Coastal Waters Forecast
Issued by NWS Houston/Galveston, TX
Issued by NWS Houston/Galveston, TX
002 FZUS54 KHGX 081743 CWFHGX Coastal Waters Forecast for Texas National Weather Service Houston/Galveston TX 1243 PM CDT Tue Sep 8 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. GMZ300-090615- 1243 PM CDT Tue Sep 8 2026 .Synopsis For High Island to the Matagorda Ship Channel Out 60 NM including Galveston and Matagorda Bays. Light winds and low seas will prevail for the next several days. Daily isolated to scattered showers and storms are expected. Stronger storms could produce wind gusts to 30 knots, frequent lightning, and heavy downpours. The best chances will be in the morning through early afternoon hours. Onshore winds become moderate towards the end of the week. $$ GMZ335-090615- Galveston Bay- 1243 PM CDT Tue Sep 8 2026 .THIS AFTERNOON...East winds around 5 knots, becoming southeast late. Bay waters smooth. A chance of showers and thunderstorms early, then a slight chance of showers and thunderstorms late. .TONIGHT...Southeast winds 5 to 10 knots. Bay waters smooth. A slight chance of showers with isolated thunderstorms after midnight. .WEDNESDAY...East winds 5 to 10 knots. Bay waters smooth. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...East winds 5 to 10 knots. Bay waters smooth. A chance of showers and thunderstorms after midnight. .THURSDAY...Northeast winds around 5 knots, becoming southeast in the afternoon. Bay waters smooth. A chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. .THURSDAY NIGHT...Southeast winds 5 to 10 knots, becoming southwest after midnight. Bay waters smooth. A chance of showers and thunderstorms after midnight. .FRIDAY...Southwest winds 5 to 10 knots. Bay waters smooth. Showers and thunderstorms likely. .FRIDAY NIGHT...South winds around 10 knots. Bay waters smooth to slightly choppy. A chance of showers and thunderstorms after midnight. .SATURDAY...South winds 5 to 10 knots. Bay waters smooth. A chance of thunderstorms. A chance of showers. .SATURDAY NIGHT...South winds around 10 knots. Bay waters smooth to slightly choppy. A chance of showers and thunderstorms after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ330-090615- Matagorda Bay- 1243 PM CDT Tue Sep 8 2026 .THIS AFTERNOON...Southeast winds around 10 knots, increasing to 10 to 15 knots late. Bay waters smooth, increasing to slightly choppy late. A slight chance of showers and thunderstorms early. .TONIGHT...Southeast winds 10 to 15 knots, diminishing to around 10 knots after midnight. Bay waters slightly choppy, diminishing to smooth after midnight. A slight chance of showers with isolated thunderstorms after midnight. .WEDNESDAY...East winds 5 to 10 knots. Bay waters smooth. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth. A chance of showers and thunderstorms after midnight. .THURSDAY...East winds around 5 knots, becoming southeast in the afternoon. Bay waters smooth. A chance of showers and thunderstorms. .THURSDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth. A chance of showers and thunderstorms after midnight. .FRIDAY...South winds 5 to 10 knots. Bay waters smooth. A chance of showers and thunderstorms in the morning. .FRIDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly choppy. .SATURDAY...South winds 10 to 15 knots. Bay waters slightly choppy. .SATURDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly choppy. Winds and waves higher in and near thunderstorms. $$ GMZ350-355-090615- Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM-Coastal waters from High Island to Freeport TX out 20 NM- 1243 PM CDT Tue Sep 8 2026 .THIS AFTERNOON...Southeast winds around 5 knots, increasing to 5 to 10 knots late. Seas 1 foot or less. Wave Detail: South 1 foot at 4 seconds. A slight chance of showers and thunderstorms early. .TONIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 1 foot at 3 seconds. A slight chance of showers with isolated thunderstorms after midnight. .WEDNESDAY...East winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 4 seconds. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 4 seconds. A chance of showers and thunderstorms after midnight. .THURSDAY...North winds around 5 knots, becoming southeast in the afternoon. Seas 1 foot or less. Wave Detail: South 1 foot at 5 seconds. Showers and thunderstorms likely, mainly in the morning. .THURSDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Seas around 2 feet. Wave Detail: South 2 feet at 5 seconds and south 1 foot at 2 seconds. A chance of showers and thunderstorms after midnight. .FRIDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. Showers and thunderstorms likely, mainly in the morning. .FRIDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and thunderstorms after midnight. .SATURDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. A chance of thunderstorms. A chance of showers. .SATURDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. Winds and seas higher in and near thunderstorms. $$ GMZ370-375-090615- 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- 1243 PM CDT Tue Sep 8 2026 .THIS AFTERNOON...East winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 4 seconds. A slight chance of showers and thunderstorms early. .TONIGHT...Southeast winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southeast 1 foot at 3 seconds. A slight chance of showers with isolated thunderstorms after midnight. .WEDNESDAY...East winds 5 to 10 knots. Seas 1 foot or less. Wave Detail: South 1 foot at 4 seconds. A chance of showers and thunderstorms. .WEDNESDAY NIGHT...East winds 5 to 10 knots, becoming southeast after midnight. Seas 1 foot or less. Wave Detail: South 1 foot at 4 seconds. A chance of showers and thunderstorms after midnight. .THURSDAY...West winds around 5 knots, becoming east around 5 knots in the afternoon. Seas 1 foot or less. Wave Detail: South 1 foot at 5 seconds. Showers and thunderstorms likely in the morning. .THURSDAY NIGHT...Southeast winds 5 to 10 knots, becoming south after midnight. Seas around 2 feet. Wave Detail: South 2 feet at 5 seconds and south 1 foot at 2 seconds. A chance of showers and thunderstorms after midnight. .FRIDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. Showers and thunderstorms likely, mainly in the morning. .FRIDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and thunderstorms after midnight. .SATURDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and thunderstorms in the morning. .SATURDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. Winds and seas higher in and near thunderstorms. $$