365
FZUS54 KHGX 311711
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
1211 PM CDT Sun Aug 31 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.

GMZ300-010615-
1211 PM CDT Sun Aug 31 2025

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

A weak frontal boundary gradually moving southward across
Southeast Texas, will continue to bring scattered to widespread
showers and thunderstorms to the region through Monday. Some of
the stronger storms will be capable of producing locally heavy
rainfall. Winds outside of storms will generally be light and
variable. However, locally stronger winds in the vicinity of
thunderstorms should be expected. Additionally, the environment
will continue to be supportive of isolated waterspouts today.
While rain chances should dwindle inland, daily isolated to
scattered showers and storms may persist over the Gulf through
mid-week.

$$

GMZ335-010615-
Galveston Bay-
1211 PM CDT Sun Aug 31 2025

.THIS AFTERNOON...Northeast winds 5 to 10 knots. Bay waters
smooth. Showers and thunderstorms likely early, then a chance of
showers and thunderstorms.
.TONIGHT...Northeast winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.MONDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.MONDAY NIGHT...East winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms.
.TUESDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms.
.TUESDAY NIGHT...Southeast winds around 5 knots, becoming
southwest after midnight. Bay waters smooth.
.WEDNESDAY...Northwest winds 5 to 10 knots. Bay waters smooth.
.WEDNESDAY NIGHT...West winds 5 to 10 knots. Bay waters smooth.
.THURSDAY...Northwest winds 5 to 10 knots, becoming south in the
afternoon. Bay waters smooth.
.THURSDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-010615-
Matagorda Bay-
1211 PM CDT Sun Aug 31 2025

.THIS AFTERNOON...East winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms early, then showers and
thunderstorms likely.
.TONIGHT...Northeast winds 5 to 10 knots. Bay waters smooth. A
chance of showers and thunderstorms in the evening, then showers
and thunderstorms likely after midnight.
.MONDAY...Northeast winds 5 to 10 knots, becoming east in the
afternoon. Bay waters smooth. Showers and thunderstorms likely,
mainly in the morning.
.MONDAY NIGHT...Northeast winds 5 to 10 knots. Bay waters smooth.
A chance of showers and thunderstorms.
.TUESDAY...North winds 5 to 10 knots, becoming east in the
afternoon. Bay waters smooth. A chance of showers and
thunderstorms in the morning.
.TUESDAY NIGHT...Southeast winds 5 to 10 knots, becoming
southwest after midnight. Bay waters smooth.
.WEDNESDAY...Northwest winds 5 to 10 knots, becoming northeast in
the afternoon. Bay waters smooth.
.WEDNESDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Bay waters smooth.
.THURSDAY...West winds 5 to 10 knots, becoming southeast in the
afternoon. Bay waters smooth.
.THURSDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ350-355-010615-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
1211 PM CDT Sun Aug 31 2025

.THIS AFTERNOON...Northeast winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: East 1 foot at 2 seconds and south 1 foot at
4 seconds. A chance of showers and thunderstorms.
.TONIGHT...East winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: East 1 foot at 3 seconds and south 1 foot at 4 seconds. A
chance of showers and thunderstorms in the evening, then showers
and thunderstorms likely after midnight.
.MONDAY...East winds around 10 knots. Seas 1 foot or less. Wave
Detail: Northeast 1 foot at 3 seconds. Showers and thunderstorms
likely, mainly in the morning.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: East 1 foot at 3 seconds. A chance of showers and
thunderstorms.
.TUESDAY...Northeast winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Northeast 2 feet at 3 seconds. A chance of showers
and thunderstorms in the morning.
.TUESDAY NIGHT...East winds 5 to 10 knots, becoming southwest
after midnight. Seas around 2 feet.
.WEDNESDAY...Northwest winds 5 to 10 knots. Seas around 2 feet.
.WEDNESDAY NIGHT...South winds 5 to 10 knots, becoming southwest
after midnight. Seas 1 foot or less.
.THURSDAY...Northwest winds 5 to 10 knots, becoming south in the
afternoon. Seas 1 foot or less.
.THURSDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or less.

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-010615-
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-
1211 PM CDT Sun Aug 31 2025

.THIS AFTERNOON...Northeast winds 5 to 10 knots. Seas 1 foot or
less. Wave Detail: Northeast 1 foot at 2 seconds and south 1 foot
at 4 seconds. A chance of showers and thunderstorms.
.TONIGHT...East winds 5 to 10 knots. Seas 1 foot or less. Wave
Detail: Northeast 1 foot at 3 seconds and south 1 foot at
4 seconds. A chance of showers and thunderstorms in the evening,
then showers and thunderstorms likely after midnight.
.MONDAY...Northeast winds 5 to 10 knots. Seas 1 foot or less.
Wave Detail: Northeast 1 foot at 3 seconds. Showers and
thunderstorms likely, mainly in the morning.
.MONDAY NIGHT...East winds 5 to 10 knots. Seas 1 foot or less,
then around 2 feet after midnight. Wave Detail: East 1 foot at
3 seconds. A chance of showers and thunderstorms in the evening,
then showers and thunderstorms likely after midnight.
.TUESDAY...Northeast winds around 10 knots. Seas around 2 feet.
Wave Detail: Northeast 2 feet at 3 seconds. Showers and
thunderstorms likely in the morning.
.TUESDAY NIGHT...East winds 5 to 10 knots. Seas around 2 feet.
.WEDNESDAY...North winds 5 to 10 knots. Seas around 2 feet.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots, becoming
southwest after midnight. Seas 1 foot or less.
.THURSDAY...Northwest winds 5 to 10 knots, becoming north in the
afternoon. Seas 1 foot or less.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or
less.

Winds and seas higher in and near thunderstorms.

$$