National Weather Service Marine Forecast FZUS54 KHGX

FZUS54 KHGX 121136
CWFHGX

Coastal Waters Forecast for Texas
National Weather Service Houston/Galveston TX
536 AM CST Mon Jan 12 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.

GMZ300-130015
536 AM CST Mon Jan 12 2026

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

Offshore winds will continue through most of the week, and mariners should anticipate negative tide levels through the week, especially in the central and northern half of the the bays. Otherwise, look for light winds and falling seas early in the week. The next front is expected to push into the waters Wednesday afternoon with increasing northwest and north winds filling in behind it Wednesday night along with building seas.

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GMZ335-130015
Galveston Bay
536 AM CST Mon Jan 12 2026

LOW WATER ADVISORY IN EFFECT UNTIL NOON CST TUESDAY

TODAY
Northeast winds 5 to 10 knots. Bay waters smooth.

TONIGHT
Northeast winds around 5 knots. Bay waters smooth.

TUESDAY
North winds around 5 knots, becoming northwest around 5 knots in the afternoon. Bay waters smooth.

TUESDAY NIGHT
Southwest winds 5 to 10 knots. Bay waters smooth.

WEDNESDAY
West winds around 10 knots, becoming northwest 15 to 20 knots in the afternoon. Bay waters smooth to slightly choppy, increasing to choppy in the afternoon.

WEDNESDAY NIGHT
North winds 15 to 20 knots with gusts up to 25 knots. Bay waters choppy.

THURSDAY
North winds 15 to 20 knots, diminishing to around 15 knots in the afternoon. Bay waters choppy, diminishing to slightly choppy in the afternoon.

THURSDAY NIGHT
Southeast winds 5 to 10 knots. Bay waters smooth.

FRIDAY
South winds 5 to 10 knots. Bay waters smooth.

FRIDAY NIGHT
Northeast winds around 10 knots, becoming north 10 to 15 knots after midnight. Bay waters smooth, increasing to slightly choppy after midnight.

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GMZ330-130015
Matagorda Bay
536 AM CST Mon Jan 12 2026

TODAY
Northeast winds 5 to 10 knots. Bay waters smooth.

TONIGHT
Northeast winds 5 to 10 knots. Bay waters smooth. A slight chance of showers after midnight.

TUESDAY
North winds 5 to 10 knots. Bay waters smooth.

TUESDAY NIGHT
West winds 5 to 10 knots. Bay waters smooth.

WEDNESDAY
West winds around 15 knots, becoming northwest 15 to 20 knots in the afternoon. Bay waters slightly choppy, increasing to choppy in the afternoon.

WEDNESDAY NIGHT
North winds 15 to 20 knots. Bay waters choppy.

THURSDAY
North winds 15 to 20 knots, diminishing to around 15 knots in the afternoon. Bay waters choppy, diminishing to slightly choppy in the afternoon.

THURSDAY NIGHT
Southeast winds 5 to 10 knots. Bay waters smooth.

FRIDAY
South winds 5 to 10 knots. Bay waters smooth.

FRIDAY NIGHT
East winds around 10 knots, becoming northeast 15 to 20 knots after midnight. Bay waters smooth, increasing to choppy after midnight.

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GMZ350-355-130015
Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM-Coastal waters from High Island to Freeport TX out 20 NM
536 AM CST Mon Jan 12 2026

TODAY
Northeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 6 seconds.

TONIGHT
Northeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 5 seconds.

TUESDAY
North winds around 5 knots. Seas around 2 feet. Wave Detail: East 2 feet at 5 seconds.

TUESDAY NIGHT
West winds around 10 knots, increasing to 10 to 15 knots after midnight. Seas around 2 feet. Wave Detail: East 2 feet at 6 seconds and west 1 foot at 3 seconds.

WEDNESDAY
West winds around 15 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 6 seconds.

WEDNESDAY NIGHT
North winds 20 to 25 knots with gusts up to 30 knots. Seas 3 to 5 feet. Wave Detail: North 3 feet at 5 seconds.

THURSDAY
North winds 20 to 25 knots, diminishing to around 15 knots in the afternoon. Seas 3 to 5 feet, subsiding to 2 to 3 feet in the afternoon.

THURSDAY NIGHT
Southeast winds 5 to 10 knots, becoming south after midnight. Seas around 2 feet in the evening, then 1 foot or less.

FRIDAY
South winds 5 to 10 knots. Seas around 2 feet.

FRIDAY NIGHT
Northeast winds around 10 knots, becoming north 15 to 20 knots after midnight. Seas around 2 feet.

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GMZ370-375-130015
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
536 AM CST Mon Jan 12 2026

TODAY
Northeast winds 10 to 15 knots. Seas 2 to 4 feet. Wave Detail: Northeast 3 feet at 6 seconds.

TONIGHT
Northeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: Northeast 3 feet at 6 seconds. A slight chance of showers after midnight.

TUESDAY
Northeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: East 2 feet at 6 seconds.

TUESDAY NIGHT
Northwest winds around 10 knots, becoming west 10 to 15 knots with gusts up to 20 knots after midnight. Seas around 2 feet. Wave Detail: West 2 feet at 3 seconds and east 2 feet at 6 seconds.

WEDNESDAY
West winds around 15 knots, becoming northwest around 20 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: West 3 feet at 4 seconds and east 2 feet at 6 seconds.

WEDNESDAY NIGHT
North winds around 30 knots. Seas 3 to 5 feet, building to 5 to 7 feet, occasionally to 9 feet after midnight. Wave Detail: Northwest 5 feet at 5 seconds and east 1 foot at 6 seconds, becoming north 5 feet at 5 seconds and east 1 foot at 6 seconds.

THURSDAY
North winds 20 to 25 knots, diminishing to around 20 knots in the afternoon. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to 3 to 5 feet in the afternoon.

THURSDAY NIGHT
East winds 5 to 10 knots, becoming south after midnight. Seas 2 to 3 feet.

FRIDAY
South winds 5 to 10 knots. Seas around 2 feet.

FRIDAY NIGHT
Southeast winds around 10 knots, becoming north 15 to 20 knots after midnight. Seas 2 to 3 feet.