Coastal Waters Forecast
Issued by NWS Houston/Galveston, TX
Issued by NWS Houston/Galveston, TX
139 FZUS54 KHGX 291752 CWFHGX Coastal Waters Forecast for Texas National Weather Service Houston/Galveston TX 1152 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. GMZ300-300615- 1152 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 southeast winds and elevated seas continue today. Small Craft Advisories are in effect. A cold front and associated showers and thunderstorms are expected to reach the bays very late tonight, then push over the Gulf waters early Sunday morning. Some of the storms could be on the strong side. Moderate to strong north winds can be expected in the wake of the front. Another upper level disturbance will move through Sunday night and Monday bringing another round of rain and embedded thunderstorms. $$ GMZ330-335-300615- Matagorda Bay-Galveston Bay- 1152 AM CST Sat Nov 29 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM CST THIS EVENING... .THIS AFTERNOON...South winds 15 to 25 knots. Bay waters choppy. A slight chance of showers early, then a chance of showers with a slight chance of thunderstorms late. .TONIGHT...South winds around 15 knots, becoming east 15 to 20 knots after midnight. Bay waters slightly choppy, increasing to choppy after midnight. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. .SUNDAY...North winds 20 to 25 knots with gusts up to 30 knots. Bay waters rough. A chance of thunderstorms in the morning. A chance of showers. .SUNDAY NIGHT...Northeast winds 15 to 20 knots with gusts up to 25 knots. Bay waters choppy. A chance of showers. .MONDAY...Northeast winds 10 to 15 knots with gusts up to 20 knots. Bay waters slightly choppy. Showers with a chance of thunderstorms. .MONDAY NIGHT...North winds around 15 knots, increasing to 15 to 20 knots after midnight. Bay waters slightly choppy, increasing to choppy after midnight. A chance of showers in the evening. .TUESDAY...North winds 15 to 20 knots, diminishing to around 15 knots in the afternoon. Bay waters choppy, diminishing to slightly choppy in the afternoon. .TUESDAY NIGHT...Northeast winds around 10 knots. Bay waters smooth to slightly choppy. .WEDNESDAY...East winds around 10 knots. Bay waters smooth to slightly choppy. .WEDNESDAY NIGHT...East winds 10 to 15 knots. Bay waters slightly choppy. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ350-355-300615- Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM-Coastal waters from High Island to Freeport TX out 20 NM- 1152 AM CST Sat Nov 29 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 6 PM CST THIS EVENING... .THIS AFTERNOON...South winds 15 to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Southeast 5 feet at 7 seconds. A slight chance of showers early. A slight chance of showers late. .TONIGHT...Southeast winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Southeast 4 feet at 7 seconds. A chance of showers with a slight chance of thunderstorms in the evening, then showers with thunderstorms likely after midnight. .SUNDAY...North winds 20 to 25 knots with gusts up to 30 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: East 4 feet at 6 seconds and south 3 feet at 6 seconds. Showers likely with a chance of thunderstorms in the morning, then a chance of showers in the afternoon. .SUNDAY NIGHT...Northeast winds 20 to 25 knots with gusts up to 30 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 5 feet at 6 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 with gusts up to 25 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: East 5 feet at 6 seconds. Showers with a chance of thunderstorms. .MONDAY NIGHT...North winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 4 feet, building to 4 to 6 feet, occasionally to 8 feet after midnight. Wave Detail: East 4 feet at 6 seconds and south 1 foot at 5 seconds, becoming east 3 feet at 5 seconds. Showers likely, mainly in the evening. .TUESDAY...North winds 15 to 20 knots, diminishing to around 15 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. .TUESDAY NIGHT...Northeast winds 10 to 15 knots. Seas 2 to 4 feet. .WEDNESDAY...East winds 10 to 15 knots. Seas 2 to 4 feet. .WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 3 to 4 feet. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ370-375-300615- 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- 1152 AM CST Sat Nov 29 2025 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 PM CST THIS EVENING... .THIS AFTERNOON...South winds 20 to 25 knots. Seas 6 to 8 feet, occasionally to 10 feet. Wave Detail: Southeast 7 feet at 7 seconds. .TONIGHT...South winds 15 to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Southeast 6 feet at 7 seconds. A slight chance of showers and thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight. .SUNDAY...Northeast winds 20 to 25 knots with gusts up to 30 knots. Seas 5 to 6 feet, occasionally to 8 feet, building to 5 to 8 feet, occasionally to 10 feet in the afternoon. Wave Detail: East 3 feet at 5 seconds and south 3 feet at 6 seconds, becoming east 6 feet at 6 seconds and south 3 feet at 6 seconds. Showers with thunderstorms likely in the morning, then a chance of showers in the afternoon. .SUNDAY NIGHT...Northeast winds 20 to 25 knots with gusts up to 30 knots. Seas 6 to 8 feet, occasionally to 10 feet. Wave Detail: Northeast 7 feet at 6 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 with gusts up to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: East 6 feet at 6 seconds. Showers with a chance of thunderstorms. .MONDAY NIGHT...North winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 4 feet at 6 seconds and south 1 foot at 5 seconds. Showers likely, mainly in the evening. .TUESDAY...North winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. .TUESDAY NIGHT...Northeast winds 10 to 15 knots. Seas 3 to 5 feet. .WEDNESDAY...East winds 10 to 15 knots. Seas 3 to 4 feet. A chance of showers and thunderstorms in the afternoon. .WEDNESDAY NIGHT...Southeast winds around 15 knots. Seas 4 to 5 feet. A chance of thunderstorms. Showers likely. Winds and seas higher in and near thunderstorms. $$