Coastal Waters Forecast
Issued by NWS Houston/Galveston, TX

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189
FZUS54 KHGX 240502
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
1102 PM CST Sun Nov 23 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.

GMZ300-241745-
1102 PM CST Sun Nov 23 2025

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

Look for increasing southeast and building seas overnight and into
Monday. The next weather system will move into Southeast Texas
later today, with the tail end of some showers and isolated storms
toward the coast Monday night. Can not rule out an isolated strong
storm in the Galveston Bay area between about 10pm and 5am. Rain
chances start to taper off Tuesday depending on when a weak cold
front moves off the coast. A secondary, stronger push of cool dry
air will move into the waters late Tuesday night and early
Wednesday morning. North winds should increase to 20 to 25 knots
as this occurs along with building seas offshore. Small Craft
Advisories will be required. Onshore winds resume and increase
later in the week.

$$

GMZ335-241745-
Galveston Bay-
1102 PM CST Sun Nov 23 2025

.REST OF TONIGHT...Southeast winds 10 to 15 knots. Bay waters
slightly choppy. A slight chance of showers late.
.MONDAY...South winds 10 to 15 knots with gusts up to 20 knots.
Bay waters slightly choppy. A chance of showers. Isolated
thunderstorms in the afternoon.
.MONDAY NIGHT...South winds 10 to 15 knots with gusts up to 20
knots. Bay waters slightly choppy. A chance of showers and
isolated storms.
.TUESDAY...Southwest winds 5 to 10 knots, becoming north. Bay
waters smooth. A chance of showers in the morning.
.TUESDAY NIGHT...North winds around 10 knots, increasing to 20
knots after midnight. Bay waters smooth, increasing to choppy
after midnight.
.WEDNESDAY...North winds 20 to 25 knots. Bay waters choppy to
rough.
.WEDNESDAY NIGHT...Northeast winds around 15 knots with gusts up
to 20 knots. Bay waters slightly choppy.
.THURSDAY...Northeast winds 10 to 15 knots. Bay waters slightly
choppy.
.THURSDAY NIGHT...East winds 10 to 15 knots. Bay waters slightly
choppy.
.FRIDAY...East winds 10 to 15 knots. Bay waters slightly choppy.
.FRIDAY NIGHT...Southeast winds 15 to 20 knots. Bay waters
choppy.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-241745-
Matagorda Bay-
1102 PM CST Sun Nov 23 2025

.REST OF TONIGHT...Southeast winds around 15 knots. Bay waters
slightly choppy to choppy.
.MONDAY...South winds 15 to 20 knots with gusts up to 25 knots.
Bay waters choppy. A slight chance of showers. Isolated
thunderstorms in the afternoon.
.MONDAY NIGHT...South winds 10 to 15 knots with gusts up to
20 knots. Bay waters slightly choppy. A chance of showers.
.TUESDAY...West winds 5 to 10 knots, becoming north. Bay waters
smooth.
.TUESDAY NIGHT...Northeast winds around 10 knots, increasing to
20 knots after midnight. Bay waters smooth, increasing to choppy
after midnight.
.WEDNESDAY...North winds 20 to 25 knots. Bay waters choppy.
.WEDNESDAY NIGHT...Northeast winds around 15 knots with gusts up
to 20 knots. Bay waters slightly choppy.
.THURSDAY...Northeast winds 10 to 15 knots. Bay waters slightly
choppy.
.THURSDAY NIGHT...East winds 10 to 15 knots. Bay waters slightly
choppy.
.FRIDAY...East winds around 15 knots, becoming southeast 15 to
20 knots in the afternoon. Bay waters slightly choppy, increasing
to choppy in the afternoon.
.FRIDAY NIGHT...Southeast winds 15 to 20 knots. Bay waters
choppy. A chance of showers after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ350-355-241745-
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 CST Sun Nov 23 2025

.REST OF TONIGHT...Southeast winds near 15 knots with gusts up to
20 knots. Seas 2 to 4 feet. Wave Detail: Southeast 3 feet at 5
seconds. A slight chance of showers late.
.MONDAY...South winds 15 to 20 knots. Seas 3 to 4 feet. Wave
Detail: South 4 feet at 5 seconds. A slight chance of showers.
Isolated thunderstorms in the afternoon.
.MONDAY NIGHT...South winds 15 to 20 knots, becoming southwest
around 15 knots after midnight. Seas 3 to 4 feet. Wave Detail:
South 4 feet at 6 seconds. A chance of showers in the evening,
then showers likely after midnight.
.TUESDAY...Southwest winds 10 to 15 knots, becoming north around
10 knots. Seas 2 to 4 feet. Wave Detail: Southeast 3 feet at 6
seconds. A chance of showers in the morning.
.TUESDAY NIGHT...Northeast winds around 15 knots, becoming north
20 to 25 knots after midnight. Seas 2 to 3 feet, building to 3 to
5 feet after midnight. Wave Detail: South 2 feet at 6 seconds,
becoming northeast 2 feet at 2 seconds and south 2 feet at 6
seconds.
.WEDNESDAY...North winds 20 to 25 knots, becoming northeast
around 20 knots in the afternoon. Seas 4 to 5 feet, occasionally
to 8 feet. Wave Detail: Northeast 3 feet at 4 seconds and
southeast 2 feet at 6 seconds.
.WEDNESDAY NIGHT...Northeast winds 15 to 20 knots with gusts up
to 25 knots. Seas 4 to 5 feet.
.THURSDAY...Northeast winds 15 to 20 knots. Seas 4 to 5 feet.
.THURSDAY NIGHT...East winds around 15 knots. Seas 3 to 4 feet.
.FRIDAY...Southeast winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet.
.FRIDAY NIGHT...Southeast winds 15 to 20 knots. Seas 5 to 7 feet,
occasionally to 9 feet. A chance of showers after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-241745-
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 CST Sun Nov 23 2025

.REST OF TONIGHT...Southeast winds 15 knots with gusts up to 20
knots. Seas 2 to 4 feet. Wave Detail: Southeast 3 feet at 5
seconds. A slight chance of showers late.
.MONDAY...South winds 15 to 20 knots. Seas 3 to 5 feet. Wave
Detail: East 4 feet at 5 seconds.
.MONDAY NIGHT...South winds 15 to 20 knots. Seas 4 to 5 feet.
Wave Detail: South 4 feet at 6 seconds. A chance of showers after
midnight.
.TUESDAY...Southwest winds 10 to 15 knots, becoming north around
10 knots in the afternoon. Seas 3 to 4 feet. Wave Detail:
South 4 feet at 6 seconds. A chance of showers.
.TUESDAY NIGHT...Northeast winds around 15 knots, increasing to
20 to 25 knots after midnight. Seas 3 to 5 feet. Wave Detail:
South 2 feet at 6 seconds. A chance of showers after midnight.
.WEDNESDAY...Northeast winds 20 to 25 knots. Seas 5 to 6 feet,
occasionally to 8 feet. Wave Detail: East 5 feet at 5 seconds and
southwest 1 foot at 5 seconds.
.WEDNESDAY NIGHT...Northeast winds around 20 knots with gusts up
to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet.
.THURSDAY...Northeast winds 15 to 20 knots. Seas 5 to 6 feet,
occasionally to 8 feet.
.THURSDAY NIGHT...East winds around 15 knots. Seas 5 to 6 feet,
occasionally to 8 feet.
.FRIDAY...East winds 15 to 20 knots. Seas 5 to 6 feet,
occasionally to 8 feet.
.FRIDAY NIGHT...Southeast winds around 20 knots. Seas building to
6 to 8 feet, occasionally to 9 feet. A chance of showers after
midnight.

$$