036
FZUS54 KHGX 220446
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
1146 PM CDT Mon Jul 21 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.

GMZ300-221730-
1146 PM CDT Mon Jul 21 2025

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

A relatively dry and hot pattern is forecast through the midweek,
with no more than an isolated early morning shower. Expect low
seas and light to occasionally moderate onshore winds to prevail.
Later in the week however, potential for rain and thunderstorms
will increase.

$$

GMZ335-221730-
Galveston Bay-
1146 PM CDT Mon Jul 21 2025

.REST OF TONIGHT...South winds around 10 knots. Bay waters smooth
to slightly choppy.
.TUESDAY...South winds 5 to 10 knots. Bay waters smooth.
.TUESDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.
.WEDNESDAY...Southwest winds 5 to 10 knots, becoming south in the
afternoon. Bay waters smooth.
.WEDNESDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters
smooth.
.THURSDAY...West winds 5 to 10 knots, becoming south in the
afternoon. Bay waters smooth.
.THURSDAY NIGHT...Southwest winds 5 to 10 knots. Bay waters
smooth. A chance of showers and thunderstorms after midnight.
.FRIDAY...Southwest winds 5 to 10 knots, becoming south in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms in the morning, then showers and thunderstorms
likely in the afternoon.
.FRIDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth. A
chance of showers. A chance of thunderstorms after midnight.
.SATURDAY...South winds 5 to 10 knots. Bay waters smooth. A
chance of thunderstorms. Showers likely, mainly in the morning.
.SATURDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-221730-
Matagorda Bay-
1146 PM CDT Mon Jul 21 2025

.REST OF TONIGHT...South winds 10 to 15 knots. Bay waters
slightly choppy.
.TUESDAY...South winds 10 to 15 knots. Bay waters slightly
choppy.
.TUESDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy.
.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...Southwest winds 5 to 10 knots, becoming south in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.FRIDAY NIGHT...South winds around 10 knots. Bay waters smooth to
slightly choppy. A chance of showers after midnight.
.SATURDAY...South winds around 10 knots, increasing to 10 to
15 knots in the afternoon. Bay waters smooth, increasing to
slightly choppy in the afternoon. A chance of showers and
thunderstorms in the morning.
.SATURDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy.

Winds and waves higher in and near thunderstorms.

$$

GMZ350-355-221730-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
1146 PM CDT Mon Jul 21 2025

.REST OF TONIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 2 feet at 5 seconds.
.TUESDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
.TUESDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 2 feet at 6 seconds.
.WEDNESDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 6 seconds.
.WEDNESDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 6 seconds.
.THURSDAY...Southwest winds 5 to 10 knots, becoming south in the
afternoon. Seas around 2 feet. Wave Detail: South 1 foot at
5 seconds.
.THURSDAY NIGHT...South winds around 10 knots. Seas around
2 feet. A chance of showers and thunderstorms after midnight.
.FRIDAY...Southwest winds 5 to 10 knots, becoming south in the
afternoon. Seas around 2 feet. A chance of thunderstorms. Showers
likely.
.FRIDAY NIGHT...South winds 10 to 15 knots. Seas around 2 feet. A
chance of showers. A chance of thunderstorms after midnight.
.SATURDAY...South winds around 10 knots. Seas 2 to 3 feet. A
chance of thunderstorms. A chance of showers.
.SATURDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-221730-
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-
1146 PM CDT Mon Jul 21 2025

.REST OF TONIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: South 2 feet at 4 seconds and southeast 2 feet at
9 seconds.
.TUESDAY...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: South 2 feet at 4 seconds and southeast 1 foot at
9 seconds.
.TUESDAY NIGHT...South winds 5 to 10 knots. Seas 2 to 3 feet.
Wave Detail: South 2 feet at 5 seconds and southeast 1 foot at
8 seconds.
.WEDNESDAY...Southwest winds 5 to 10 knots, becoming south in the
afternoon. Seas around 2 feet. Wave Detail: South 2 feet at
5 seconds and southeast 1 foot at 8 seconds.
.WEDNESDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 5 seconds.
.THURSDAY...Southwest winds 5 to 10 knots, diminishing to around
5 knots in the afternoon. Seas around 2 feet. Wave Detail: South
1 foot at 5 seconds.
.THURSDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
A chance of showers and thunderstorms after midnight.
.FRIDAY...South winds 5 to 10 knots. Seas around 2 feet. Showers
likely with a chance of thunderstorms.
.FRIDAY NIGHT...South winds 5 to 10 knots. Seas 2 to 3 feet. A
chance of showers.
.SATURDAY...South winds around 10 knots. Seas 2 to 3 feet. A
chance of thunderstorms. Showers likely, mainly in the morning.
.SATURDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$