450
FZUS54 KHGX 290525
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
1225 AM CDT Fri Aug 29 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.

GMZ300-291815-
1225 AM CDT Fri Aug 29 2025

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

Light to occasionally moderate onshore flow will persist through
Saturday. A frontal boundary is expected to enhance shower and
thunderstorm activity this weekend. Showers and storms could reach
the coast as early as late afternoon or evening on Friday. Winds
are expected to switch to a more northerly direction by Sunday
behind the front for a brief stretch early next week, before
turning back to being broadly onshore later next week.


$$

GMZ335-291815-
Galveston Bay-
1225 AM CDT Fri Aug 29 2025

.REST OF TONIGHT...South winds 10 to 15 knots. Bay waters
slightly choppy.
.FRIDAY...Southwest winds 5 to 10 knots. Bay waters smooth. A
slight chance of showers and thunderstorms in the afternoon.
.FRIDAY NIGHT...South winds around 10 knots, becoming southwest
after midnight. Bay waters smooth to slightly choppy, diminishing
to smooth after midnight.
.SATURDAY...North winds 5 to 10 knots, becoming east in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters
smooth. A chance of showers and thunderstorms.
.SUNDAY...Northeast winds 5 to 10 knots. Bay waters smooth. A
chance of thunderstorms. Showers likely.
.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. A
chance of showers and thunderstorms.
.MONDAY NIGHT...Northeast winds 5 to 10 knots, becoming north
after midnight. Bay waters smooth. A chance of showers after
midnight.
.TUESDAY...North winds 5 to 10 knots. Bay waters smooth. A chance
of showers and thunderstorms in the morning.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots, becoming west
after midnight. Bay waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-291815-
Matagorda Bay-
1225 AM CDT Fri Aug 29 2025

.REST OF TONIGHT...South winds 10 to 15 knots. Bay waters
slightly choppy.
.FRIDAY...South winds 10 to 15 knots, diminishing to around
10 knots in the afternoon. Bay waters slightly choppy,
diminishing to smooth in the afternoon.
.FRIDAY NIGHT...South winds around 10 knots. Bay waters smooth to
slightly choppy.
.SATURDAY...Southwest winds 5 to 10 knots, becoming southeast in
the afternoon. Bay waters smooth.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters
smooth. A chance of showers after midnight.
.SUNDAY...Southeast 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.
.MONDAY...Northeast winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.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, becoming northeast in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms in the morning.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots, becoming
southwest after midnight. Bay waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ350-355-291815-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
1225 AM CDT Fri Aug 29 2025

.REST OF TONIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: South 2 feet at 5 seconds.
.FRIDAY...Southwest winds 10 to 15 knots, becoming south around
10 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: South
2 feet at 4 seconds.
.FRIDAY NIGHT...South winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 5 seconds.
.SATURDAY...West winds 5 to 10 knots, becoming southeast in the
afternoon. Seas around 2 feet in the morning, then 1 foot or
less. Wave Detail: Southwest 1 foot at 4 seconds and southeast
1 foot at 5 seconds, becoming south 1 foot at 5 seconds. A chance
of showers and thunderstorms.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: South 1 foot at 5 seconds. A chance of
showers. A chance of thunderstorms after midnight.
.SUNDAY...East winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Southeast 1 foot at 4 seconds. A chance of thunderstorms.
Showers likely, mainly in the morning.
.SUNDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less. A
chance of showers. A chance of thunderstorms after midnight.
.MONDAY...Northeast winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. A chance of showers and
thunderstorms.
.MONDAY NIGHT...Northeast winds 5 to 10 knots. Seas 1 foot or
less. A chance of showers. A chance of thunderstorms after
midnight.
.TUESDAY...North winds around 10 knots, becoming northeast in the
afternoon. Seas 1 foot or less. A chance of showers and
thunderstorms in the morning.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots, becoming
southwest after midnight. Seas 1 foot or less.

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-291815-
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-
1225 AM CDT Fri Aug 29 2025

.REST OF TONIGHT...South winds 10 to 15 knots. Seas around
2 feet. Wave Detail: South 2 feet at 4 seconds.
.FRIDAY...South winds 10 to 15 knots, becoming southwest around
10 knots in the afternoon. Seas around 2 feet. Wave Detail: South
2 feet at 5 seconds.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 5 seconds.
.SATURDAY...Southwest winds 5 to 10 knots, becoming east in the
afternoon. Seas around 2 feet in the morning, then 1 foot or
less. Wave Detail: Southwest 1 foot at 4 seconds and southeast
1 foot at 5 seconds. A chance of showers and thunderstorms.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: South 1 foot at 5 seconds. A chance of
showers. A chance of 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 thunderstorms. Showers likely, mainly in
the morning.
.SUNDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less. A
chance of showers. A chance of thunderstorms after midnight.
.MONDAY...Northeast winds 5 to 10 knots. Seas around 2 feet. A
chance of thunderstorms. Showers likely, mainly in the morning.
.MONDAY NIGHT...Northeast winds 5 to 10 knots. Seas around
2 feet. A chance of showers. A chance of thunderstorms after
midnight.
.TUESDAY...North winds 5 to 10 knots. Seas around 2 feet. A
chance of showers and thunderstorms in the morning.
.TUESDAY NIGHT...East winds 5 to 10 knots, becoming southwest
after midnight. Seas 1 foot or less.

Winds and seas higher in and near thunderstorms.

$$