783
FZUS54 KHGX 171755
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
1155 AM CST Mon Nov 17 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.

GMZ300-180700-
1155 AM CST Mon Nov 17 2025

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

Onshore flow is beginning to strengthen, but should remain light
to moderate through Tuesday, along with relatively low seas. As
patchy fog develops inland for the next couple of nights, some of
that fog may drift across the upper portions of the Bays during
the late night to early morning hours. The onshore flow is
expected to strengthen late Wednesday into Thursday ahead of an
approaching cold front. Caution flags and potentially Small Craft
Advisories may be needed through early Friday.

$$

GMZ335-180700-
Galveston Bay-
1155 AM CST Mon Nov 17 2025

.THIS AFTERNOON...South winds 10 to 15 knots. Bay waters slightly
choppy.
.TONIGHT...South winds 5 to 10 knots. Bay waters smooth. Patchy
fog after midnight.
.TUESDAY...South winds 5 to 10 knots. Bay waters smooth.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters
smooth. Patchy fog after midnight.
.WEDNESDAY...Southeast winds 5 to 10 knots. Bay waters smooth.
.WEDNESDAY NIGHT...Southeast winds around 10 knots. Bay waters
smooth to slightly choppy.
.THURSDAY...Southeast winds 10 to 15 knots. Bay waters slightly
choppy. A chance of showers in the afternoon.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
slightly choppy. A chance of showers.
.FRIDAY...South winds around 10 knots. Bay waters smooth to
slightly choppy. A chance of thunderstorms. Showers likely,
mainly in the morning.
.FRIDAY NIGHT...South winds around 10 knots, becoming northwest
after midnight. Bay waters smooth to slightly choppy. A chance of
showers after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-180700-
Matagorda Bay-
1155 AM CST Mon Nov 17 2025

.THIS AFTERNOON...Southeast winds 10 to 15 knots with gusts up to
20 knots. Bay waters slightly choppy. A slight chance of showers
and thunderstorms late this morning and early afternoon.
.TONIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy.
.TUESDAY...Southeast winds around 10 knots. Bay waters smooth to
slightly choppy. Patchy fog in the morning.
.TUESDAY NIGHT...Southeast winds around 10 knots. Bay waters
smooth to slightly choppy.
.WEDNESDAY...Southeast winds 10 to 15 knots. Bay waters slightly
choppy. A chance of showers in the morning. Patchy fog in the
morning.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
slightly choppy.
.THURSDAY...Southeast winds around 15 knots, increasing to 15 to
20 knots in the afternoon. Bay waters slightly choppy, increasing
to choppy in the afternoon. A chance of showers.
.THURSDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy. A chance of showers.
.FRIDAY...South winds 10 to 15 knots. Bay waters slightly choppy.
Showers likely in the morning, then a chance of showers and
thunderstorms in the afternoon.
.FRIDAY NIGHT...Southeast winds around 10 knots, becoming
northeast after midnight. Bay waters smooth to slightly choppy,
increasing to slightly choppy after midnight. A chance of
showers.

Winds and waves higher in and near thunderstorms.

$$

GMZ350-355-180700-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
1155 AM CST Mon Nov 17 2025

.THIS AFTERNOON...Southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: Southeast 3 feet at 6 seconds. A slight
chance of showers early, then a slight chance of showers and
thunderstorms early.
.TONIGHT...South winds 10 to 15 knots with gusts up to 20 knots.
Seas 2 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds.
.TUESDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Southeast 3 feet at 5 seconds.
.TUESDAY NIGHT...Southeast winds around 10 knots. Seas 2 to
3 feet. Wave Detail: South 2 feet at 6 seconds.
.WEDNESDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: South 3 feet at 6 seconds.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots with gusts up
to 20 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at
6 seconds.
.THURSDAY...Southeast winds around 15 knots. Seas 2 to 4 feet. A
chance of showers in the afternoon.
.THURSDAY NIGHT...South winds 15 to 20 knots. Seas 3 to 4 feet. A
chance of showers.
.FRIDAY...South winds 10 to 15 knots. Seas 3 to 4 feet. A chance
of showers. A chance of thunderstorms in the afternoon.
.FRIDAY NIGHT...South winds 10 to 15 knots, becoming northwest
after midnight. Seas 2 to 3 feet. A chance of showers.

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-180700-
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-
1155 AM CST Mon Nov 17 2025

.THIS AFTERNOON...Southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: Southeast 2 feet at 6 seconds. A slight
chance of showers and thunderstorms early.
.TONIGHT...South winds 10 to 15 knots with gusts up to 20 knots.
Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds.
.TUESDAY...South winds 10 to 15 knots, becoming southeast around
10 knots in the afternoon. Seas 3 to 4 feet. Wave Detail:
Southeast 3 feet at 6 seconds.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to
4 feet. Wave Detail: South 3 feet at 6 seconds.
.WEDNESDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet.
Wave Detail: Southeast 3 feet at 6 seconds.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots with gusts up
to 20 knots. Seas 3 to 4 feet. Wave Detail: Southeast 4 feet at
5 seconds.
.THURSDAY...Southeast winds around 15 knots. Seas 3 to 4 feet. A
chance of showers in the afternoon.
.THURSDAY NIGHT...South winds 15 to 20 knots. Seas 4 to 5 feet. A
chance of showers.
.FRIDAY...South winds 10 to 15 knots. Seas around 4 feet. A
chance of showers. A chance of thunderstorms in the afternoon.
.FRIDAY NIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet. A
chance of showers. A chance of thunderstorms after midnight.

Winds and seas higher in and near thunderstorms.

$$