327
FZUS54 KHGX 301156
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
656 AM CDT Sat Aug 30 2025

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.

GMZ300-310015-
656 AM CDT Sat Aug 30 2025

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

A late summer front stalls over Southeast Texas this weekend,
enhancing shower and thunderstorm activity through the holiday.
Winds over the weekend are expected to generally be light and
variable. However, locally stronger winds in the vicinity of
thunderstorms are likely. Winds are expected to turn back to being
broadly onshore later next week as the front drifts south and
dissipates. While rain chances should dwindle inland, daily isolated
to scattered showers and storms may persist over the Gulf.

$$

GMZ335-310015-
Galveston Bay-
656 AM CDT Sat Aug 30 2025

.TODAY...Northwest winds around 5 knots, becoming southeast this
afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.TONIGHT...Southeast winds around 10 knots, becoming east 10 to
15 knots after midnight. Bay waters smooth, increasing to
slightly choppy after midnight. A chance of showers and
thunderstorms.
.SUNDAY...Northeast winds 5 to 10 knots. Bay waters smooth.
Showers likely. A chance of thunderstorms in the morning, then
thunderstorms likely in the afternoon.
.SUNDAY NIGHT...East winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.MONDAY...Northeast winds 5 to 10 knots. Bay waters smooth.
Showers likely with a chance of thunderstorms in the morning,
then showers and thunderstorms likely in the afternoon.
.MONDAY NIGHT...Northeast winds 5 to 10 knots. Bay waters smooth.
A chance of showers and thunderstorms.
.TUESDAY...North winds 5 to 10 knots. Bay waters smooth. A chance
of showers and thunderstorms.
.TUESDAY NIGHT...North winds 5 to 10 knots. Bay waters smooth.
.WEDNESDAY...North winds 5 to 10 knots. Bay waters smooth.
.WEDNESDAY NIGHT...North winds 5 to 10 knots. Bay waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-310015-
Matagorda Bay-
656 AM CDT Sat Aug 30 2025

.TODAY...South winds 5 to 10 knots. Bay waters smooth. A slight
chance of showers and thunderstorms late this morning and
afternoon.
.TONIGHT...Southeast winds around 10 knots, becoming south 10 to
15 knots with gusts up to 20 knots after midnight. Bay waters
smooth, increasing to slightly choppy after midnight. A slight
chance of showers and thunderstorms after midnight.
.SUNDAY...South winds 5 to 10 knots, becoming southeast in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.SUNDAY NIGHT...East winds 10 to 15 knots, diminishing to around
10 knots after midnight. Bay waters slightly choppy, diminishing
to smooth after midnight. A chance of showers and thunderstorms.
.MONDAY...North winds 5 to 10 knots. Bay waters smooth. Showers
likely. A chance of thunderstorms in the morning, then
thunderstorms likely in the afternoon.
.MONDAY NIGHT...East winds 5 to 10 knots, becoming northeast
after midnight. Bay waters smooth. A chance of showers and
thunderstorms.
.TUESDAY...North winds 5 to 10 knots. Bay waters smooth. A chance
of showers and thunderstorms in the morning.
.TUESDAY NIGHT...East winds 5 to 10 knots, becoming northwest
after midnight. Bay waters smooth.
.WEDNESDAY...North winds around 10 knots. Bay waters smooth to
slightly choppy.
.WEDNESDAY NIGHT...Northeast winds 5 to 10 knots. Bay waters
smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ350-355-310015-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
656 AM CDT Sat Aug 30 2025

.TODAY...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 1 foot at 5 seconds. A slight chance of showers
and thunderstorms.
.TONIGHT...Southeast winds around 10 knots, becoming south 10 to
15 knots with gusts up to 20 knots after midnight. Seas 1 foot or
less, then around 2 feet after midnight. Wave Detail: Southeast
1 foot at 5 seconds. A slight chance of showers and thunderstorms
in the evening, then a chance of showers and thunderstorms after
midnight.
.SUNDAY...South winds 5 to 10 knots, becoming east in the
afternoon. Seas 1 foot or less. Wave Detail: Southeast 1 foot at
4 seconds. A chance of showers and thunderstorms.
.SUNDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: East 1 foot at 4 seconds. A chance of showers and
thunderstorms.
.MONDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: East 1 foot at 3 seconds. Showers and thunderstorms
likely in the morning, then showers likely with a chance of
thunderstorms in the afternoon.
.MONDAY NIGHT...East winds 5 to 10 knots, becoming northeast
after midnight. Seas 1 foot or less. Wave Detail: Southeast
1 foot at 4 seconds. A chance of showers and thunderstorms.
.TUESDAY...North winds 5 to 10 knots. Seas around 2 feet in the
morning, then 1 foot or less. A chance of showers and
thunderstorms in the morning.
.TUESDAY NIGHT...East winds 5 to 10 knots, becoming northwest
after midnight. Seas 1 foot or less.
.WEDNESDAY...North winds 10 to 15 knots. Seas around 2 feet.
.WEDNESDAY NIGHT...Northeast winds around 10 knots. Seas 1 foot
or less.

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-310015-
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-
656 AM CDT Sat Aug 30 2025

.TODAY...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 1 foot at 5 seconds. A slight chance of showers
and thunderstorms.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Southeast 1 foot at 5 seconds. A chance of showers
and thunderstorms after midnight.
.SUNDAY...South winds 5 to 10 knots, becoming northeast in the
afternoon. Seas 1 foot or less. Wave Detail: East 1 foot at
4 seconds. A chance of showers and thunderstorms.
.SUNDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: East 1 foot at 3 seconds. A chance of showers and
thunderstorms.
.MONDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Northeast 1 foot at 3 seconds and southeast 1 foot
at 8 seconds. A chance of thunderstorms. Showers likely, mainly
in the morning.
.MONDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 foot or
less, then around 2 feet after midnight. Wave Detail: Northeast
1 foot at 3 seconds, becoming northeast 1 foot at 3 seconds and
southeast 1 foot at 5 seconds. A chance of showers in the
evening, then showers likely with a chance of thunderstorms after
midnight.
.TUESDAY...North winds 10 to 15 knots, diminishing to around
10 knots in the afternoon. Seas around 2 feet. A chance of
showers and thunderstorms in the morning.
.TUESDAY NIGHT...Northeast winds 5 to 10 knots, becoming
northwest after midnight. Seas 1 foot or less, then around 2 feet
after midnight. A chance of showers after midnight.
.WEDNESDAY...North winds 10 to 15 knots. Seas around 2 feet.
.WEDNESDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 foot or
less.

Winds and seas higher in and near thunderstorms.

$$