068
FZUS54 KHGX 111718
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
1218 PM CDT Tue Aug 11 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.

GMZ300-120545-
1218 PM CDT Tue Aug 11 2026

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

A prevailing southerly flow will continue for the next several
days. Wind speeds should increase Wednesday night into Friday as
the pressure gradient tightens. This will allow seas to increase
into the 3 to 5 foot range. As higher pressure builds into the
region from the east, winds and seas should diminish this weekend.

$$

GMZ335-120545-
Galveston Bay-
1218 PM CDT Tue Aug 11 2026

.THIS AFTERNOON...South winds 10 to 15 knots. Bay waters
slightly choppy. A slight chance of showers with isolated
thunderstorms.
.TONIGHT...South winds around 10 knots. Bay waters smooth to
slightly choppy.
.WEDNESDAY...South winds 10 to 15 knots. Bay waters slightly
choppy.
.WEDNESDAY NIGHT...South winds 15 knots with gusts up to 20
knots. Bay waters slightly choppy to choppy.
.THURSDAY...South winds 15 knots with gusts up to 20 knots. Bay
waters slightly choppy to choppy.
.THURSDAY NIGHT...South winds 10 to 15 knots with gusts up to
20 knots. Bay waters slightly choppy.
.FRIDAY...South winds 10 to 15 knots. Bay waters slightly choppy.
.FRIDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy.
.SATURDAY...South winds 5 to 10 knots. Bay waters smooth.
.SATURDAY NIGHT...South winds 10 to 15 knots, becoming southwest
around 10 knots after midnight. Bay waters slightly choppy,
diminishing to smooth after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-120545-
Matagorda Bay-
1218 PM CDT Tue Aug 11 2026

.THIS AFTERNOON...South winds 10 to 15 knots. Bay waters slightly
choppy. A slight chance of showers with isolated thunderstorms.
.TONIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy. A slight chance of showers with isolated thunderstorms in
the evening.
.WEDNESDAY...South winds 10 to 15 knots. Bay waters slightly
choppy.
.WEDNESDAY NIGHT...South winds around 15 knots with gusts up to
20 knots. Bay waters slightly choppy.
.THURSDAY...South winds 15 knots with gusts up to 20 knots. Bay
waters slightly choppy to choppy.
.THURSDAY NIGHT...Southeast winds 15 knots with gusts up to 20
knots. Bay waters slightly choppy to choppy.
.FRIDAY...Southeast winds 10 to 15 knots. Bay waters slightly
choppy.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
slightly choppy.
.SATURDAY...Southeast winds 10 to 15 knots. Bay waters slightly
choppy.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots, becoming south
around 10 knots after midnight. Bay waters slightly choppy,
diminishing to smooth after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ350-355-120545-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
1218 PM CDT Tue Aug 11 2026

.THIS AFTERNOON...South winds around 10 knots. Seas around
2 feet. Wave Detail: South 1 foot at 4 seconds. A slight chance
of showers with isolated thunderstorms.
.TONIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. A slight
chance of showers with isolated thunderstorms in the evening.
.WEDNESDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Southwest 2 feet at 4 seconds.
.WEDNESDAY NIGHT...South winds 15 to 20 knots with gusts up to
25 knots. Seas 2 to 4 feet. Wave Detail: Southwest 2 feet at
4 seconds.
.THURSDAY...South winds 10 to 15 knots with gusts up to 20 knots.
Seas 3 to 4 feet.
.THURSDAY NIGHT...South winds 15 to 20 knots. Seas 3 to 4 feet.
.FRIDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 3 feet.
.SATURDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet.
.SATURDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-120545-
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-
1218 PM CDT Tue Aug 11 2026

.THIS AFTERNOON...Southeast winds 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 5 seconds. A slight chance of showers
with isolated thunderstorms early. A chance of showers with
isolated thunderstorms late.
.TONIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.
.WEDNESDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Southwest 1 foot at 4 seconds.
.WEDNESDAY NIGHT...South winds around 15 knots, increasing to
15 to 20 knots after midnight. Seas 2 to 4 feet. Wave Detail:
Southwest 2 feet at 4 seconds.
.THURSDAY...South winds 10 to 15 knots with gusts up to 20 knots.
Seas 3 to 5 feet. Wave Detail: Southwest 3 feet at 5 seconds.
.THURSDAY NIGHT...Southeast winds 15 to 20 knots. Seas 3 to
5 feet. Wave Detail: Southeast 2 feet at 6 seconds.
.FRIDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet.
.SATURDAY...Southeast winds 5 to 10 knots. Seas around 3 feet.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to
3 feet.

Winds and seas higher in and near thunderstorms.

$$