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FZUS54 KHGX 140421
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
1121 PM CDT Sun Sep 13 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.

GMZ300-141730-
1121 PM CDT Sun Sep 13 2026

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

Light to moderate onshore winds and 2-3 foot seas will prevail
for the next couple days. Look for some late night through early
afternoon isolated to scattered showers and thunderstorms. Look
for increasing easterly winds, building seas, and rain chances
Wednesday night into Thursday evening. Caution or Advisory
conditions could be possible. Winds and seas gradually diminish
late Friday into the weekend.

$$

GMZ335-141730-
Galveston Bay-
1121 PM CDT Sun Sep 13 2026

.REST OF TONIGHT...South winds around 10 knots. Bay waters smooth
to slightly choppy.
.MONDAY...South winds around 10 knots, increasing to 10 to
15 knots in the afternoon. Bay waters smooth, increasing to
slightly choppy in the afternoon. A slight chance of showers and
thunderstorms.
.MONDAY NIGHT...South winds 10 to 15 knots, diminishing to around
10 knots after midnight. Bay waters slightly choppy, diminishing
to smooth after midnight.
.TUESDAY...South winds around 10 knots, becoming southeast 10 to
15 knots in the afternoon. Bay waters smooth, increasing to
slightly choppy in the afternoon.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots, diminishing to
around 10 knots after midnight. Bay waters slightly choppy,
diminishing to smooth after midnight.
.WEDNESDAY...East winds around 10 knots, increasing to 10 to
15 knots in the afternoon. Bay waters smooth, increasing to
slightly choppy in the afternoon.
.WEDNESDAY NIGHT...East winds 15 knots. Bay waters slightly
choppy. A chance of showers and thunderstorms after midnight.
.THURSDAY...East winds around 15 knots. Bay waters slightly
choppy. A chance of showers and thunderstorms in the morning.
.THURSDAY NIGHT...East winds 10 to 15 knots. Bay waters slightly
choppy.
.FRIDAY...East winds 10 to 15 knots. Bay waters slightly choppy.
.FRIDAY NIGHT...East winds 5 to 10 knots. Bay waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-141730-
Matagorda Bay-
1121 PM CDT Sun Sep 13 2026

.REST OF TONIGHT...Southeast winds 10 to 15 knots. Bay waters
slightly choppy.
.MONDAY...South winds 10 to 15 knots. Bay waters slightly choppy.
A chance of showers and thunderstorms, mainly in the morning.
.MONDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to
20 knots. Bay waters slightly choppy.
.TUESDAY...South winds around 10 knots, becoming southeast 10 to
15 knots with gusts up to 20 knots in the afternoon. Bay waters
smooth, increasing to slightly choppy in the afternoon.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
slightly choppy.
.WEDNESDAY...East winds around 10 knots, increasing to 10 to
15 knots in the afternoon. Bay waters smooth, increasing to
slightly choppy in the afternoon.
.WEDNESDAY NIGHT...East winds around 15 knots. Bay waters
slightly choppy. A chance of showers and thunderstorms after
midnight.
.THURSDAY...East winds around 15 knots. Bay waters slightly
choppy. A chance of thunderstorms. Showers likely.
.THURSDAY NIGHT...East winds 10 to 15 knots. Bay waters slightly
choppy.
.FRIDAY...East winds 10 to 15 knots. Bay waters slightly choppy.
.FRIDAY NIGHT...East winds 10 to 15 knots, diminishing to around
10 knots after midnight. Bay waters slightly choppy, diminishing
to smooth after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ350-355-141730-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
1121 PM CDT Sun Sep 13 2026

.REST OF TONIGHT...Southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: South 3 feet at 5 seconds.
.MONDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: South 2 feet at 5 seconds. A chance of showers and
thunderstorms.
.MONDAY NIGHT...South winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at
6 seconds.
.TUESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: South 3 feet at 6 seconds.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots, diminishing to
around 10 knots after midnight. Seas 2 to 3 feet. Wave Detail:
Southeast 3 feet at 6 seconds.
.WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 6 seconds.
.WEDNESDAY NIGHT...East winds around 15 knots with gusts up to
20 knots. Seas 3 to 4 feet. A chance of showers and thunderstorms
after midnight.
.THURSDAY...East winds 15 to 20 knots. Seas 3 to 5 feet. Showers
likely with a chance of thunderstorms in the morning, then a
chance of showers in the afternoon.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet.
.FRIDAY...East winds 10 to 15 knots. Seas 3 to 4 feet.
.FRIDAY NIGHT...East winds 10 to 15 knots, diminishing to around
10 knots after midnight. Seas 2 to 4 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-141730-
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-
1121 PM CDT Sun Sep 13 2026

.REST OF TONIGHT...Southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: South 3 feet at 5 seconds.
.MONDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: South 2 feet at 5 seconds. A chance of showers and
thunderstorms, mainly in the morning.
.MONDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at
6 seconds.
.TUESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 6 seconds.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots, diminishing to
around 10 knots after midnight. Seas 2 to 3 feet. Wave Detail:
Southeast 3 feet at 6 seconds.
.WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 6 seconds.
.WEDNESDAY NIGHT...East winds around 15 knots with gusts up to
20 knots. Seas 3 to 4 feet. A chance of showers and thunderstorms
in the evening, then showers and thunderstorms likely after
midnight.
.THURSDAY...East winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Showers likely with a chance of
thunderstorms in the morning, then a chance of showers in the
afternoon.
.THURSDAY NIGHT...East winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet.
.FRIDAY...East winds 15 to 20 knots. Seas 4 to 5 feet.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet.

Winds and seas higher in and near thunderstorms.

$$