613
FZUS54 KHGX 201741
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
1241 PM CDT Sun Sep 20 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.

GMZ300-210615-
1241 PM CDT Sun Sep 20 2026

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

Light to occasionally moderate east to southeast winds are expected
through mid week, followed by a modest increase in the winds from
the east to northeast during the second half of the week. There will
be a daily risk of an isolated shower or storm. Gulf seas should
average 2-3 feet, possibly increasing somewhat later in the week.

$$

GMZ335-210615-
Galveston Bay-
1241 PM CDT Sun Sep 20 2026

.THIS AFTERNOON...Southeast winds 5 to 10 knots. Bay waters
smooth. A slight chance of showers and thunderstorms late.
.TONIGHT...South winds 5 to 10 knots. Bay waters smooth.
.MONDAY...Northeast winds around 5 knots, becoming southeast in
the afternoon. Bay waters smooth.
.MONDAY NIGHT...Southeast winds 5 to 10 knots, becoming southwest
after midnight. Bay waters smooth.
.TUESDAY...North winds 5 to 10 knots, becoming east in the
afternoon. Bay waters smooth.
.TUESDAY NIGHT...Southeast winds around 5 knots. Bay waters
smooth.
.WEDNESDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Bay waters smooth.
.WEDNESDAY NIGHT...Southeast winds around 10 knots, becoming east
10 to 15 knots after midnight. Bay waters smooth, increasing to
slightly choppy after midnight.
.THURSDAY...Northeast winds 10 to 15 knots. Bay waters slightly
choppy.
.THURSDAY NIGHT...East winds around 10 knots, becoming northeast
10 to 15 knots after midnight. Bay waters smooth, increasing to
slightly choppy after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-210615-
Matagorda Bay-
1241 PM CDT Sun Sep 20 2026

.THIS AFTERNOON...Southeast winds 5 to 10 knots. Bay waters
smooth.
.TONIGHT...Southeast winds 10 to 15 knots, diminishing to around
10 knots after midnight. Bay waters slightly choppy, diminishing
to smooth after midnight.
.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.
.WEDNESDAY...Northeast winds around 10 knots, becoming east 10 to
15 knots in the afternoon. Bay waters smooth, increasing to
slightly choppy in the afternoon.
.WEDNESDAY NIGHT...East winds 10 to 15 knots, diminishing to
around 10 knots after midnight. Bay waters slightly choppy,
diminishing to smooth after midnight.
.THURSDAY...East winds 10 to 15 knots. Bay waters slightly
choppy.
.THURSDAY NIGHT...East winds 10 to 15 knots, diminishing to
around 10 knots after midnight. Bay waters slightly choppy,
diminishing to smooth after midnight.

$$

GMZ350-355-210615-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
1241 PM CDT Sun Sep 20 2026

.THIS AFTERNOON...East winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 6 seconds. A slight chance of
showers late.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 6 seconds.
.MONDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 1 foot at 5 seconds.
.TUESDAY...Northeast winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. Wave Detail: Southeast 1 foot
at 5 seconds, becoming southeast 1 foot at 4 seconds.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet in the evening, then 1 foot or less. Wave Detail: East
1 foot at 4 seconds. A chance of showers and thunderstorms after
midnight.
.WEDNESDAY...Northeast winds 10 to 15 knots. Seas around 2 feet.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
.THURSDAY...East winds 15 to 20 knots. Seas 2 to 4 feet.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-210615-
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-
1241 PM CDT Sun Sep 20 2026

.THIS AFTERNOON...East winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 2 feet at 6 seconds. A slight chance of
thunderstorms early. A slight chance of showers.
.TONIGHT...Southeast winds 10 to 15 knots, diminishing to around
10 knots after midnight. Seas 2 to 3 feet. Wave Detail: Southeast
2 feet at 6 seconds.
.MONDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 5 seconds.
.TUESDAY...Northeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 4 seconds. A chance of showers
in the morning.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: East 2 feet at 4 seconds. A chance of showers and
thunderstorms after midnight.
.WEDNESDAY...Northeast winds 10 to 15 knots. Seas 2 to 3 feet.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
.THURSDAY...Northeast winds 15 to 20 knots. Seas 2 to 4 feet.
.THURSDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet.

Winds and seas higher in and near thunderstorms.

$$