Coastal Waters Forecast
Issued by NWS Houston/Galveston, TX

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FZUS54 KHGX 081743
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
1243 PM CDT Tue Sep 8 2026

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.

GMZ300-090615-
1243 PM CDT Tue Sep 8 2026

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

Light winds and low seas will prevail for the next several days.
Daily isolated to scattered showers and storms are expected.
Stronger storms could produce wind gusts to 30 knots, frequent
lightning, and heavy downpours. The best chances will be in the
morning through early afternoon hours. Onshore winds become
moderate towards the end of the week.

$$

GMZ335-090615-
Galveston Bay-
1243 PM CDT Tue Sep 8 2026

.THIS AFTERNOON...East winds around 5 knots, becoming southeast
late. Bay waters smooth. A chance of showers and thunderstorms
early, then a slight chance of showers and thunderstorms late.
.TONIGHT...Southeast winds 5 to 10 knots. Bay waters smooth. A
slight chance of showers with isolated thunderstorms after
midnight.
.WEDNESDAY...East winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.WEDNESDAY NIGHT...East winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms after midnight.
.THURSDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Bay waters smooth. A chance of thunderstorms. A
chance of showers in the morning, then showers likely in the
afternoon.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots, becoming
southwest after midnight. Bay waters smooth. A chance of showers
and thunderstorms after midnight.
.FRIDAY...Southwest winds 5 to 10 knots. Bay waters smooth.
Showers and thunderstorms likely.
.FRIDAY NIGHT...South winds around 10 knots. Bay waters smooth to
slightly choppy. A chance of showers and thunderstorms after
midnight.
.SATURDAY...South winds 5 to 10 knots. Bay waters smooth. A
chance of thunderstorms. A chance of showers.
.SATURDAY NIGHT...South winds around 10 knots. Bay waters smooth
to slightly choppy. A chance of showers and thunderstorms after
midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-090615-
Matagorda Bay-
1243 PM CDT Tue Sep 8 2026

.THIS AFTERNOON...Southeast winds around 10 knots, increasing to
10 to 15 knots late. Bay waters smooth, increasing to slightly
choppy late. A slight chance of showers and thunderstorms early.
.TONIGHT...Southeast winds 10 to 15 knots, diminishing to around
10 knots after midnight. Bay waters slightly choppy, diminishing
to smooth after midnight. A slight chance of showers with
isolated thunderstorms after midnight.
.WEDNESDAY...East 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 and thunderstorms after midnight.
.THURSDAY...East winds around 5 knots, becoming southeast in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.THURSDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms after midnight.
.FRIDAY...South winds 5 to 10 knots. Bay waters smooth. A chance
of showers and thunderstorms in the morning.
.FRIDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy.
.SATURDAY...South winds 10 to 15 knots. Bay waters slightly
choppy.
.SATURDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy.

Winds and waves higher in and near thunderstorms.

$$

GMZ350-355-090615-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
1243 PM CDT Tue Sep 8 2026

.THIS AFTERNOON...Southeast winds around 5 knots, increasing to
5 to 10 knots late. Seas 1 foot or less. Wave Detail: South
1 foot at 4 seconds. A slight chance of showers and thunderstorms
early.
.TONIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 1 foot at 3 seconds. A slight chance of
showers with isolated thunderstorms after midnight.
.WEDNESDAY...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.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: South 1 foot at 4 seconds. A chance of showers
and thunderstorms after midnight.
.THURSDAY...North winds around 5 knots, becoming southeast in the
afternoon. Seas 1 foot or less. Wave Detail: South 1 foot at
5 seconds. Showers and thunderstorms likely, mainly in the
morning.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
after midnight. Seas around 2 feet. Wave Detail: South 2 feet at
5 seconds and south 1 foot at 2 seconds. A chance of showers and
thunderstorms after midnight.
.FRIDAY...Southwest winds 5 to 10 knots. Seas around 2 feet.
Showers and thunderstorms likely, mainly in the morning.
.FRIDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. A
chance of showers and thunderstorms after midnight.
.SATURDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. A
chance of thunderstorms. A chance of showers.
.SATURDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-090615-
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-
1243 PM CDT Tue Sep 8 2026

.THIS AFTERNOON...East winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: South 1 foot at 4 seconds. A slight chance of
showers and thunderstorms early.
.TONIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 1 foot at 3 seconds. A slight chance of
showers with isolated thunderstorms after midnight.
.WEDNESDAY...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.
.WEDNESDAY NIGHT...East winds 5 to 10 knots, becoming southeast
after midnight. Seas 1 foot or less. Wave Detail: South 1 foot at
4 seconds. A chance of showers and thunderstorms after midnight.
.THURSDAY...West winds around 5 knots, becoming east around
5 knots in the afternoon. Seas 1 foot or less. Wave Detail: South
1 foot at 5 seconds. Showers and thunderstorms likely in the
morning.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
after midnight. Seas around 2 feet. Wave Detail: South 2 feet at
5 seconds and south 1 foot at 2 seconds. A chance of showers and
thunderstorms after midnight.
.FRIDAY...Southwest winds 5 to 10 knots. Seas around 2 feet.
Showers and thunderstorms likely, mainly in the morning.
.FRIDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. A
chance of showers and thunderstorms after midnight.
.SATURDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. A
chance of showers and thunderstorms in the morning.
.SATURDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$