Coastal Waters Forecast
Issued by NWS Houston/Galveston, TX

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864
FZUS54 KHGX 150526
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
1226 AM CDT Sun Jun 15 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.

GMZ300-151815-
Synopsis for High Island to the Matagorda Ship Channel out
60 nautical miles including Galveston and Matagorda Bays
1226 AM CDT Sun Jun 15 2025

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

A daily risk of showers and thunderstorms continues through this
week. Light to moderate onshore flow continues through Tuesday,
with onshore flow increasing somewhat by Wednesday. However,
higher winds and seas will be possible in the vicinity of any
thunderstorm.

$$

GMZ335-151815-
Galveston Bay-
1226 AM CDT Sun Jun 15 2025

.TODAY...South winds 10 to 15 knots. Bay waters slightly choppy.
A chance of showers and thunderstorms.
.TONIGHT...South winds around 10 knots. Bay waters smooth to
slightly choppy. A slight chance of showers and thunderstorms
early in the evening.
.MONDAY...South winds around 10 knots, rising to 10 to 15 knots
in the afternoon. Bay waters slightly choppy. Showers likely
until late afternoon. A chance of thunderstorms in the late
morning and afternoon. A chance of showers late.
.MONDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy. A chance of showers and thunderstorms early in the
evening.
.TUESDAY...South winds 10 to 15 knots. Bay waters slightly
choppy. A chance of showers and thunderstorms.
.TUESDAY NIGHT...South winds around 15 knots. Bay waters slightly
choppy to choppy.
.WEDNESDAY...South winds around 15 knots. Bay waters slightly
choppy to choppy. A chance of showers and thunderstorms.
.WEDNESDAY NIGHT...South winds 10 to 15 knots. Bay waters
slightly choppy.
.THURSDAY...Southeast winds 10 to 15 knots. Bay waters slightly
choppy. A chance of thunderstorms. A chance of showers in the
morning, then showers likely in the afternoon.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
slightly choppy.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-151815-
Matagorda Bay-
1226 AM CDT Sun Jun 15 2025

.TODAY...South winds 10 to 15 knots. Bay waters slightly choppy.
A chance of showers and thunderstorms until late afternoon, then
a slight chance of showers and thunderstorms late.
.TONIGHT...Southeast winds 10 to 15 knots. Bay waters slightly
choppy. A slight chance of showers and thunderstorms until early
morning.
.MONDAY...South winds around 10 knots, rising to 10 to 15 knots
in the late morning and afternoon. Bay waters smooth, rising to
slightly choppy in the late morning and afternoon. A chance of
showers and thunderstorms until late afternoon.
.MONDAY NIGHT...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 around 15 knots. Bay waters slightly
choppy to choppy.
.WEDNESDAY...South winds around 15 knots. Bay waters slightly
choppy to choppy.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
slightly choppy. A chance of showers and thunderstorms after
midnight.
.THURSDAY...Southeast winds 10 to 15 knots. Bay waters slightly
choppy. A chance of thunderstorms. Showers likely.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
slightly choppy. A chance of showers after midnight.

Winds and waves higher in and near thunderstorms.

$$

GMZ350-355-151815-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
1226 AM CDT Sun Jun 15 2025

.TODAY...South winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: Southeast 3 feet at 6 seconds. A slight chance of showers
and thunderstorms early this morning, then a chance of showers
and thunderstorms late this morning and early afternoon. A slight
chance of showers and thunderstorms late.
.TONIGHT...South winds 10 to 15 knots. Seas around 3 feet. Wave
Detail: Southeast 3 feet at 6 seconds. A slight chance of showers
and thunderstorms early in the evening. A slight chance of
showers and thunderstorms after midnight.
.MONDAY...South winds 10 to 15 knots. Seas around 3 feet. Wave
Detail: South 3 feet at 6 seconds. A chance of showers and
thunderstorms until late afternoon.
.MONDAY NIGHT...South winds 10 to 15 knots. Seas around 3 feet.
Wave Detail: South 3 feet at 6 seconds.
.TUESDAY...South winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: South 3 feet at 6 seconds. A chance of showers and
thunderstorms in the morning.
.TUESDAY NIGHT...South winds 15 to 20 knots. Seas 3 to 4 feet.
Wave Detail: South 4 feet at 6 seconds.
.WEDNESDAY...South winds 15 to 20 knots. Seas 3 to 4 feet. A
chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southeast winds around 15 knots. Seas 3 to
4 feet. A chance of showers and thunderstorms after midnight.
.THURSDAY...Southeast winds 10 to 15 knots. Seas 3 to 5 feet. A
chance of thunderstorms. Showers likely, mainly in the morning.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to
5 feet. A chance of showers after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-151815-
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-
1226 AM CDT Sun Jun 15 2025

.TODAY...South winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: Southeast 4 feet at 6 seconds. A slight chance of showers
and thunderstorms.
.TONIGHT...South winds 10 to 15 knots. Seas around 3 feet. Wave
Detail: Southeast 3 feet at 6 seconds. A slight chance of showers
and thunderstorms.
.MONDAY...South winds 10 to 15 knots. Seas around 3 feet. Wave
Detail: Southeast 3 feet at 6 seconds. A chance of showers and
thunderstorms until late afternoon.
.MONDAY NIGHT...South winds 10 to 15 knots. Seas around 3 feet.
Wave Detail: Southeast 3 feet at 6 seconds.
.TUESDAY...South winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: Southeast 3 feet at 6 seconds. A chance of showers and
thunderstorms in the morning.
.TUESDAY NIGHT...South winds around 15 knots, rising to 15 to
20 knots after midnight. Seas around 4 feet. Wave Detail: South
4 feet at 6 seconds.
.WEDNESDAY...South winds 10 to 15 knots. Seas 4 to 5 feet. A
chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southeast winds around 15 knots. Seas 4 to
5 feet. A chance of showers and thunderstorms after midnight.
.THURSDAY...Southeast winds around 15 knots. Seas 4 to 5 feet. A
chance of thunderstorms in the morning. Showers likely.
.THURSDAY NIGHT...Southeast winds around 15 knots. Seas 4 to
5 feet. A chance of showers after midnight.

Winds and seas higher in and near thunderstorms.

$$