658
FZUS54 KHGX 220516
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
1216 AM CDT Fri Aug 22 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.

GMZ300-221830-
1216 AM CDT Fri Aug 22 2025

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

A diffuse frontal boundary will linger near the coast the next
couple days, but with a very weak pressure gradient in place we
will continue to see a prevailing landbreeze and seabreeze
circulation. Expect light offshore wind directions late at night
and in the mornings followed by light onshore winds in the
afternoon and evenings with the passing seabreeze. A daily risk
of scattered showers and thunderstorms continues through the end
of the week. Locally higher winds and rougher seas will be
possible in the vicinity of any thunderstorm.

$$

GMZ335-221830-
Galveston Bay-
1216 AM CDT Fri Aug 22 2025

.REST OF TONIGHT...North winds around 5 knots. Bay waters smooth.
A chance of showers and thunderstorms.
.FRIDAY...North winds around 5 knots, becoming east in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms in the morning, then showers and thunderstorms
likely in the afternoon.
.FRIDAY NIGHT...Northeast winds around 5 knots. Bay waters
smooth. A chance of showers and thunderstorms.
.SATURDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Bay waters smooth. Showers likely. A chance of
thunderstorms in the morning, then thunderstorms likely in the
afternoon.
.SATURDAY NIGHT...Southeast winds around 5 knots, becoming
southwest after midnight. Bay waters smooth. A chance of showers
and thunderstorms.
.SUNDAY...North winds 5 to 10 knots, becoming east in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.SUNDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Bay waters smooth.
.MONDAY...North winds around 5 knots, becoming southeast in the
afternoon. Bay waters smooth.
.MONDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.
.TUESDAY...Northwest winds around 5 knots, becoming southeast in
the afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters
smooth. A chance of showers and thunderstorms after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-221830-
Matagorda Bay-
1216 AM CDT Fri Aug 22 2025

.REST OF TONIGHT...Variable winds around 5 knots, becoming
northwest late. Bay waters smooth. A chance of showers and
thunderstorms.
.FRIDAY...Northwest winds around 5 knots, becoming southeast in
the afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.FRIDAY NIGHT...East winds around 5 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.SATURDAY...Northeast winds 5 to 10 knots. Bay waters smooth. A
chance of thunderstorms. A chance of showers in the morning, then
showers likely in the afternoon.
.SATURDAY NIGHT...East winds 5 to 10 knots, becoming south after
midnight. Bay waters smooth. A chance of showers and
thunderstorms.
.SUNDAY...North winds around 5 knots, becoming east in the
afternoon. Bay waters smooth. A chance of thunderstorms. Showers
likely, mainly in the morning.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots, becoming south
after midnight. Bay waters smooth.
.MONDAY...North winds around 5 knots, becoming southeast in the
afternoon. Bay waters smooth. A chance of showers. A chance of
thunderstorms in the afternoon.
.MONDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms after midnight.
.TUESDAY...South winds 5 to 10 knots. Bay waters smooth. A chance
of showers and thunderstorms.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters
smooth. A chance of showers and thunderstorms after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ350-355-221830-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
1216 AM CDT Fri Aug 22 2025

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

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-221830-
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-
1216 AM CDT Fri Aug 22 2025

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

Winds and seas higher in and near thunderstorms.

$$