FZUS54 KHGX 181629 CWFHGX Coastal Waters Forecast for Texas National Weather Service Houston/Galveston TX 1129 AM CDT Sat Jul 18 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. GMZ300-190515- 1129 AM CDT Sat Jul 18 2026 .Synopsis For High Island to the Matagorda Ship Channel Out 60 NM including Galveston and Matagorda Bays. Favorable marine conditions are anticipated into midweek. Southerly winds 10 to 15 knots and 2-3 foot seas will prevail today. As surface high pressure moves into the northwest Gulf Sunday and early next week we should see slightly lighter south-southwest winds and seas further subsiding. $$ GMZ335-190515- Galveston Bay- 1129 AM CDT Sat Jul 18 2026 .THIS AFTERNOON...South winds 5 to 10 knots. Bay waters smooth. .TONIGHT...South winds 10 to 15 knots, becoming southwest around 10 knots after midnight. Bay waters slightly choppy, diminishing to smooth after midnight. .SUNDAY...Southwest winds 5 to 10 knots, becoming south in the afternoon. Bay waters smooth. .SUNDAY NIGHT...Southwest winds 10 to 15 knots. Bay waters slightly choppy. .MONDAY...West winds 5 to 10 knots, becoming southwest in the afternoon. Bay waters smooth. .MONDAY NIGHT...Southwest winds 10 to 15 knots. Bay waters slightly choppy. .TUESDAY...West winds 5 to 10 knots, becoming southwest in the afternoon. Bay waters smooth. .TUESDAY NIGHT...Southwest winds 10 to 15 knots. Bay waters slightly choppy. .WEDNESDAY...West winds 5 to 10 knots, becoming southwest in the afternoon. Bay waters smooth. .WEDNESDAY NIGHT...Southwest winds 10 to 15 knots. Bay waters slightly choppy. $$ GMZ330-190515- Matagorda Bay- 1129 AM CDT Sat Jul 18 2026 .THIS AFTERNOON...South winds 10 to 15 knots. Bay waters slightly choppy. .TONIGHT...South winds 10 to 15 knots. Bay waters slightly choppy. .SUNDAY...South winds around 10 knots. Bay waters smooth to slightly choppy. .SUNDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly choppy. .MONDAY...South winds 5 to 10 knots. Bay waters smooth. .MONDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth. .TUESDAY...South winds 5 to 10 knots. Bay waters smooth. .TUESDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth. .WEDNESDAY...South winds 5 to 10 knots. Bay waters smooth. .WEDNESDAY NIGHT...South winds 5 to 10 knots. Bay waters smooth. $$ GMZ350-355-190515- Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM-Coastal waters from High Island to Freeport TX out 20 NM- 1129 AM CDT Sat Jul 18 2026 .THIS AFTERNOON...South winds around 10 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 6 seconds. .TONIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: South 3 feet at 6 seconds. .SUNDAY...Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 6 seconds. .SUNDAY NIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet. Wave Detail: South 2 feet at 6 seconds. .MONDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 5 seconds. .MONDAY NIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet. Wave Detail: South 2 feet at 4 seconds. .TUESDAY...Southwest winds 10 to 15 knots, diminishing to around 10 knots in the afternoon. Seas around 2 feet. .TUESDAY NIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet. .WEDNESDAY...Southwest winds 10 to 15 knots, diminishing to around 10 knots in the afternoon. Seas around 2 feet. .WEDNESDAY NIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet. $$ GMZ370-375-190515- 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- 1129 AM CDT Sat Jul 18 2026 .THIS AFTERNOON...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 6 seconds. .TONIGHT...South winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 6 seconds. .SUNDAY...Southwest winds 5 to 10 knots. Seas 2 to 3 feet. Wave Detail: South 2 feet at 6 seconds. .SUNDAY NIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 6 seconds. .MONDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 4 seconds and southeast 1 foot at 9 seconds. .MONDAY NIGHT...South winds around 10 knots, becoming southwest 10 to 15 knots after midnight. Seas around 2 feet. Wave Detail: Southwest 2 feet at 4 seconds and southeast 1 foot at 9 seconds. .TUESDAY...Southwest winds 10 to 15 knots, diminishing to around 10 knots in the afternoon. Seas around 2 feet. .TUESDAY NIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet. .WEDNESDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. .WEDNESDAY NIGHT...South winds around 10 knots, becoming southwest 10 to 15 knots after midnight. Seas around 2 feet. $$