Coastal Waters Forecast
Issued by NWS Houston/Galveston, TX

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FZUS54 KHGX 011902
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
102 PM CST Mon Dec 1 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.

GMZ300-020730-
102 PM CST Mon Dec 1 2025

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

Marine conditions are currently in a relative state of improvement
on the coastal waters, though the emphasis here is very much on
the word relative. Winds and seas are still high enough that small
craft need to exercise caution on the nearshore Gulf waters, and a
small craft advisory remains in effect on the offshore Gulf
waters. Widespread rain and isolated thunderstorms are also still
occurring, mainly over the upper coastal waters - Galveston Bay
and adjacent portions of the Gulf out 60 nm and beyond into the
open Gulf.

This evening, look for winds to become more northerly and
increase again to 20 to 25 knots with gusts to 30 knots as the
coastal low moves off to the east. The Small Craft Advisory on the
offshore waters expands back to include all coastal waters through
tonight and into early Tuesday morning before winds and seas
begin to subside. Advisory-level conditions are expected to
continue on the Gulf waters through the morning while winds remain
above 20 knots, and on the offshore 20-60 nm Gulf waters into the
early afternoon before seas there are finally expected to fall
below 7 feet.

Despite a short respite Tuesday through Wednesday morning, the
unsettled weather pattern will mean another bout with rain,
storms, and potentially even periods of sea fog later in the week
as we deal with another coastal low and frontal passage.

$$

GMZ335-020730-
Galveston Bay-
102 PM CST Mon Dec 1 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM CST THIS EVENING
THROUGH LATE TONIGHT...

.THIS AFTERNOON...North winds 10 to 15 knots. Bay waters slightly
choppy. Showers with a slight chance of thunderstorms.
.TONIGHT...North winds 15 to 25 knots. Bay waters choppy to rough.
Showers likely with a slight chance of thunderstorms in the
evening. Patchy fog in the evening.
.TUESDAY...North winds 15 to 20 knots with gusts up to 25 knots,
diminishing to around 15 knots in the afternoon. Bay waters
choppy, diminishing to slightly choppy in the afternoon.
.TUESDAY NIGHT...East winds 5 to 10 knots. Bay waters smooth.
.WEDNESDAY...Southeast winds 5 to 10 knots. Bay waters smooth. A
chance of showers in the afternoon.
.WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters
slightly choppy. Showers with a chance of thunderstorms.
.THURSDAY...Northeast winds 10 to 15 knots. Bay waters slightly
choppy. A chance of thunderstorms. Showers.
.THURSDAY NIGHT...North winds 10 to 15 knots. Bay waters slightly
choppy. Showers likely.
.FRIDAY...North winds 10 to 15 knots, diminishing to around
10 knots in the afternoon. Bay waters slightly choppy,
diminishing to smooth in the afternoon. Showers likely, mainly in
the morning.
.FRIDAY NIGHT...North winds 5 to 10 knots. Bay waters smooth. A
chance of showers in the evening.

Winds and waves higher in and near thunderstorms.

$$

GMZ330-020730-
Matagorda Bay-
102 PM CST Mon Dec 1 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM CST THIS EVENING
THROUGH LATE TONIGHT...

.THIS AFTERNOON...North winds 10 to 15 knots with gusts up to
20 knots. Bay waters slightly choppy. A slight chance of showers.
Patchy fog.
.TONIGHT...North winds around 20 to 25 knots. Bay waters choppy,
increasing to rough. A chance of showers in the evening. Patchy
fog in the evening.
.TUESDAY...North winds 15 to 20 knots with gusts up to 25 knots,
diminishing to around 15 knots in the afternoon. Bay waters
choppy, diminishing to slightly choppy in the afternoon.
.TUESDAY NIGHT...East winds 5 to 10 knots. Bay waters smooth.
.WEDNESDAY...Southeast winds 5 to 10 knots. Bay waters smooth. A
chance of showers in the afternoon.
.WEDNESDAY NIGHT...Southeast winds around 10 knots, becoming
southwest after midnight. Bay waters smooth to slightly choppy.
Showers with a chance of thunderstorms.
.THURSDAY...North winds around 15 knots, increasing to 15 to
20 knots in the afternoon. Bay waters slightly choppy, increasing
to choppy in the afternoon. A chance of thunderstorms. Showers
likely.
.THURSDAY NIGHT...North winds 15 to 20 knots. Bay waters choppy.
A chance of showers in the evening, then showers likely after
midnight.
.FRIDAY...North winds 10 to 15 knots. Bay waters slightly choppy.
Showers likely, mainly in the morning.
.FRIDAY NIGHT...North winds 5 to 10 knots. Bay waters smooth.

Winds and waves higher in and near thunderstorms.

$$

GMZ350-355-020730-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
102 PM CST Mon Dec 1 2025

...SMALL CRAFT SHOULD EXERCISE CAUTION THROUGH 6 PM CST THIS
EVENING...
...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM CST THIS
EVENING THROUGH TUESDAY MORNING...

.THIS AFTERNOON...North winds 15 to 20 knots. Seas 3 to 6 feet.
Wave Detail: East 5 feet at 6 seconds. Showers with a slight
chance of thunderstorms. Patchy fog late.
.TONIGHT...North winds 20 to 25 knots with gusts up to 30 knots.
Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast
4 feet at 6 seconds. Patchy fog in the evening. A chance of
showers, mainly in the evening.
.TUESDAY...North winds 20 to 25 knots, diminishing to around
15 knots in the afternoon. Seas 4 to 7 feet, occasionally to
8 feet. Wave Detail: Northeast 5 feet at 6 seconds.
.TUESDAY NIGHT...Northeast winds around 10 knots, becoming
southeast after midnight. Seas 2 to 4 feet. Wave Detail:
Northeast 3 feet at 6 seconds.
.WEDNESDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 3 feet at 4 seconds. A chance of showers
in the afternoon.
.WEDNESDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Southeast 3 feet at 5 seconds. Showers with a chance
of thunderstorms.
.THURSDAY...North winds 15 to 20 knots. Seas 3 to 5 feet. Showers
with a chance of thunderstorms.
.THURSDAY NIGHT...North winds 15 to 20 knots. Seas 3 to 5 feet.
Showers likely.
.FRIDAY...North winds 15 to 20 knots, diminishing to around
15 knots in the afternoon. Seas 3 to 5 feet. Showers likely,
mainly in the morning.
.FRIDAY NIGHT...North winds around 10 knots. Seas 2 to 3 feet. A
chance of showers.

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-020730-
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-
102 PM CST Mon Dec 1 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON...

.THIS AFTERNOON...Northeast winds 15 to 25 knots. Seas 5 to
7 feet, occasionally to 8 feet. Wave Detail: Northeast 5 feet at
6 seconds. Showers with a chance of thunderstorms. Patchy fog
late.
.TONIGHT...North winds 20 to 25 knots with gusts up to 30 knots.
Seas 5 to 8 feet, occasionally to 10 feet. Wave Detail: North
7 feet at 6 seconds. Patchy fog in the evening. A chance of
showers.
.TUESDAY...North winds 20 to 25 knots, diminishing to around
20 knots in the afternoon. Seas 5 to 8 feet, occasionally to
10 feet. Wave Detail: North 7 feet at 6 seconds.
.TUESDAY NIGHT...Northeast winds 10 to 15 knots, becoming
southeast after midnight. Seas 3 to 5 feet. Wave Detail:
Northeast 4 feet at 6 seconds.
.WEDNESDAY...Southeast winds 10 to 15 knots. Seas 2 to 4 feet.
Wave Detail: Northeast 3 feet at 6 seconds and southeast 2 feet
at 3 seconds. A chance of showers in the afternoon.
.WEDNESDAY NIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet.
Wave Detail: South 4 feet at 6 seconds. Showers with a chance of
thunderstorms.
.THURSDAY...Northwest winds 15 to 20 knots, becoming northeast in
the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Showers
with a chance of thunderstorms.
.THURSDAY NIGHT...North winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Showers with a chance of thunderstorms in
the evening, then showers likely after midnight.
.FRIDAY...North winds 15 to 20 knots, becoming northeast around
15 knots in the afternoon. Seas 4 to 5 feet. Showers.
.FRIDAY NIGHT...Northeast winds 10 to 15 knots. Seas 2 to 4 feet.
A chance of showers.

Winds and seas higher in and near thunderstorms.

$$