Coastal Waters Forecast
Issued by NWS Houston/Galveston, TX

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28
142
FZUS54 KHGX 020433
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
1133 PM CDT Fri Aug 1 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.

GMZ300-021730-
1133 PM CDT Fri Aug 1 2025

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

Persistent low seas and generally light, but occasionally
moderate winds driven by the daily seabreeze and landbreeze cycle
will continue to prevail. Expect daily opportunities for isolated
to scattered showers and thunderstorms into the new week.
Stronger winds and rougher seas can occur in the vicinity of the
thunderstorms. In some cases, thunderstorm winds can extend far
from the associated storm.

$$

GMZ335-021730-
Galveston Bay-
1133 PM CDT Fri Aug 1 2025

.OVERNIGHT...Southwest winds 5 to 10 knots, becoming west late.
Bay waters smooth. A slight chance of showers and thunderstorms
late.
.SATURDAY...Northwest winds 5 to 10 knots, becoming southwest in
the afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots, becoming
northwest 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 east in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.MONDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Bay waters smooth.
.TUESDAY...North 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.
.WEDNESDAY...Southeast winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.WEDNESDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-021730-
Matagorda Bay-
1133 PM CDT Fri Aug 1 2025

.OVERNIGHT...South winds around 10 knots, becoming southwest
late. Bay waters slightly choppy, diminishing to smooth late.
.SATURDAY...West winds 5 to 10 knots, becoming south in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms in the afternoon.
.SATURDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.
.SUNDAY...West winds around 5 knots, becoming south in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms in the morning.
.SUNDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.
.MONDAY...South winds 5 to 10 knots. Bay waters smooth. A chance
of showers and thunderstorms in the afternoon.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth.
.TUESDAY...Southeast 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.
.WEDNESDAY...South winds 5 to 10 knots. Bay waters smooth.
.WEDNESDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ350-355-021730-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
1133 PM CDT Fri Aug 1 2025

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

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-021730-
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-
1133 PM CDT Fri Aug 1 2025

.OVERNIGHT...South winds 5 to 10 knots, becoming southwest late.
Seas 1 foot or less. Wave Detail: Southwest 1 foot at 4 seconds.
.SATURDAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Southwest 1 foot at 3 seconds. A chance of showers and
thunderstorms, mainly in the morning.
.SATURDAY NIGHT...West winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 4 seconds. A chance of showers
and thunderstorms after midnight.
.SUNDAY...West winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: West 1 foot at 3 seconds. Showers likely with a chance of
thunderstorms in the morning, then a chance of showers in the
afternoon.
.SUNDAY NIGHT...South winds around 5 knots. Seas 1 foot or less.
Wave Detail: Southwest 1 foot at 4 seconds. A chance of showers
after midnight.
.MONDAY...West winds around 5 knots, becoming northeast in the
afternoon. Seas 1 foot or less. Wave Detail: Southwest 1 foot at
4 seconds and east 1 foot at 5 seconds. A chance of showers and
thunderstorms.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less. A chance of showers and thunderstorms after midnight.
.TUESDAY...East winds around 5 knots. Seas 1 foot or less. A
chance of showers and thunderstorms.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less.
.WEDNESDAY...South winds 5 to 10 knots. Seas 1 foot or less. A
chance of showers and thunderstorms in the morning.
.WEDNESDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or
less, then around 2 feet after midnight.

Winds and seas higher in and near thunderstorms.

$$