841
FZUS54 KHGX 241038
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
538 AM CDT Sun Aug 24 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.

GMZ300-242315-
538 AM CDT Sun Aug 24 2025

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

Light winds and low seas will continue with wind direction
determined by the daily sea breeze, land breeze process through
Monday before a more predominant onshore flow sets up for the
remainder of the week. A daily risk of isolated showers and
thunderstorms continues into Monday, followed by some increasing
chances Tuesday through Thursday as another weak frontal boundary
sags into parts of Southeast Texas.

$$

GMZ335-242315-
Galveston Bay-
538 AM CDT Sun Aug 24 2025

.TODAY...North winds 5 to 10 knots, becoming southeast around 10
knots this afternoon. Bay waters smooth.
.TONIGHT...South winds 5 to 10 knots, becoming north toward
morning. Bay waters smooth.
.MONDAY...Northeast winds around 5 knots, becoming southeast
around 10 knots in the afternoon. Bay waters smooth.
.MONDAY NIGHT...South 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...East winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.WEDNESDAY...East winds around 10 knots. Bay waters smooth to
slightly choppy. A chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southeast winds around 10 knots. Bay waters
smooth to slightly choppy.
.THURSDAY...Southeast winds around 10 knots. Bay waters smooth to
slightly choppy. A chance of showers and thunderstorms.
.THURSDAY NIGHT...Southeast winds around 10 knots. Bay waters
smooth to slightly choppy.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-242315-
Matagorda Bay-
538 AM CDT Sun Aug 24 2025

.TODAY...North winds 5 to 10 knots, becoming southeast around 10
knots this afternoon. Bay waters smooth. Isolated thunderstorms.
A chance of showers, mainly this morning.
.TONIGHT...Southeast winds 5 to 10 knots. Bay waters smooth.
.MONDAY...Northeast winds around 5 knots, becoming southeast
10 to 15 knots in the afternoon. Bay waters smooth, increasing to
slightly choppy in the afternoon. A chance of showers.
.MONDAY NIGHT...Southeast winds 10 to 15 knots, becoming south
around 10 knots after midnight. Bay waters slightly choppy,
diminishing to smooth after midnight. A chance of showers after
midnight.
.TUESDAY...South winds 5 to 10 knots. Bay waters smooth. A chance
of showers and thunderstorms in the morning, then showers and
thunderstorms likely in the afternoon.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters
smooth. A chance of showers and thunderstorms.
.WEDNESDAY...East winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southeast winds around 10 knots. Bay waters
smooth to slightly choppy.
.THURSDAY...Southeast winds around 10 knots. Bay waters smooth to
slightly choppy. A chance of showers and thunderstorms in the
morning.
.THURSDAY NIGHT...Southeast winds around 10 knots. Bay waters
smooth to slightly choppy.

Winds and waves higher in and near thunderstorms.

$$

GMZ350-355-242315-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
538 AM CDT Sun Aug 24 2025

.TODAY...North winds 5 to 10 knots, becoming east this afternoon.
Seas 1 foot or less. Wave Detail: Northeast 1 foot at 2 seconds.
A chance of showers with isolated thunderstorms this morning,
then a slight chance of showers with isolated thunderstorms early
this afternoon.
.TONIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: East 1 foot at 2 seconds.
.MONDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Seas 1 foot or less. Wave Detail: Northeast 1 foot at
3 seconds. A chance of showers in the morning.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less, then around 2 feet after midnight. Wave Detail: Southeast
1 foot at 5 seconds. A chance of showers after midnight.
.TUESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 1 foot at 5 seconds. A chance of showers
and thunderstorms.
.TUESDAY NIGHT...Southeast winds around 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 6 seconds. A chance of
showers and thunderstorms.
.WEDNESDAY...East winds 5 to 10 knots. Seas around 2 feet. A
chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southeast winds around 10 knots. Seas 2 to
3 feet.
.THURSDAY...Southeast winds around 10 knots. Seas 2 to 3 feet. A
chance of showers and thunderstorms in the morning.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
3 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-242315-
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-
538 AM CDT Sun Aug 24 2025

.TODAY...Variable winds 5 to 10 knots, becoming southeast late.
Seas 1 foot or less. Isolated thunderstorms.
.TONIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: East 1 foot at 3 seconds.
.MONDAY...East winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: East 1 foot at 4 seconds. A chance of showers.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less, then around 2 feet after midnight. Wave Detail: East 1 foot
at 4 seconds, becoming southeast 1 foot at 5 seconds. A chance of
showers after midnight.
.TUESDAY...Southeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 1 foot at 6 seconds. Showers and
thunderstorms likely, mainly in the morning.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 6 seconds. A chance of
showers and thunderstorms.
.WEDNESDAY...East winds 5 to 10 knots. Seas around 2 feet.
Showers and thunderstorms likely, mainly in the morning.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
3 feet. A chance of showers and thunderstorms after midnight.
.THURSDAY...Southeast winds around 10 knots. Seas 2 to 3 feet. A
chance of showers and thunderstorms in the morning.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 2 to
4 feet.

Winds and seas higher in and near thunderstorms.

$$