FZUS54 KHGX 121137
CWFHGX
Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
637 AM CDT Tue May 12 2026
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.
GMZ300-130015-
637 AM CDT Tue May 12 2026
.Synopsis For High Island to the Matagorda Ship Channel Out 60 NM
including Galveston and Matagorda Bays.
Moderate northeast winds will diminish as the day progresses Tuesday
as high pressure settles in across the area. We will probably see a
late afternoon and evening seabreeze (SE winds). Wind regime into
Thursday will be dominated by the landbreeze (light offshore
winds late at night and in the mornings) and seabreeze (onshore
winds in the afternoon and evening). A tightening pressure
gradient will lead to increasing southerly winds and building seas
heading into the weekend.
$$
GMZ335-130015-
Galveston Bay-
637 AM CDT Tue May 12 2026
.TODAY...Northeast winds 5 to 10 knots. Bay waters smooth.
.TONIGHT...South winds around 5 knots, becoming west after
midnight. Bay waters smooth.
.WEDNESDAY...North winds around 5 knots, becoming east in the
afternoon. Bay waters smooth.
.WEDNESDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Bay waters smooth.
.THURSDAY...West winds around 5 knots, becoming south in the
afternoon. Bay waters smooth.
.THURSDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy.
.FRIDAY...South winds 10 to 15 knots. Bay waters slightly choppy.
.FRIDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy.
.SATURDAY...Southeast winds 10 to 15 knots. Bay waters slightly
choppy.
.SATURDAY NIGHT...Southeast winds 15 to 20 knots. Bay waters
choppy.
$$
GMZ330-130015-
Matagorda Bay-
637 AM CDT Tue May 12 2026
.TODAY...Northeast winds 5 to 10 knots, becoming southeast late.
Bay waters smooth.
.TONIGHT...Southeast winds 5 to 10 knots, becoming southwest
after midnight. Bay waters smooth.
.WEDNESDAY...North winds around 5 knots, becoming southeast in
the afternoon. Bay waters smooth.
.WEDNESDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.
.THURSDAY...South winds around 5 knots, increasing to 5 to
10 knots in the afternoon. Bay waters smooth.
.THURSDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy.
.FRIDAY...South winds 10 to 15 knots. Bay waters slightly choppy.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
slightly choppy.
.SATURDAY...Southeast winds 10 to 15 knots. Bay waters slightly
choppy.
.SATURDAY NIGHT...Southeast winds 15 to 20 knots. Bay waters
choppy.
$$
GMZ350-355-130015-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
637 AM CDT Tue May 12 2026
.TODAY...Northeast winds 10 to 15 knots, diminishing to around
10 knots early this afternoon, then becoming east late. Seas 2 to
3 feet. Wave Detail: East 2 feet at 5 seconds.
.TONIGHT...Southeast winds 5 to 10 knots, becoming west after
midnight. Seas around 2 feet. Wave Detail: East 1 foot at
6 seconds.
.WEDNESDAY...North winds around 5 knots, becoming southeast in
the afternoon. Seas around 2 feet. Wave Detail: East 1 foot at
6 seconds.
.WEDNESDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 1 foot at 2 seconds and east 1 foot at
6 seconds.
.THURSDAY...Southwest winds around 5 knots, becoming south in the
afternoon. Seas around 2 feet in the morning, then 1 foot or
less. Wave Detail: Southwest 1 foot at 3 seconds and east 1 foot
at 5 seconds, becoming southeast 1 foot at 4 seconds.
.THURSDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 2 feet at 5 seconds.
.FRIDAY...South winds 10 to 15 knots. Seas 2 to 3 feet.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet.
.SATURDAY...Southeast winds around 15 knots. Seas 3 to 4 feet.
.SATURDAY NIGHT...Southeast winds 15 to 20 knots. Seas 3 to
5 feet.
$$
GMZ370-375-130015-
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-
637 AM CDT Tue May 12 2026
.TODAY...Northeast winds 10 to 15 knots with gusts up to
20 knots, diminishing to around 10 knots late. Seas 2 to 4 feet.
Wave Detail: Northeast 2 feet at 4 seconds and southeast 2 feet
at 7 seconds.
.TONIGHT...East winds 5 to 10 knots, becoming north after
midnight. Seas 2 to 3 feet. Wave Detail: East 2 feet at
6 seconds.
.WEDNESDAY...North winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 6 seconds.
.WEDNESDAY NIGHT...South winds around 5 knots. Seas around
2 feet. Wave Detail: East 2 feet at 6 seconds.
.THURSDAY...Southwest winds around 5 knots, becoming southeast in
the afternoon. Seas around 2 feet in the morning, then 1 foot or
less. Wave Detail: Southwest 1 foot at 3 seconds and east 1 foot
at 6 seconds, becoming east 1 foot at 7 seconds.
.THURSDAY NIGHT...Southeast winds around 10 knots, becoming south
10 to 15 knots after midnight. Seas 2 to 3 feet. Wave Detail:
Southeast 2 feet at 4 seconds and east 1 foot at 7 seconds.
.FRIDAY...South winds 10 to 15 knots. Seas 2 to 3 feet.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet.
.SATURDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet.
.SATURDAY NIGHT...Southeast winds 15 to 20 knots. Seas 3 to
5 feet.
$$
CWFHGX
Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
637 AM CDT Tue May 12 2026
Upper Texas coastal waters from High Island to the Matagorda Ship
Channel out 60 nautical miles including Galveston and Matagorda
Bays.
Seas are provided as a range of the average height of the highest
1/3 of the waves...along with the occasional height of the
average highest 10 percent of the waves.
GMZ300-130015-
637 AM CDT Tue May 12 2026
.Synopsis For High Island to the Matagorda Ship Channel Out 60 NM
including Galveston and Matagorda Bays.
Moderate northeast winds will diminish as the day progresses Tuesday
as high pressure settles in across the area. We will probably see a
late afternoon and evening seabreeze (SE winds). Wind regime into
Thursday will be dominated by the landbreeze (light offshore
winds late at night and in the mornings) and seabreeze (onshore
winds in the afternoon and evening). A tightening pressure
gradient will lead to increasing southerly winds and building seas
heading into the weekend.
$$
GMZ335-130015-
Galveston Bay-
637 AM CDT Tue May 12 2026
.TODAY...Northeast winds 5 to 10 knots. Bay waters smooth.
.TONIGHT...South winds around 5 knots, becoming west after
midnight. Bay waters smooth.
.WEDNESDAY...North winds around 5 knots, becoming east in the
afternoon. Bay waters smooth.
.WEDNESDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Bay waters smooth.
.THURSDAY...West winds around 5 knots, becoming south in the
afternoon. Bay waters smooth.
.THURSDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy.
.FRIDAY...South winds 10 to 15 knots. Bay waters slightly choppy.
.FRIDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy.
.SATURDAY...Southeast winds 10 to 15 knots. Bay waters slightly
choppy.
.SATURDAY NIGHT...Southeast winds 15 to 20 knots. Bay waters
choppy.
$$
GMZ330-130015-
Matagorda Bay-
637 AM CDT Tue May 12 2026
.TODAY...Northeast winds 5 to 10 knots, becoming southeast late.
Bay waters smooth.
.TONIGHT...Southeast winds 5 to 10 knots, becoming southwest
after midnight. Bay waters smooth.
.WEDNESDAY...North winds around 5 knots, becoming southeast in
the afternoon. Bay waters smooth.
.WEDNESDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.
.THURSDAY...South winds around 5 knots, increasing to 5 to
10 knots in the afternoon. Bay waters smooth.
.THURSDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy.
.FRIDAY...South winds 10 to 15 knots. Bay waters slightly choppy.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
slightly choppy.
.SATURDAY...Southeast winds 10 to 15 knots. Bay waters slightly
choppy.
.SATURDAY NIGHT...Southeast winds 15 to 20 knots. Bay waters
choppy.
$$
GMZ350-355-130015-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
637 AM CDT Tue May 12 2026
.TODAY...Northeast winds 10 to 15 knots, diminishing to around
10 knots early this afternoon, then becoming east late. Seas 2 to
3 feet. Wave Detail: East 2 feet at 5 seconds.
.TONIGHT...Southeast winds 5 to 10 knots, becoming west after
midnight. Seas around 2 feet. Wave Detail: East 1 foot at
6 seconds.
.WEDNESDAY...North winds around 5 knots, becoming southeast in
the afternoon. Seas around 2 feet. Wave Detail: East 1 foot at
6 seconds.
.WEDNESDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 1 foot at 2 seconds and east 1 foot at
6 seconds.
.THURSDAY...Southwest winds around 5 knots, becoming south in the
afternoon. Seas around 2 feet in the morning, then 1 foot or
less. Wave Detail: Southwest 1 foot at 3 seconds and east 1 foot
at 5 seconds, becoming southeast 1 foot at 4 seconds.
.THURSDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 2 feet at 5 seconds.
.FRIDAY...South winds 10 to 15 knots. Seas 2 to 3 feet.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet.
.SATURDAY...Southeast winds around 15 knots. Seas 3 to 4 feet.
.SATURDAY NIGHT...Southeast winds 15 to 20 knots. Seas 3 to
5 feet.
$$
GMZ370-375-130015-
Waters from Freeport to Matagorda Ship Channel TX from 20 to
60 NM-Waters from High Island to Freeport TX from 20 to 60 NM-
637 AM CDT Tue May 12 2026
.TODAY...Northeast winds 10 to 15 knots with gusts up to
20 knots, diminishing to around 10 knots late. Seas 2 to 4 feet.
Wave Detail: Northeast 2 feet at 4 seconds and southeast 2 feet
at 7 seconds.
.TONIGHT...East winds 5 to 10 knots, becoming north after
midnight. Seas 2 to 3 feet. Wave Detail: East 2 feet at
6 seconds.
.WEDNESDAY...North winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 6 seconds.
.WEDNESDAY NIGHT...South winds around 5 knots. Seas around
2 feet. Wave Detail: East 2 feet at 6 seconds.
.THURSDAY...Southwest winds around 5 knots, becoming southeast in
the afternoon. Seas around 2 feet in the morning, then 1 foot or
less. Wave Detail: Southwest 1 foot at 3 seconds and east 1 foot
at 6 seconds, becoming east 1 foot at 7 seconds.
.THURSDAY NIGHT...Southeast winds around 10 knots, becoming south
10 to 15 knots after midnight. Seas 2 to 3 feet. Wave Detail:
Southeast 2 feet at 4 seconds and east 1 foot at 7 seconds.
.FRIDAY...South winds 10 to 15 knots. Seas 2 to 3 feet.
.FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet.
.SATURDAY...Southeast winds 10 to 15 knots. Seas 3 to 4 feet.
.SATURDAY NIGHT...Southeast winds 15 to 20 knots. Seas 3 to
5 feet.
$$