904
FZUS54 KHGX 171103
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
603 AM CDT Mon Aug 17 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.

GMZ300-180000-
603 AM CDT Mon Aug 17 2026

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

A prevailing south to southeast flow and seas of 2-3 feet will
continue for the next several days. High pressure will dominate
the weather pattern, leading to persistent hot and dry weather.

$$

GMZ335-180000-
Galveston Bay-
603 AM CDT Mon Aug 17 2026

.TODAY...West winds around 5 knots, becoming south around 5 knots
early this afternoon, then increasing to 5 to 10 knots late. Bay
waters smooth.
.TONIGHT...South winds 10 to 15 knots, becoming southwest around
10 knots after midnight. Bay waters slightly choppy, diminishing
to smooth after midnight.
.TUESDAY...West winds around 10 knots, becoming south 10 to
15 knots in the afternoon. Bay waters smooth, increasing to
slightly choppy in the afternoon.
.TUESDAY NIGHT...Southwest winds 10 to 15 knots. Bay waters
slightly choppy.
.WEDNESDAY...Southwest winds around 10 knots, becoming south
10 to 15 knots with gusts up to 20 knots in the afternoon. Bay
waters smooth, increasing to slightly choppy in the afternoon.
.WEDNESDAY NIGHT...South winds 10 to 15 knots with gusts up to
20 knots. Bay waters slightly choppy.
.THURSDAY...Southwest winds around 10 knots, becoming south 10 to
15 knots in the afternoon. Bay waters smooth, increasing to
slightly choppy in the afternoon.
.THURSDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy.
.FRIDAY...Southwest winds around 10 knots, becoming south 10 to
15 knots in the afternoon. Bay waters smooth, increasing to
slightly choppy in the afternoon.
.FRIDAY NIGHT...Southwest winds 10 to 15 knots. Bay waters
slightly choppy.

$$

GMZ330-180000-
Matagorda Bay-
603 AM CDT Mon Aug 17 2026

.TODAY...South winds around 5 knots, becoming southeast early
this afternoon, then increasing to 10 to 15 knots late. Bay
waters smooth, increasing to slightly choppy late.
.TONIGHT...South winds 10 to 15 knots, diminishing to around
10 knots after midnight. Bay waters slightly choppy, diminishing
to smooth after midnight.
.TUESDAY...Southwest winds around 10 knots, becoming south 10 to
15 knots in the afternoon. Bay waters smooth, increasing to
slightly choppy in the afternoon.
.TUESDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy.
.WEDNESDAY...South winds 10 to 15 knots. Bay waters slightly
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.
.THURSDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy.
.FRIDAY...South winds 5 to 10 knots. Bay waters smooth.
.FRIDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly
choppy.

$$

GMZ350-355-180000-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
603 AM CDT Mon Aug 17 2026

.TODAY...Southwest winds around 5 knots, becoming southeast early
this afternoon, then becoming south late. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 6 seconds.
.TONIGHT...South winds around 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 4 seconds.
.TUESDAY...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 1 foot at 5 seconds.
.TUESDAY NIGHT...South winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 4 seconds and southeast 1 foot at
8 seconds.
.WEDNESDAY...Southwest winds 10 to 15 knots. Seas around 2 feet.
Wave Detail: South 2 feet at 4 seconds and southeast 1 foot at
9 seconds.
.WEDNESDAY NIGHT...South winds 10 to 15 knots with gusts up to
20 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at
4 seconds and southeast 1 foot at 7 seconds.
.THURSDAY...South winds 10 to 15 knots. Seas 2 to 3 feet.
.THURSDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.
.FRIDAY...Southwest winds 10 to 15 knots, becoming south around
10 knots in the afternoon. Seas 2 to 3 feet.
.FRIDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.

$$

GMZ370-375-180000-
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-
603 AM CDT Mon Aug 17 2026

.TODAY...South winds around 5 knots, becoming southeast this
afternoon. Seas around 2 feet. Wave Detail: Southeast 2 feet at
6 seconds.
.TONIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: Southeast 2 feet at 5 seconds.
.TUESDAY...Southwest winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: South 1 foot at 4 seconds and southeast 1 foot at
8 seconds.
.TUESDAY NIGHT...South winds around 10 knots, increasing to 10 to
15 knots after midnight. Seas around 2 feet. Wave Detail: South
2 feet at 4 seconds and southeast 1 foot at 9 seconds.
.WEDNESDAY...Southwest winds 10 to 15 knots, becoming south
around 10 knots in the afternoon. Seas around 2 feet. Wave
Detail: South 2 feet at 4 seconds and southeast 1 foot at
9 seconds.
.WEDNESDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: South 2 feet at 4 seconds and southeast 2 feet at
7 seconds.
.THURSDAY...Southwest winds 10 to 15 knots, becoming south around
10 knots in the afternoon. Seas 2 to 3 feet.
.THURSDAY NIGHT...South winds around 10 knots, increasing to
10 to 15 knots after midnight. Seas 2 to 3 feet.
.FRIDAY...Southwest winds 5 to 10 knots. Seas 2 to 3 feet.
.FRIDAY NIGHT...South winds around 10 knots, becoming southwest
10 to 15 knots after midnight. Seas around 2 feet.

$$