Coastal Waters Forecast
Issued by NWS Houston/Galveston, TX

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FZUS54 KHGX 031122
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
622 AM CDT Wed Sep 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.

GMZ300-040015-
622 AM CDT Wed Sep 3 2025

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

Light winds and low seas will remain through early this weekend.
Rain chances decrease significantly by the middle of the week,
though a few isolated morning showers and storms will be possible.
Rain and storm chances increase over the weekend into early next
week.


$$

GMZ335-040015-
Galveston Bay-
622 AM CDT Wed Sep 3 2025

.TODAY...Northwest winds around 5 knots, becoming south late. Bay
waters smooth. A slight chance of showers and thunderstorms late.
.TONIGHT...Southwest winds around 5 knots. Bay waters smooth. A
slight chance of showers and thunderstorms in the evening.
.THURSDAY...West winds around 5 knots, becoming south in the
afternoon. Bay waters smooth.
.THURSDAY NIGHT...South winds around 10 knots. Bay waters smooth
to slightly choppy.
.FRIDAY...South winds 5 to 10 knots. Bay waters smooth.
.FRIDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth.
.SATURDAY...Southeast winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms in the afternoon.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters
smooth. A chance of showers after midnight.
.SUNDAY...East 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.
.SUNDAY NIGHT...East winds around 10 knots. Bay waters smooth to
slightly choppy. A chance of thunderstorms. A chance of showers.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-040015-
Matagorda Bay-
622 AM CDT Wed Sep 3 2025

.TODAY...North winds 5 to 10 knots, becoming southeast late. Bay
waters smooth.
.TONIGHT...South winds 5 to 10 knots, becoming southwest after
midnight. Bay waters smooth.
.THURSDAY...West winds around 5 knots, becoming south in the
afternoon. Bay waters smooth.
.THURSDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy.
.FRIDAY...South winds 5 to 10 knots. Bay waters smooth.
.FRIDAY NIGHT...Southeast winds around 10 knots. Bay waters
smooth to slightly choppy.
.SATURDAY...Southeast winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters
smooth. A chance of showers. A chance of thunderstorms after
midnight.
.SUNDAY...Southeast winds 5 to 10 knots. Bay waters smooth.
Showers likely. A chance of thunderstorms in the morning, then
thunderstorms likely in the afternoon.
.SUNDAY NIGHT...Southeast winds around 10 knots. Bay waters
smooth to slightly choppy. A chance of thunderstorms. Showers
likely.

Winds and waves higher in and near thunderstorms.

$$

GMZ350-355-040015-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
622 AM CDT Wed Sep 3 2025

.TODAY...North winds 5 to 10 knots, becoming southeast late. Seas
1 foot or less, then around 2 feet this afternoon. Wave Detail:
East 1 foot at 4 seconds. A slight chance of showers and
thunderstorms this morning. A slight chance of showers and
thunderstorms late.
.TONIGHT...South winds 5 to 10 knots, becoming southwest after
midnight. Seas around 2 feet. Wave Detail: Southeast 1 foot at
3 seconds.
.THURSDAY...West winds 5 to 10 knots, becoming south in the
afternoon. Seas around 2 feet in the morning, then 1 foot or
less. Wave Detail: Southwest 1 foot at 3 seconds and east 1 foot
at 6 seconds, becoming east 1 foot at 6 seconds.
.THURSDAY NIGHT...South winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 4 seconds.
.FRIDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 4 seconds. A chance of
showers after midnight.
.SATURDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. A
chance of showers and thunderstorms.
.SATURDAY NIGHT...Southeast winds around 10 knots. Seas around
2 feet. A chance of showers. A chance of thunderstorms after
midnight.
.SUNDAY...Southeast winds around 10 knots. Seas around 2 feet. A
chance of thunderstorms. Showers likely.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to 4 feet.
A chance of showers in the evening, then showers likely with a
chance of thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-040015-
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-
622 AM CDT Wed Sep 3 2025

.TODAY...North winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 4 seconds. A slight chance of showers and
thunderstorms until late afternoon.
.TONIGHT...Southeast winds 5 to 10 knots, becoming south after
midnight. Seas around 2 feet. Wave Detail: East 2 feet at
6 seconds. A slight chance of showers and thunderstorms after
midnight.
.THURSDAY...West winds around 5 knots, becoming northwest in the
afternoon. Seas around 2 feet. Wave Detail: East 1 foot at
6 seconds.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 1 foot at 4 seconds.
.FRIDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 1 foot at 4 seconds.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 4 seconds. A chance of
showers after midnight.
.SATURDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. A
chance of showers and thunderstorms.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. A chance of showers. A chance of thunderstorms after
midnight.
.SUNDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. A
chance of thunderstorms. Showers likely.
.SUNDAY NIGHT...Southeast winds around 10 knots. Seas 2 to
4 feet. Showers likely in the evening, then showers likely with a
chance of thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$