds 5 to 10 knots. Bay waters smooth. A chance
of showers and thunderstorms.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters
smooth. A chance of showers and thunderstorms after midnight.
.WEDNESDAY...Southeast winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters
smooth. A chance of showers after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ350-355-231430-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
818 PM CDT Fri Aug 22 2025

.TONIGHT...East to northeast winds 5 to 10 knots, becoming south
late. Seas 1 foot or less. Wave Detail: East 1 foot at 2 seconds.
A chance of showers and thunderstorms. Some thunderstorms may
produce heavy rainfall until early morning.
.SATURDAY...North winds 5 to 10 knots, becoming east in the
afternoon. Seas 1 foot or less. Wave Detail: Northeast 1 foot at
2 seconds. A chance of thunderstorms. Showers likely, mainly in
the morning.
.SATURDAY NIGHT...East winds 5 to 10 knots, becoming south after
midnight. Seas 1 foot or less. Wave Detail: East 1 foot at
2 seconds. A chance of thunderstorms. A chance of showers in the
evening, then showers likely after midnight.
.SUNDAY...North winds 5 to 10 knots, becoming east in the
afternoon. Seas 1 foot or less. Wave Detail: Northeast 1 foot at
2 seconds and south 1 foot at 3 seconds. A chance of
thunderstorms. Showers likely, mainly in the morning.
.SUNDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Southeast 1 foot at 3 seconds. A chance of showers
after midnight.
.MONDAY...East winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: South 1 foot at 4 seconds. A chance of showers and
thunderstorms in the morning.
.MONDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. A
chance of showers and thunderstorms after midnight.
.TUESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. A
chance of showers and thunderstorms.
.TUESDAY NIGHT...Southeast winds around 10 knots. Seas around
2 feet. A chance of showers and thunderstorms.
.WEDNESDAY...East winds around 10 knots. Seas around 2 feet. A
chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southeast winds around 10 knots. Seas 2 to
3 feet. A chance of showers after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-231430-
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-
818 PM CDT Fri Aug 22 2025

.TONIGHT...East winds around 5 knots, becoming south after
midnight. Seas 1 foot or less. A chance of showers and
thunderstorms after midnight. Some thunderstorms may produce
heavy rainfall late this evening and early morning.
.SATURDAY...Northwest winds 5 to 10 knots, becoming northeast 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.
.SATURDAY NIGHT...East winds 5 to 10 knots, becoming south after
midnight. Seas 1 foot or less. Wave Detail: Northeast 1 foot at
2 seconds and south 1 foot at 3 seconds. A chance of showers in
the evening, then showers likely with a chance of thunderstorms
after midnight.
.SUNDAY...North winds around 5 knots, becoming east in the
afternoon. Seas 1 foot or less. Wave Detail: South 1 foot at
3 seconds. A chance of thunderstorms. Showers, mainly in the
morning.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: Southeast 1 foot at 4 seconds. A chance of
showers after midnight.
.MONDAY...Southeast winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Southeast 1 foot at 5 seconds. A chance of showers
and thunderstorms in the morning.
.MONDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. A
chance of showers and thunderstorms after midnight.
.TUESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. A
chance of showers and thunderstorms.
.TUESDAY NIGHT...Southeast winds around 10 knots. Seas around
2 feet. A chance of showers and thunderstorms after midnight.
.WEDNESDAY...East winds 5 to 10 knots. Seas around 2 feet. A
chance of thunderstorms. Showers likely, mainly in the morning.
.WEDNESDAY NIGHT...Southeast winds around 10 knots. Seas around
2 feet. A chance of showers after midnight.

Winds and seas higher in and near thunderstorms.

$$