709
FZUS54 KHGX 181702
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
1202 PM CDT Fri Sep 18 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.

GMZ300-190615-
1202 PM CDT Fri Sep 18 2026

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

Occasionally moderate easterly winds continue to linger early
this afternoon but will gradually diminish. Drier conditions are
expected this afternoon through Saturday, with a daily risk of
isolated to scattered showers and thunderstorms. Winds become more
southeasterly by late Saturday.

$$

GMZ335-190615-
Galveston Bay-
1202 PM CDT Fri Sep 18 2026

.THIS AFTERNOON...East winds 10 to 15 knots. Bay waters slightly
choppy.
.TONIGHT...Southeast winds 10 to 15 knots, diminishing to around
10 knots after midnight. Bay waters slightly choppy, diminishing
to smooth after midnight.
.SATURDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Bay waters smooth.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters
smooth.
.SUNDAY...Southeast winds 5 to 10 knots. Bay waters smooth.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth.
.MONDAY...Southeast winds around 5 knots. Bay waters smooth.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth.
.TUESDAY...East winds around 5 knots. Bay waters smooth.
.TUESDAY NIGHT...Southeast winds around 5 knots. Bay waters
smooth.

$$

GMZ330-190615-
Matagorda Bay-
1202 PM CDT Fri Sep 18 2026

.THIS AFTERNOON...East winds 10 to 15 knots with gusts up to
20 knots. Bay waters slightly choppy. A slight chance of showers
with isolated thunderstorms early.
.TONIGHT...East winds 10 to 15 knots with gusts up to 20 knots,
becoming southeast around 10 knots after midnight. Bay waters
slightly choppy, diminishing to smooth after midnight.
.SATURDAY...East winds around 5 knots, becoming southeast 10 to
15 knots in the afternoon. Bay waters smooth, increasing to
slightly choppy in the afternoon.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots, diminishing to
around 10 knots after midnight. Bay waters slightly choppy,
diminishing to smooth after midnight.
.SUNDAY...Southeast winds 5 to 10 knots. Bay waters smooth.
.SUNDAY NIGHT...Southeast winds 10 to 15 knots, diminishing to
around 10 knots after midnight. Bay waters slightly choppy,
diminishing to smooth after midnight.
.MONDAY...Southeast winds 5 to 10 knots. Bay waters smooth.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth.
.TUESDAY...East winds 5 to 10 knots. Bay waters smooth.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters
smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ350-355-190615-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
1202 PM CDT Fri Sep 18 2026

.THIS AFTERNOON...East winds around 15 knots with gusts up to
20 knots. Seas 3 to 4 feet. Wave Detail: East 4 feet at
6 seconds. A slight chance of showers with isolated thunderstorms
early.
.TONIGHT...East winds 10 to 15 knots. Seas 2 to 4 feet. Wave
Detail: East 4 feet at 6 seconds. A slight chance of showers in
the evening.
.SATURDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 3 feet at 7 seconds.
.SATURDAY NIGHT...Southeast winds 10 to 15 knots, diminishing to
around 10 knots after midnight. Seas 2 to 3 feet. Wave Detail:
East 3 feet at 7 seconds.
.SUNDAY...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave
Detail: East 2 feet at 6 seconds.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 6 seconds.
.MONDAY...Southeast winds 5 to 10 knots. Seas around 2 feet.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet.
.TUESDAY...East winds 5 to 10 knots. Seas 1 foot or less.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-190615-
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-
1202 PM CDT Fri Sep 18 2026

.THIS AFTERNOON...East winds around 15 knots with gusts up to
20 knots. Seas 4 to 5 feet. Wave Detail: East 4 feet at
7 seconds. A slight chance of showers. Isolated thunderstorms.
.TONIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet. Wave
Detail: East 4 feet at 7 seconds. A slight chance of showers in
the evening.
.SATURDAY...East winds 5 to 10 knots. Seas 3 to 4 feet. Wave
Detail: East 3 feet at 7 seconds.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to
3 feet. Wave Detail: East 3 feet at 7 seconds and southeast
1 foot at 4 seconds.
.SUNDAY...Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 6 seconds.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet. Wave Detail: Southeast 2 feet at 6 seconds.
.MONDAY...Southeast winds 5 to 10 knots, becoming east in the
afternoon. Seas around 2 feet.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas around
2 feet.
.TUESDAY...East winds 5 to 10 knots. Seas 1 foot or less, then
around 2 feet in the afternoon. A chance of showers in the
morning.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.

Winds and seas higher in and near thunderstorms.

$$