628
FZUS54 KHGX 101143
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
643 AM CDT Sun Aug 10 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.

GMZ300-110015-
643 AM CDT Sun Aug 10 2025

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

Daily seabreezes will kick wind speeds up into the 12 to 17 knot
range in the afternoons and evenings near the coast and bays.
Otherwise, light onshore winds and low seas will continue to
prevail. Scattered shower and thunderstorm activity is expected
over the next few days. The best chance of showers and storms over
the waters will primarily be during the late night through early
afternoon each day. Towards the end of the work week, onshore flow
increases leading to wave heights in the Gulf increasing to 3 to 5
feet.

$$

GMZ335-110015-
Galveston Bay-
643 AM CDT Sun Aug 10 2025

.TODAY...East winds 5 to 10 knots. Bay waters smooth. A chance of
showers and thunderstorms.
.TONIGHT...Southeast 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.
.SUNDAY...East winds 5 to 10 knots. Bay waters smooth. A chance
of showers and thunderstorms.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth.
A chance of showers and thunderstorms after midnight.
.MONDAY...North winds around 5 knots, becoming southeast in the
afternoon. Bay waters smooth. A chance of thunderstorms. A chance
of showers in the morning, then showers likely in the afternoon.
.MONDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.
.TUESDAY...West winds around 5 knots, becoming southeast in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.TUESDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.
.WEDNESDAY...Southwest winds around 5 knots, becoming southeast
in the afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.WEDNESDAY NIGHT...South winds around 10 knots. Bay waters smooth
to slightly choppy.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-110015-
Matagorda Bay-
643 AM CDT Sun Aug 10 2025

.TODAY...South winds around 5 knots, becoming southeast 10 to 15
knots with gusts up to 20 knots. Bay waters smooth, increasing to
slightly choppy. A chance of showers and thunderstorms.
.TONIGHT...Southeast 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.
.SUNDAY...Southeast winds around 5 knots, increasing to 10 to
15 knots with gusts up to 20 knots in the afternoon. Bay waters
smooth, increasing to slightly choppy in the afternoon. A chance
of showers and thunderstorms.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots with gusts up to
20 knots, becoming south around 10 knots after midnight. Bay
waters slightly choppy, diminishing to smooth after midnight.
.MONDAY...Southwest winds around 5 knots, becoming southeast in
the afternoon. Bay waters smooth. A chance of showers and
thunderstorms in the morning.
.MONDAY NIGHT...Southeast winds 10 to 15 knots, becoming south
around 10 knots after midnight. Bay waters slightly choppy,
diminishing to smooth after midnight.
.TUESDAY...South winds around 5 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, becoming south
around 10 knots after midnight. Bay waters slightly choppy,
diminishing to smooth after midnight.
.WEDNESDAY...South winds around 10 knots, becoming southeast
10 to 15 knots in the afternoon. Bay waters smooth, increasing to
slightly choppy in the afternoon.
.WEDNESDAY NIGHT...South winds 10 to 15 knots. Bay waters
slightly choppy.

Winds and waves higher in and near thunderstorms.

$$

GMZ350-355-110015-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
643 AM CDT Sun Aug 10 2025

.TODAY...Southeast winds 5 to 10 knots, becoming east late this
morning and afternoon. Seas around 2 feet this morning, then
1 foot or less. Wave Detail: Southeast 1 foot at 4 seconds. A
chance of showers and thunderstorms.
.TONIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 4 seconds. A slight chance of
showers and thunderstorms after midnight.
.SUNDAY...East winds 5 to 10 knots. Seas around 2 feet in the
morning, then 1 foot or less. Wave Detail: Southeast 1 foot at
4 seconds, becoming east 1 foot at 4 seconds. A chance of showers
and thunderstorms in the morning.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less, then around 2 feet after midnight. Wave Detail: East 1 foot
at 4 seconds. A chance of showers and thunderstorms after
midnight.
.MONDAY...West winds around 5 knots, becoming southeast in the
afternoon. Seas 1 foot or less, then around 2 feet in the
afternoon. Wave Detail: Southeast 1 foot at 4 seconds. A chance
of showers and thunderstorms in the morning.
.MONDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 5 seconds.
.TUESDAY...Southwest winds 5 to 10 knots, becoming southeast in
the afternoon. Seas around 2 feet. A chance of showers and
thunderstorms in the morning.
.TUESDAY NIGHT...South winds around 10 knots. Seas around 2 feet.
.WEDNESDAY...South winds 5 to 10 knots. Seas around 2 feet. A
chance of showers and thunderstorms in the morning.
.WEDNESDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-110015-
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-
643 AM CDT Sun Aug 10 2025

.TODAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 1 foot at 4 seconds. A chance of showers early this
morning. A slight chance of thunderstorms until late afternoon. A
slight chance of showers late this morning and afternoon.
.TONIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 1 foot at 4 seconds. A chance of showers
and thunderstorms after midnight.
.SUNDAY...East winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 1 foot at 4 seconds. A chance of showers in the
morning. A chance of thunderstorms.
.SUNDAY NIGHT...East winds 5 to 10 knots, becoming south after
midnight. Seas around 2 feet. Wave Detail: East 1 foot at
4 seconds.
.MONDAY...West winds 5 to 10 knots, becoming east in the
afternoon. Seas around 2 feet. Wave Detail: East 1 foot at
4 seconds and south 1 foot at 4 seconds. A chance of showers and
thunderstorms in the morning.
.MONDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 5 seconds.
.TUESDAY...Southwest winds 5 to 10 knots, becoming southeast in
the afternoon. Seas around 2 feet in the morning, then 1 foot or
less. A chance of showers in the morning.
.TUESDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
.WEDNESDAY...South winds 5 to 10 knots. Seas around 2 feet. A
chance of showers and thunderstorms in the morning.
.WEDNESDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$