Coastal Waters Forecast
Issued by NWS Houston/Galveston, TX

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27
260
FZUS54 KHGX 170027
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
727 PM CDT Mon Jun 16 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.

GMZ300-171315-
Synopsis for High Island to the Matagorda Ship Channel out
60 nautical miles including Galveston and Matagorda Bays
727 PM CDT Mon Jun 16 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 the
week. Light to moderate onshore flow continues through Tuesday,
with onshore flow increasing somewhat after Wednesday. However,
higher winds and seas will be possible in the vicinity of any
thunderstorm. Seas will also increase after mid-week into the end
of the week in response to a surface coastal trough along the Deep
South TX coast.

$$

GMZ335-171315-
Galveston Bay-
727 PM CDT Mon Jun 16 2025

.TONIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy. Showers and thunderstorms likely early this evening.
.TUESDAY...South winds 10 to 15 knots. Bay waters slightly
choppy. A slight chance of showers and thunderstorms in the late
morning and afternoon.
.TUESDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy.
.WEDNESDAY...South winds around 15 knots. Bay waters slightly
choppy to choppy.
.WEDNESDAY NIGHT...South winds 10 to 15 knots. Bay waters
slightly choppy.
.THURSDAY...South winds around 10 knots. Bay waters smooth to
slightly choppy. A chance of showers and thunderstorms.
.THURSDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.
.FRIDAY...Southeast winds around 10 knots, rising to 10 to
15 knots in the afternoon. Bay waters smooth, rising to slightly
choppy in the afternoon. A chance of showers and thunderstorms.
.FRIDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy.
.SATURDAY...Southeast winds 10 to 15 knots. Bay waters slightly
choppy. A chance of showers and thunderstorms.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
slightly choppy.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-171315-
Matagorda Bay-
727 PM CDT Mon Jun 16 2025

.TONIGHT...South winds around 10 knots, rising to 10 to 15 knots
after midnight. Bay waters slightly choppy. A slight chance of
showers and thunderstorms early this evening.
.TUESDAY...South winds 10 to 15 knots. Bay waters slightly
choppy.
.TUESDAY NIGHT...South winds 15 to 20 knots. Bay waters 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.
.THURSDAY...Southeast winds around 10 knots. Bay waters smooth to
slightly choppy. A chance of showers and thunderstorms.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
slightly choppy. A chance of showers and thunderstorms after
midnight.
.FRIDAY...Southeast winds around 10 knots, rising to 10 to
15 knots in the afternoon. Bay waters smooth, rising to slightly
choppy in the afternoon. A chance of showers and thunderstorms.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
slightly choppy. A chance of showers after midnight.
.SATURDAY...Southeast winds 10 to 15 knots. Bay waters slightly
choppy. A chance of showers and thunderstorms.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
slightly choppy. A chance of showers.

Winds and waves higher in and near thunderstorms.

$$

GMZ350-355-171315-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
727 PM CDT Mon Jun 16 2025

.TONIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: South 3 feet at 6 seconds. A slight chance of showers and
thunderstorms early this evening.
.TUESDAY...South winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: South 3 feet at 6 seconds. A slight chance of showers and
thunderstorms in the late morning and afternoon.
.TUESDAY NIGHT...South winds 15 to 20 knots. Seas 3 to 5 feet.
Wave Detail: South 4 feet at 6 seconds.
.WEDNESDAY...South winds 15 to 20 knots. Seas 3 to 5 feet. Wave
Detail: South 4 feet at 5 seconds.
.WEDNESDAY NIGHT...South winds 10 to 15 knots. Seas 3 to 5 feet.
Wave Detail: South 4 feet at 6 seconds.
.THURSDAY...Southeast winds 10 to 15 knots. Seas 3 to 5 feet.
Wave Detail: Southeast 4 feet at 6 seconds. A chance of showers
and thunderstorms.
.THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to
4 feet.
.FRIDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. A
chance of showers and thunderstorms.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet.
A chance of showers after midnight.
.SATURDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. A
chance of showers.
.SATURDAY NIGHT...Southeast winds around 15 knots. Seas 3 to
4 feet. A chance of showers after midnight.

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-171315-
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-
727 PM CDT Mon Jun 16 2025

.TONIGHT...South winds around 10 knots, rising to 10 to 15 knots
after midnight. Seas 3 to 4 feet. Wave Detail: South 3 feet at
6 seconds. A slight chance of showers and thunderstorms early
this evening.
.TUESDAY...South winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: South 3 feet at 6 seconds. A slight chance of showers and
thunderstorms.
.TUESDAY NIGHT...South winds around 15 knots, rising to 15 to
20 knots after midnight. Seas 3 to 5 feet. Wave Detail: South
4 feet at 6 seconds.
.WEDNESDAY...South winds around 15 knots. Seas 5 to 6 feet,
occasionally to 8 feet. Wave Detail: South 4 feet at 6 seconds.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 4 to
5 feet. Wave Detail: Southeast 4 feet at 6 seconds.
.THURSDAY...Southeast winds 10 to 15 knots. Seas 4 to 5 feet.
Wave Detail: Southeast 4 feet at 7 seconds. Showers and
thunderstorms likely, mainly in the morning.
.THURSDAY NIGHT...Southeast winds around 10 knots. Seas 4 to
5 feet. A chance of showers after midnight.
.FRIDAY...Southeast winds 10 to 15 knots. Seas 4 to 5 feet. A
chance of showers and thunderstorms.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 4 to 5 feet.
A chance of showers after midnight.
.SATURDAY...Southeast winds 10 to 15 knots. Seas 4 to 5 feet. A
chance of showers.
.SATURDAY NIGHT...Southeast winds around 15 knots. Seas 3 to
4 feet. A chance of showers after midnight.

Winds and seas higher in and near thunderstorms.

$$