FZUS54 KHGX 090510 CWFHGX Coastal Waters Forecast for Texas National Weather Service Houston/Galveston TX 1210 AM CDT Thu Jul 9 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. GMZ300-091815- 1210 AM CDT Thu Jul 9 2026 .Synopsis For High Island to the Matagorda Ship Channel Out 60 NM including Galveston and Matagorda Bays. With a fairly long fetch of onshore winds in the 12-17kt range setting up in the coming days and through the weekend, we should see the current 2 foot seas bump up a bit...closer to 3-4ft. Rain chances increase Friday into early next week as deeper tropical moisture moves into the area. Mariners should anticipate scattered, to occasionally numerous, showers/tstms during the late night through early afternoon hours on a daily basis. Winds and seas will be higher in and near any stronger storms. $$ GMZ335-091815- Galveston Bay- 1210 AM CDT Thu Jul 9 2026 .REST OF TONIGHT...Southwest winds 10 to 15 knots. Bay waters slightly choppy. .THURSDAY...Southwest winds around 10 knots, becoming south 10 to 15 knots with gusts up to 20 knots in the afternoon. Bay waters smooth, increasing to slightly choppy in the afternoon. A slight chance of showers and thunderstorms in the afternoon. .THURSDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly choppy. .FRIDAY...South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and thunderstorms. .FRIDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and thunderstorms after midnight. .SATURDAY...South winds 10 to 15 knots. Bay waters slightly choppy. Showers and thunderstorms likely, mainly in the morning. .SATURDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly choppy. .SUNDAY...South winds 5 to 10 knots. Bay waters smooth. A chance of showers and thunderstorms. .SUNDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth. A chance of showers and thunderstorms after midnight. .MONDAY...South winds 5 to 10 knots. Bay waters smooth. Thunderstorms likely. Showers likely. .MONDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth. A chance of showers and thunderstorms after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ330-091815- Matagorda Bay- 1210 AM CDT Thu Jul 9 2026 .REST OF TONIGHT...South winds 10 to 15 knots. Bay waters slightly choppy. .THURSDAY...South winds around 10 knots, increasing to 10 to 15 knots with gusts up to 20 knots in the afternoon. Bay waters smooth, increasing to slightly choppy in the afternoon. A slight chance of showers and thunderstorms in the afternoon. .THURSDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and thunderstorms after midnight. .FRIDAY...Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and thunderstorms. .FRIDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and thunderstorms. .SATURDAY...Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers and thunderstorms. .SATURDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters slightly choppy. .SUNDAY...Southeast winds 5 to 10 knots. Bay waters smooth. .SUNDAY NIGHT...Southeast winds 10 to 15 knots, becoming south around 10 knots after midnight. Bay waters slightly choppy, diminishing to smooth after midnight. .MONDAY...South winds 5 to 10 knots. Bay waters smooth. A chance of showers and thunderstorms. .MONDAY NIGHT...Southeast winds 5 to 10 knots. Bay waters smooth. A chance of showers after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ350-355-091815- Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM-Coastal waters from High Island to Freeport TX out 20 NM- 1210 AM CDT Thu Jul 9 2026 .REST OF TONIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 6 seconds. .THURSDAY...Southwest winds around 10 knots, becoming south 10 to 15 knots in the afternoon. Seas 2 to 3 feet. Wave Detail: South 2 feet at 6 seconds. A slight chance of showers and thunderstorms in the afternoon. .THURSDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 5 seconds. .FRIDAY...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 5 seconds. A chance of showers and thunderstorms. .FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas around 3 feet. Wave Detail: Southeast 3 feet at 6 seconds. A chance of showers and thunderstorms after midnight. .SATURDAY...South winds around 10 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 6 seconds. A chance of showers and thunderstorms. .SATURDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers and thunderstorms after midnight. .SUNDAY...South winds 5 to 10 knots. Seas 2 to 3 feet. A chance of showers and thunderstorms in the morning. .SUNDAY NIGHT...South winds 10 to 15 knots. Seas around 3 feet. .MONDAY...South winds 5 to 10 knots. Seas 2 to 4 feet. A chance of thunderstorms. Showers likely, mainly in the morning. .MONDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 4 feet. A chance of showers and thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$ GMZ370-375-091815- 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- 1210 AM CDT Thu Jul 9 2026 .REST OF TONIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 6 seconds. A slight chance of showers and thunderstorms. .THURSDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 6 seconds. A slight chance of showers and thunderstorms. .THURSDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 5 seconds. .FRIDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 5 seconds. A chance of showers and thunderstorms. .FRIDAY NIGHT...Southeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds. .SATURDAY...Southeast winds around 10 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 6 seconds. A chance of showers and thunderstorms in the morning. .SATURDAY NIGHT...Southeast winds 10 to 15 knots. Seas around 3 feet. .SUNDAY...South winds 5 to 10 knots. Seas around 3 feet. A chance of showers and thunderstorms in the morning. .SUNDAY NIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet. .MONDAY...South winds 5 to 10 knots. Seas 3 to 4 feet. Showers likely with a chance of thunderstorms in the morning, then a chance of showers in the afternoon. .MONDAY NIGHT...South winds 5 to 10 knots. Seas 3 to 4 feet. A chance of showers and thunderstorms after midnight. Winds and seas higher in and near thunderstorms. $$