Coastal Waters Forecast
Issued by NWS Houston/Galveston, TX

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29
946
FZUS54 KHGX 070605
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
1205 AM CST Sun Dec 7 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.

GMZ300-071915-
1205 AM CST Sun Dec 7 2025

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

Areas of fog, becoming dense at times, will continue in the Bays
and near shore waters through daybreak with patchy fog possible
lingering into the morning hours. Light onshore flow will persist
through the morning, then a cold front will push through during
the afternoon ushering in strong northerly winds. Small Craft
Advisories are in effect during the late afternoon into Monday
morning. Occasional gusts to gale force cannot be ruled out
offshore in the open Gulf. Winds and seas should gradually improve
by Monday afternoon, with onshore flow returning by Tuesday. May
need to monitor the potential for sea fog by midweek.

$$

GMZ335-071915-
Galveston Bay-
1205 AM CST Sun Dec 7 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CST THIS MORNING...
...SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH
MONDAY MORNING...

.REST OF TONIGHT...South winds 5 to 10 knots. Bay waters smooth.
Areas of dense fog.
.SUNDAY...West winds around 5 knots, becoming northwest 10 to
15 knots with gusts up to 20 knots in the afternoon. Bay waters
smooth, increasing to slightly choppy in the afternoon. Areas of
dense fog in the morning.
.SUNDAY NIGHT...North winds 15 to 20 knots with gusts up to
30 knots. Bay waters choppy.
.MONDAY...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.
.MONDAY NIGHT...Northeast winds 5 to 10 knots. Bay waters smooth.
.TUESDAY...East winds 5 to 10 knots, becoming southeast in the
afternoon. Bay waters smooth.
.TUESDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.
.WEDNESDAY...Southwest winds around 10 knots. Bay waters smooth
to slightly choppy.
.WEDNESDAY NIGHT...South winds 10 to 15 knots. Bay waters
slightly choppy.
.THURSDAY...Southwest winds 10 to 15 knots. Bay waters slightly
choppy.
.THURSDAY NIGHT...Southwest winds 10 to 15 knots, becoming
northwest after midnight. Bay waters slightly choppy.

$$

GMZ330-071915-
Matagorda Bay-
1205 AM CST Sun Dec 7 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CST THIS MORNING...
...SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH
MONDAY MORNING...

.REST OF TONIGHT...Southwest winds around 5 knots. Bay waters
smooth. Areas of dense fog.
.SUNDAY...West winds around 10 knots, becoming northwest 15 to
20 knots with gusts up to 25 knots in the afternoon. Bay waters
smooth, increasing to choppy in the afternoon. Areas of fog in
the morning.
.SUNDAY NIGHT...North winds 20 to 25 knots with gusts up to
30 knots. Bay waters rough.
.MONDAY...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.
.MONDAY NIGHT...Northeast winds 5 to 10 knots. Bay waters smooth.
.TUESDAY...Northeast winds 5 to 10 knots, becoming southeast in
the afternoon. Bay waters smooth.
.TUESDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth.
.WEDNESDAY...Southwest winds 10 to 15 knots. Bay waters slightly
choppy.
.WEDNESDAY NIGHT...South winds 10 to 15 knots. Bay waters
slightly choppy.
.THURSDAY...Southwest winds 10 to 15 knots. Bay waters slightly
choppy.
.THURSDAY NIGHT...South winds 10 to 15 knots, becoming west after
midnight. Bay waters slightly choppy.

$$

GMZ350-355-071915-
Coastal waters from Freeport to Matagorda Ship Channel TX out
20 NM-Coastal waters from High Island to Freeport TX out 20 NM-
1205 AM CST Sun Dec 7 2025

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CST THIS MORNING...
...SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH
MONDAY MORNING...

.REST OF TONIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 5 seconds. Patchy, dense fog.
.SUNDAY...West winds around 10 knots, becoming northwest 15 to
20 knots in the afternoon. Seas around 2 feet. Wave Detail: West
2 feet at 3 seconds and southeast 1 foot at 5 seconds. A slight
chance of showers and thunderstorms in the morning. Patchy fog in
the morning.
.SUNDAY NIGHT...North winds 20 to 25 knots with gusts up to
30 knots. Seas 3 to 5 feet. Wave Detail: North 4 feet at
4 seconds.
.MONDAY...North winds 20 to 25 knots, diminishing to around
15 knots in the afternoon. Seas 3 to 5 feet. Wave Detail:
Northeast 4 feet at 5 seconds.
.MONDAY NIGHT...Northeast winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: Northeast 3 feet at 5 seconds.
.TUESDAY...East winds 5 to 10 knots, becoming southeast in the
afternoon. Seas around 2 feet. Wave Detail: East 2 feet at
5 seconds.
.TUESDAY NIGHT...South winds around 10 knots, increasing to 10 to
15 knots after midnight. Seas around 2 feet.
.WEDNESDAY...Southwest winds 10 to 15 knots. Seas 2 to 3 feet.
.WEDNESDAY NIGHT...South winds around 15 knots, becoming
southwest 15 to 20 knots after midnight. Seas 2 to 3 feet.
.THURSDAY...Southwest winds around 15 knots. Seas 2 to 3 feet.
.THURSDAY NIGHT...Southwest winds around 15 knots, becoming west
after midnight. Seas 2 to 3 feet.

Winds and seas higher in and near thunderstorms.

$$

GMZ370-375-071915-
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-
1205 AM CST Sun Dec 7 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM THIS AFTERNOON THROUGH
MONDAY MORNING...

.REST OF TONIGHT...South winds 5 to 10 knots. Seas around 2 feet.
Wave Detail: Southeast 2 feet at 5 seconds. A slight chance of
showers. A slight chance of thunderstorms late. Patchy fog late.
.SUNDAY...West winds around 10 knots, becoming northwest 10 to
15 knots with gusts up to 20 knots in the afternoon. Seas around
2 feet. Wave Detail: West 2 feet at 3 seconds and southeast
2 feet at 5 seconds. A chance of showers with a slight chance of
thunderstorms in the morning. Patchy fog in the morning.
.SUNDAY NIGHT...North winds 20 to 25 knots with gusts up to
30 knots. Seas 3 to 5 feet, building to 6 to 8 feet, occasionally
to 10 feet after midnight. Wave Detail: Northwest 5 feet at
5 seconds and east 1 foot at 5 seconds, becoming northeast 6 feet
at 5 seconds.
.MONDAY...North winds 20 to 25 knots, diminishing to around
20 knots in the afternoon. Seas 5 to 8 feet, occasionally to
10 feet, subsiding to 4 to 6 feet, occasionally to 8 feet in the
afternoon. Wave Detail: North 6 feet at 6 seconds, becoming
northeast 5 feet at 6 seconds.
.MONDAY NIGHT...Northeast winds 10 to 15 knots. Seas 3 to 5 feet.
Wave Detail: Northeast 4 feet at 6 seconds.
.TUESDAY...East winds 5 to 10 knots. Seas 2 to 3 feet. Wave
Detail: Northeast 3 feet at 5 seconds.
.TUESDAY NIGHT...South winds around 10 knots, increasing to 10 to
15 knots after midnight. Seas around 2 feet.
.WEDNESDAY...Southwest winds 10 to 15 knots. Seas 2 to 3 feet.
.WEDNESDAY NIGHT...South winds 15 to 20 knots. Seas 2 to 4 feet.
.THURSDAY...Southwest winds 15 to 20 knots. Seas 3 to 4 feet.
.THURSDAY NIGHT...Southwest winds 15 to 20 knots. Seas 3 to
4 feet.

Winds and seas higher in and near thunderstorms.

$$