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
716
FZUS54 KHGX 040437
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
1137 PM CDT Sun Aug 3 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.

GMZ300-041715-
1137 PM CDT Sun Aug 3 2025

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

Persistent low seas and generally light to occasionally moderate winds
driven by the daily seabreeze and landbreeze cycle prevail.
Expect daily opportunities for isolated to scattered showers and
thunderstorms over the next several days as well. Stronger winds
and rougher seas can occur in the vicinity of any thunderstorms.
In some cases, thunderstorm winds can extend far from the
associated storm. Late in the week, winds may increase modestly,
pushing seas more into the 2 to 3 foot range.

$$

GMZ335-041715-
Galveston Bay-
1137 PM CDT Sun Aug 3 2025

.OVERNIGHT...Southwest winds around 5 knots. Bay waters smooth.
.MONDAY...East winds around 5 knots. Bay waters smooth. A slight
chance of showers and thunderstorms in the morning, then a chance
of showers and thunderstorms in the afternoon.
.MONDAY NIGHT...South winds 5 to 10 knots, becoming west 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 in the afternoon.
.TUESDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.
.WEDNESDAY...South winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms in the afternoon.
.WEDNESDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.
.THURSDAY...Southwest winds around 5 knots, becoming south in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms in the afternoon.
.THURSDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.
.FRIDAY...Southwest winds around 5 knots, becoming south in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.FRIDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-041715-
Matagorda Bay-
1137 PM CDT Sun Aug 3 2025

.OVERNIGHT...South winds 5 to 10 knots. Bay waters smooth.
.MONDAY...South winds 5 to 10 knots. Bay waters smooth. A slight
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 in the afternoon.
.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.
.THURSDAY...South winds 5 to 10 knots. Bay waters smooth.
.THURSDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.
.FRIDAY...South winds 5 to 10 knots. Bay waters smooth.
.FRIDAY NIGHT...South winds around 10 knots. Bay waters smooth to
slightly choppy.

Winds and waves higher in and near thunderstorms.

$$

GMZ350-355-041715-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
1137 PM CDT Sun Aug 3 2025

.OVERNIGHT...South winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: South 1 foot at 4 seconds.
.MONDAY...South winds 5 to 10 knots, becoming southeast in the
afternoon. Seas 1 foot or less. Wave Detail: South 1 foot at
3 seconds. A slight chance of showers and thunderstorms.
.MONDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: South 1 foot at 4 seconds.
.TUESDAY...East winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Southeast 1 foot at 3 seconds.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: Southeast 1 foot at 3 seconds.
.WEDNESDAY...South winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: South 1 foot at 4 seconds. A chance of showers and
thunderstorms in the morning.
.WEDNESDAY NIGHT...South winds around 10 knots. Seas 1 foot or
less.
.THURSDAY...South winds 5 to 10 knots. Seas around 2 feet. A
chance of showers and thunderstorms in the morning.
.THURSDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
.FRIDAY...South winds 5 to 10 knots. Seas around 2 feet. A chance
of showers and thunderstorms in the morning.
.FRIDAY NIGHT...South winds around 10 knots. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-041715-
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-
1137 PM CDT Sun Aug 3 2025

.OVERNIGHT...South winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Southwest 1 foot at 3 seconds.
.MONDAY...Southwest winds around 5 knots, becoming northeast in
the afternoon. Seas 1 foot or less. Wave Detail: Southwest 1 foot
at 3 seconds. A slight chance of showers and thunderstorms.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: South 1 foot at 4 seconds.
.TUESDAY...East winds around 5 knots. Seas 1 foot or less. Wave
Detail: Southwest 1 foot at 4 seconds. A chance of showers and
thunderstorms in the morning.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: Southeast 1 foot at 3 seconds.
.WEDNESDAY...South winds around 5 knots. Seas 1 foot or less.
Wave Detail: South 1 foot at 4 seconds. 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.
.THURSDAY...South winds 5 to 10 knots. Seas around 2 feet. A
chance of showers and thunderstorms in the morning.
.THURSDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
.FRIDAY...South winds 5 to 10 knots. Seas around 2 feet. A chance
of showers and thunderstorms in the morning.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.

Winds and seas higher in and near thunderstorms.

$$