Coastal Waters Forecast
Issued by NWS Houston/Galveston, TX

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944
FZUS54 KHGX 300402
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
1102 PM CDT Tue Jul 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.

GMZ300-301715-
1102 PM CDT Tue Jul 29 2025

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

Low seas and light to occasionally moderate winds driven by the
daily seabreeze and landbreeze cycle are expected over the next
several days. Scattered showers and thunderstorms return to the
forecast heading into the weekend. Locally higher winds and waves
possible in the vicinity of thunderstorms later this week.

$$

GMZ335-301715-
Galveston Bay-
1102 PM CDT Tue Jul 29 2025

.OVERNIGHT...Southwest winds 5 to 10 knots. Bay waters smooth.
.WEDNESDAY...West winds 5 to 10 knots, becoming southwest in the
afternoon. Bay waters smooth. A slight chance of showers and
thunderstorms in the afternoon.
.WEDNESDAY NIGHT...Southwest winds around 10 knots. Bay waters
smooth to slightly choppy.
.THURSDAY...Southwest winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.THURSDAY NIGHT...Southwest winds around 10 knots. Bay waters
smooth to slightly choppy.
.FRIDAY...West winds 5 to 10 knots, becoming south in the
afternoon. Bay waters smooth. A 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.
.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, becoming west after
midnight. Bay waters smooth. A chance of showers and
thunderstorms.
.SUNDAY...Northwest winds around 5 knots, becoming south in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.SUNDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-301715-
Matagorda Bay-
1102 PM CDT Tue Jul 29 2025

.OVERNIGHT...South winds 5 to 10 knots, becoming southwest late.
Bay waters smooth.
.WEDNESDAY...West winds 5 to 10 knots, becoming southwest in the
afternoon. Bay waters smooth.
.WEDNESDAY NIGHT...South winds around 10 knots. Bay waters smooth
to slightly choppy.
.THURSDAY...Southwest winds 5 to 10 knots. Bay waters smooth.
.THURSDAY NIGHT...South winds around 10 knots. Bay waters smooth
to slightly choppy.
.FRIDAY...Southwest winds 5 to 10 knots. Bay waters smooth.
.FRIDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.
.SATURDAY...Southwest winds 5 to 10 knots, becoming south in the
afternoon. Bay waters smooth.
.SATURDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.
.SUNDAY...South winds 5 to 10 knots. Bay waters smooth.
.SUNDAY NIGHT...South winds around 10 knots. Bay waters smooth to
slightly choppy.

$$

GMZ350-355-301715-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
1102 PM CDT Tue Jul 29 2025

.OVERNIGHT...Southwest winds 5 to 10 knots, becoming west late.
Seas around 2 feet. Wave Detail: Southeast 2 feet at 6 seconds
and southwest 1 foot at 3 seconds.
.WEDNESDAY...West winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 6 seconds and west 1 foot at
3 seconds. A slight chance of showers and thunderstorms in the
morning.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet. Wave Detail: Southwest 2 feet at 3 seconds and southeast
1 foot at 6 seconds.
.THURSDAY...Southwest winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 5 seconds.
.THURSDAY NIGHT...Southwest winds 10 to 15 knots. Seas around
2 feet. Wave Detail: Southwest 1 foot at 4 seconds.
.FRIDAY...Southwest winds 10 to 15 knots, diminishing to around
10 knots in the afternoon. Seas around 2 feet in the morning,
then 1 foot or less. Wave Detail: Southwest 2 feet at 4 seconds,
becoming south 1 foot at 4 seconds.
.FRIDAY NIGHT...Southwest winds around 10 knots. Seas 1 foot or
less.
.SATURDAY...West winds 5 to 10 knots, becoming southwest in the
afternoon. Seas 1 foot or less. A chance of showers and
thunderstorms.
.SATURDAY NIGHT...Southwest winds around 10 knots. Seas 1 foot or
less. A chance of showers and thunderstorms after midnight.
.SUNDAY...West winds 5 to 10 knots, becoming southwest in the
afternoon. Seas 1 foot or less. A chance of showers and
thunderstorms in the morning.
.SUNDAY 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.

$$

GMZ370-375-301715-
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-
1102 PM CDT Tue Jul 29 2025

.OVERNIGHT...South winds 5 to 10 knots, becoming west late. Seas
around 2 feet. Wave Detail: Southeast 2 feet at 6 seconds and
west 1 foot at 2 seconds.
.WEDNESDAY...West winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 7 seconds and southwest 1 foot at
4 seconds. A slight chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southwest winds around 10 knots, increasing to
10 to 15 knots after midnight. Seas around 2 feet. Wave Detail:
South 2 feet at 5 seconds.
.THURSDAY...Southwest winds 10 to 15 knots, diminishing to around
10 knots in the afternoon. Seas around 2 feet. Wave Detail:
Southwest 2 feet at 3 seconds and southeast 1 foot at 6 seconds.
A chance of showers and thunderstorms in the morning.
.THURSDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less,
then around 2 feet after midnight. Wave Detail: Southwest 1 foot
at 4 seconds, becoming south 1 foot at 3 seconds.
.FRIDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in
the morning, then 1 foot or less. Wave Detail: South 1 foot at
4 seconds.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less.
.SATURDAY...West winds 5 to 10 knots. Seas 1 foot or less. A
chance of showers and thunderstorms in the morning.
.SATURDAY NIGHT...Southwest winds 5 to 10 knots. Seas 1 foot or
less. A chance of showers and thunderstorms after midnight.
.SUNDAY...West winds 5 to 10 knots. Seas 1 foot or less. A chance
of showers and thunderstorms in the morning.
.SUNDAY 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.

$$