307
FZUS54 KHGX 180015
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
715 PM CDT Thu Sep 17 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.

GMZ300-181315-
715 PM CDT Thu Sep 17 2026

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

Gusty easterly winds and 4 to 6 foot Gulf seas should continue
this evening, before gradually tapering later tonight into Friday.
Lingering showers will also be possible through Friday morning.
Drier conditions are expected Friday afternoon through Saturday,
with a daily risk of isolated to scattered showers and
thunderstorms returning by Sunday or Monday.

$$

GMZ335-181315-
Galveston Bay-
715 PM CDT Thu Sep 17 2026

.REST OF TONIGHT...Southeast winds 10 to 15 knots, becoming east
around 10 knots. Bay waters slightly choppy, diminishing to
smooth.
.FRIDAY...East winds 10 to 15 knots. Bay waters slightly choppy.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots, diminishing to
around 10 knots after midnight. Bay waters slightly choppy,
diminishing to smooth after midnight.
.SATURDAY...East winds 5 to 10 knots. Bay waters smooth.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters
smooth.
.SUNDAY...Southeast winds around 5 knots, increasing to 5 to
10 knots in the afternoon. Bay waters smooth.
.SUNDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.
.MONDAY...Southeast winds 5 to 10 knots. Bay waters smooth.
.MONDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.
.TUESDAY...North winds around 5 knots, becoming east in the
afternoon. Bay waters smooth.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters
smooth.

$$

GMZ330-181315-
Matagorda Bay-
715 PM CDT Thu Sep 17 2026

.REST OF TONIGHT...East winds 10 to 15 knots with gusts up to
20 knots. Bay waters slightly choppy. A chance of showers with a
slight chance of thunderstorms early this evening, then a slight
chance of showers and thunderstorms late this evening.
.FRIDAY...East winds 10 to 15 knots. Bay waters slightly choppy.
A slight chance of showers and thunderstorms in the morning.
.FRIDAY NIGHT...East winds 10 to 15 knots with gusts up to
20 knots, diminishing to around 10 knots after midnight. Bay
waters slightly choppy, diminishing to smooth after midnight.
.SATURDAY...East winds around 10 knots, increasing to 10 to
15 knots in the afternoon. Bay waters smooth, increasing to
slightly choppy in the afternoon.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots, diminishing to
around 10 knots after midnight. Bay waters slightly choppy,
diminishing to smooth after midnight.
.SUNDAY...Southeast winds 5 to 10 knots. Bay waters smooth.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth.
.MONDAY...Southeast winds 5 to 10 knots. Bay waters smooth.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth.
.TUESDAY...East winds 5 to 10 knots. Bay waters smooth.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters
smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ350-355-181315-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
715 PM CDT Thu Sep 17 2026

...SMALL CRAFT SHOULD EXERCISE CAUTION IN EFFECT UNTIL 1 AM CDT
FRIDAY...

.REST OF TONIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet.
Wave Detail: East 4 feet at 5 seconds. A chance of showers with
isolated thunderstorms early this evening. A slight chance of
showers and thunderstorms late.
.FRIDAY...East winds around 15 knots with gusts up to 20 knots.
Seas 3 to 4 feet. Wave Detail: East 4 feet at 6 seconds. A slight
chance of showers and thunderstorms in the morning.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: East 4 feet at 6 seconds.
.SATURDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 7 seconds.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: East 3 feet at 7 seconds.
.SUNDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 6 seconds.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet.
.MONDAY...Southeast winds 5 to 10 knots. Seas around 2 feet.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet.
.TUESDAY...East winds 5 to 10 knots. Seas 1 foot or less.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-181315-
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-
715 PM CDT Thu Sep 17 2026

...SMALL CRAFT SHOULD EXERCISE CAUTION IN EFFECT UNTIL 1 AM CDT
FRIDAY...

.REST OF TONIGHT...East winds 15 to 20 knots with gusts up to
25 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at
6 seconds. A chance of showers with isolated thunderstorms early
this evening. A slight chance of showers and thunderstorms late.
.FRIDAY...East winds around 15 knots with gusts up to 20 knots.
Seas 4 to 5 feet. Wave Detail: East 5 feet at 7 seconds. A slight
chance of showers and thunderstorms.
.FRIDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: East 4 feet at 7 seconds.
.SATURDAY...East winds around 10 knots. Seas 3 to 4 feet. Wave
Detail: East 4 feet at 7 seconds.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: Southeast 3 feet at 6 seconds.
.SUNDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 6 seconds.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet.
.MONDAY...Southeast winds 5 to 10 knots, becoming east in the
afternoon. Seas around 2 feet.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet.
.TUESDAY...East winds 5 to 10 knots. Seas 1 foot or less, then
around 2 feet in the afternoon. A chance of showers and
thunderstorms in the morning.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.

Winds and seas higher in and near thunderstorms.

$$