Coastal Waters Forecast
Issued by NWS Houston/Galveston, TX
Issued by NWS Houston/Galveston, TX
047 FZUS54 KHGX 281128 CWFHGX Coastal Waters Forecast for Texas National Weather Service Houston/Galveston TX 628 AM CDT Mon Sep 28 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. GMZ300-282345- 628 AM CDT Mon Sep 28 2026 .Synopsis For High Island to the Matagorda Ship Channel Out 60 NM including Galveston and Matagorda Bays. Light onshore winds and low seas will persist today. Tuesday through Thursday, we will see increasing southeast winds and building seas. Small Craft Advisories may be required as early as Tuesday night. We will also see some periods of unsettled weather, especially Thursday into the weekend, in association with deep Gulf moisture in the region in addition to a very slow moving upper level trough in the vicinity. $$ GMZ335-282345- Galveston Bay- 628 AM CDT Mon Sep 28 2026 .TODAY...Southeast winds around 10 knots, increasing to 10 to 15 knots late. Bay waters smooth, increasing to slightly choppy late. A slight chance of showers late this morning. .TONIGHT...Southeast winds 10 to 15 knots. Bay waters slightly choppy. .TUESDAY...Southeast winds 10 to 15 knots. Bay waters slightly choppy. .TUESDAY NIGHT...Southeast winds 15 to 20 knots with gusts up to 25 knots. Bay waters choppy. .WEDNESDAY...Southeast winds 15 to 20 knots with gusts up to 25 knots. Bay waters choppy. A chance of showers. A chance of thunderstorms in the afternoon. .WEDNESDAY NIGHT...Southeast winds 20 to 25 knots. Bay waters rough. A chance of showers after midnight. .THURSDAY...Southeast winds 15 to 20 knots. Bay waters choppy. Showers likely with a chance of thunderstorms. .THURSDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters slightly choppy. Showers likely with a chance of thunderstorms. .FRIDAY...East winds around 10 knots. Bay waters smooth to slightly choppy. A chance of thunderstorms. Showers likely. .FRIDAY NIGHT...Northeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers in the evening, then showers likely after midnight. Winds and waves higher in and near thunderstorms. $$ GMZ330-282345- Matagorda Bay- 628 AM CDT Mon Sep 28 2026 .TODAY...Southeast winds around 10 knots, increasing to 10 to 15 knots this afternoon. Bay waters slightly choppy. A slight chance of thunderstorms late this morning and afternoon. .TONIGHT...Southeast winds 10 to 15 knots. Bay waters slightly choppy. .TUESDAY...Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of showers. A chance of thunderstorms in the afternoon. .TUESDAY NIGHT...Southeast winds 15 to 20 knots with gusts up to 25 knots. Bay waters choppy. A chance of showers. .WEDNESDAY...Southeast winds 15 to 20 knots with gusts up to 25 knots. Bay waters choppy. A chance of showers. A chance of thunderstorms in the afternoon. .WEDNESDAY NIGHT...Southeast winds around 20 knots, increasing to 20 to 25 knots after midnight. Bay waters choppy, increasing to rough after midnight. Showers likely with a chance of thunderstorms after midnight. .THURSDAY...Southeast winds 15 to 20 knots. Bay waters choppy. A chance of thunderstorms. Showers. .THURSDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of thunderstorms. Showers. .FRIDAY...East winds 10 to 15 knots. Bay waters slightly choppy. A chance of thunderstorms. Showers. .FRIDAY NIGHT...Northeast winds 10 to 15 knots. Bay waters slightly choppy. Showers likely. Winds and waves higher in and near thunderstorms. $$ GMZ350-355-282345- Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM-Coastal waters from High Island to Freeport TX out 20 NM- 628 AM CDT Mon Sep 28 2026 .TODAY...Southeast winds around 10 knots, increasing to 10 to 15 knots late. Seas around 2 feet. Wave Detail: Southeast 2 feet at 4 seconds. A slight chance of showers and thunderstorms. .TONIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 4 seconds. .TUESDAY...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 4 seconds. A chance of showers. .TUESDAY NIGHT...Southeast winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 5 feet. Wave Detail: Southeast 5 feet at 5 seconds. A chance of showers after midnight. .WEDNESDAY...Southeast winds 15 to 20 knots with gusts up to 25 knots. Seas 4 to 5 feet. Wave Detail: Southeast 5 feet at 6 seconds. A chance of showers. .WEDNESDAY NIGHT...Southeast winds 20 to 25 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Southeast 7 feet at 6 seconds. A chance of showers after midnight. .THURSDAY...Southeast winds 15 to 20 knots. Seas 5 to 7 feet, occasionally to 9 feet. Showers likely with a chance of thunderstorms. .THURSDAY NIGHT...Southeast winds 10 to 15 knots. Seas 5 to 6 feet, occasionally to 8 feet. A chance of thunderstorms. Showers likely. .FRIDAY...East winds 10 to 15 knots. Seas 4 to 5 feet. A chance of thunderstorms. Showers likely. .FRIDAY NIGHT...Northeast winds 10 to 15 knots. Seas 3 to 5 feet. Showers likely. Winds and seas higher in and near thunderstorms. $$ GMZ370-375-282345- 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- 628 AM CDT Mon Sep 28 2026 .TODAY...Southeast winds around 10 knots, becoming east 10 to 15 knots late. Seas around 2 feet. Wave Detail: Southeast 2 feet at 4 seconds. A slight chance of showers and thunderstorms. .TONIGHT...Southeast winds 10 to 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 4 seconds. .TUESDAY...Southeast winds around 15 knots with gusts up to 20 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 4 seconds. A chance of showers. .TUESDAY NIGHT...Southeast winds 15 to 20 knots with gusts up to 25 knots. Seas 3 to 5 feet. Wave Detail: Southeast 5 feet at 5 seconds. .WEDNESDAY...Southeast winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 6 feet, occasionally to 8 feet. Wave Detail: Southeast 5 feet at 6 seconds. .WEDNESDAY NIGHT...Southeast winds around 20 knots, increasing to 20 to 25 knots after midnight. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Southeast 7 feet at 6 seconds. A chance of showers after midnight. .THURSDAY...Southeast winds 15 to 20 knots. Seas 6 to 8 feet, occasionally to 10 feet. A chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. .THURSDAY NIGHT...Southeast winds 15 to 20 knots. Seas around 6 feet, occasionally to 8 feet. A chance of thunderstorms. A chance of showers. .FRIDAY...East winds 10 to 15 knots. Seas 5 to 6 feet, occasionally to 8 feet. A chance of thunderstorms. Showers likely. .FRIDAY NIGHT...Northeast winds 10 to 15 knots. Seas around 5 feet. Showers likely. Winds and seas higher in and near thunderstorms. $$