Coastal Waters Forecast
Issued by NWS Houston/Galveston, TX
Issued by NWS Houston/Galveston, TX
305 FZUS54 KHGX 290602 CWFHGX Coastal Waters Forecast for Texas National Weather Service Houston/Galveston TX 1202 AM CST Sat Nov 29 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. GMZ300-291915- 1202 AM CST Sat Nov 29 2025 .Synopsis For High Island to the Matagorda Ship Channel Out 60 NM including Galveston and Matagorda Bays. Moderate to strong southeasterly winds and building seas continue. Buoy 19 is reporting wave heights of 9 feet at this time and sites in the bays are reporting winds of 20-25 kts with gusts to 30 kts. Small Craft Advisories are in effect for all waters. Shower and thunderstorm chances increase ahead of a strong cold front that should be pushing off the coast after midnight, around 2am, and across the Gulf waters through the late night and early Sunday morning hours. A few storms may be on the stronger side. Moderate to strong offshore flow and elevated seas will persist in the wake of the front. An upper level disturbance is forecast to push overhead Sunday night and Monday bringing another chance of showers and isolated thunderstorms to the waters. $$ GMZ330-335-291915- Matagorda Bay-Galveston Bay- 1202 AM CST Sat Nov 29 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON... .REST OF TONIGHT...Southeast winds 20 to 25 knots with gusts to 30 knots. Bay waters rough. A slight chance of showers late. .SATURDAY...South winds 15 to 20 knots with gusts up to 25 knots. Bay waters choppy. A chance of showers. .SATURDAY NIGHT...South winds around 15 knots, becoming east 15 to 20 knots after midnight. Bay waters slightly choppy, increasing to choppy after midnight. A chance of showers in the evening, then showers with a chance of thunderstorms after midnight. .SUNDAY...North winds 15 to 20 knots with gusts up to 25 knots. Bay waters choppy. Showers likely with a chance of thunderstorms in the morning, then a chance of showers in the afternoon. .SUNDAY NIGHT...Northeast winds 15 to 20 knots with gusts up to 25 knots. Bay waters choppy. A chance of showers. .MONDAY...Northeast winds 15 to 20 knots, diminishing to around 15 knots in the afternoon. Bay waters choppy, diminishing to slightly choppy in the afternoon. Showers. .MONDAY NIGHT...North winds around 15 knots, increasing to 15 to 20 knots after midnight. Bay waters slightly choppy, increasing to choppy after midnight. Showers likely, mainly in the evening. .TUESDAY...North winds 15 to 20 knots, diminishing to around 15 knots in the afternoon. Bay waters choppy, diminishing to slightly choppy in the afternoon. .TUESDAY NIGHT...Northeast winds 5 to 10 knots. Bay waters smooth. .WEDNESDAY...East winds around 10 knots. Bay waters smooth to slightly choppy. .WEDNESDAY NIGHT...East winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers. Winds and waves higher in and near thunderstorms. $$ GMZ350-355-291915- Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM-Coastal waters from High Island to Freeport TX out 20 NM- 1202 AM CST Sat Nov 29 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON... .REST OF TONIGHT...Southeast winds 20 to 25 knots with gusts up to 30 knots. Seas 5 to 6 feet, occasionally to 9 feet. Wave Detail: Southeast 6 feet at 6 seconds. .SATURDAY...South winds 20 to 25 knots, diminishing to around 20 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Southeast 6 feet at 7 seconds. A slight chance of showers. .SATURDAY NIGHT...Southeast winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: South 4 feet at 7 seconds. A chance of thunderstorms. A chance of showers in the evening, then showers after midnight. .SUNDAY...North winds 20 to 25 knots. Seas 4 to 5 feet. Wave Detail: Southeast 4 feet at 6 seconds. Showers with a chance of thunderstorms in the morning, then a chance of showers in the afternoon. .SUNDAY NIGHT...Northeast winds 20 to 25 knots. Seas 4 to 5 feet. Wave Detail: Northeast 5 feet at 5 seconds and south 1 foot at 6 seconds. A chance of showers in the evening, then showers likely after midnight. .MONDAY...Northeast winds 15 to 20 knots. Seas 3 to 5 feet. Wave Detail: East 5 feet at 6 seconds. Showers. A chance of thunderstorms in the afternoon. .MONDAY NIGHT...North winds 15 to 20 knots. Seas 3 to 4 feet. Showers likely, mainly in the evening. .TUESDAY...North winds 15 to 20 knots, diminishing to around 15 knots in the afternoon. Seas 2 to 4 feet. .TUESDAY NIGHT...Northeast winds 10 to 15 knots. Seas 2 to 3 feet. .WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. .WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers in the evening, then showers likely after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ370-375-291915- Waters from Freeport to Matagorda Ship Channel TX from 20 to 60 NM-Waters from High Island to Freeport TX from 20 to 60 NM- 1202 AM CST Sat Nov 29 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON... .REST OF TONIGHT...Southeast winds 20 to 25 knots. Seas 6 to 7 feet, occasionally to 9 feet. Wave Detail: Southeast 7 feet at 7 seconds. .SATURDAY...South winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Southeast 6 feet at 6 seconds. A slight chance of showers in the afternoon. .SATURDAY NIGHT...South winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Southeast 4 feet at 7 seconds. A chance of showers in the evening, then showers with a chance of thunderstorms after midnight. .SUNDAY...Northeast winds around 20 knots, increasing to 20 to 25 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 5 feet at 5 seconds and south 3 feet at 6 seconds. Showers with a chance of thunderstorms in the morning, then showers likely in the afternoon. .SUNDAY NIGHT...Northeast winds 20 to 25 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 6 feet at 6 seconds and south 1 foot at 6 seconds. Showers likely. .MONDAY...Northeast winds 15 to 20 knots. Seas 4 to 5 feet. Wave Detail: East 5 feet at 6 seconds and south 1 foot at 5 seconds. Showers. A chance of thunderstorms in the afternoon. .MONDAY NIGHT...North winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 5 feet. Showers likely, mainly in the evening. .TUESDAY...North winds 15 to 20 knots. Seas 3 to 5 feet. .TUESDAY NIGHT...Northeast winds 10 to 15 knots. Seas 2 to 4 feet. .WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. .WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. A chance of showers in the evening, then showers likely after midnight. Winds and seas higher in and near thunderstorms. $$