FZUS54 KHGX 220431 CWFHGX Coastal Waters Forecast for Texas National Weather Service Houston/Galveston TX 1131 PM CDT Fri Aug 21 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. GMZ300-221730- 1131 PM CDT Fri Aug 21 2026 .Synopsis For High Island to the Matagorda Ship Channel Out 60 NM including Galveston and Matagorda Bays. South to southwest winds are expected to average 10 to 15 knots over the next several days. Gusts to 20 knots possible in the afternoon in the bays and during the overnight in the Gulf. Seas of 2 to 3 feet expected. Cannot rule out an isolated thunderstorm Saturday evening, with the best chance of storm being in inland areas. $$ GMZ335-221730- Galveston Bay- 1131 PM CDT Fri Aug 21 2026 .OVERNIGHT...Southwest winds 10 to 15 knots, diminishing to around 10 knots late. Bay waters slightly choppy, diminishing to smooth late. .SATURDAY...West winds 5 to 10 knots, becoming south in the afternoon. Bay waters smooth. .SATURDAY NIGHT...Southwest winds 10 to 15 knots with gusts up to 20 knots, diminishing to around 10 knots after midnight. Bay waters slightly choppy, diminishing to smooth after midnight. .SUNDAY...West winds around 10 knots, becoming south 10 to 15 knots in the afternoon. Bay waters smooth, increasing to slightly choppy in the afternoon. .SUNDAY NIGHT...Southwest winds 10 to 15 knots. Bay waters slightly choppy. .MONDAY...Southwest winds around 10 knots, becoming south 10 to 15 knots in the afternoon. Bay waters smooth, increasing to slightly choppy in the afternoon. .MONDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly choppy. .TUESDAY...Southwest winds around 10 knots, becoming south 10 to 15 knots in the afternoon. Bay waters smooth, increasing to slightly choppy in the afternoon. .TUESDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly choppy. .WEDNESDAY...Southwest winds 10 to 15 knots. Bay waters slightly choppy. .WEDNESDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly choppy. $$ GMZ330-221730- Matagorda Bay- 1131 PM CDT Fri Aug 21 2026 .OVERNIGHT...South winds around 10 knots. Bay waters smooth to slightly choppy. .SATURDAY...Southwest winds 5 to 10 knots. Bay waters smooth. .SATURDAY NIGHT...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...South winds 10 to 15 knots. Bay waters slightly choppy. .MONDAY...South winds 5 to 10 knots. Bay waters smooth. .MONDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly choppy. .TUESDAY...South winds around 10 knots, increasing to 10 to 15 knots in the afternoon. Bay waters smooth, increasing to slightly choppy in the afternoon. .TUESDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly choppy. .WEDNESDAY...South winds 10 to 15 knots. Bay waters slightly choppy. .WEDNESDAY NIGHT...South winds 10 to 15 knots. Bay waters slightly choppy. $$ GMZ350-355-221730- Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM-Coastal waters from High Island to Freeport TX out 20 NM- 1131 PM CDT Fri Aug 21 2026 .OVERNIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet. Wave Detail: South 2 feet at 5 seconds. .SATURDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 4 seconds. .SATURDAY NIGHT...Southwest winds 10 to 15 knots. Seas around 2 feet. Wave Detail: South 2 feet at 4 seconds. .SUNDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 4 seconds. .SUNDAY NIGHT...South winds around 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 4 seconds. .MONDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 4 seconds. .MONDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. .TUESDAY...Southwest winds 10 to 15 knots, becoming south around 10 knots in the afternoon. Seas 2 to 3 feet. .TUESDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. .WEDNESDAY...Southwest winds 10 to 15 knots, becoming south around 10 knots in the afternoon. Seas 2 to 3 feet. .WEDNESDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. $$ GMZ370-375-221730- 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- 1131 PM CDT Fri Aug 21 2026 .OVERNIGHT...Southwest winds around 10 knots. Seas around 2 feet. Wave Detail: South 2 feet at 5 seconds. .SATURDAY...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 4 seconds. .SATURDAY NIGHT...Southwest winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southwest 2 feet at 4 seconds. .SUNDAY...Southwest winds 5 to 10 knots. Seas around 2 feet in the morning, then 1 foot or less. Wave Detail: Southwest 2 feet at 4 seconds, becoming southwest 1 foot at 4 seconds. .SUNDAY NIGHT...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southwest 1 foot at 4 seconds. .MONDAY...South winds 5 to 10 knots. Seas around 2 feet. Wave Detail: Southwest 1 foot at 4 seconds. .MONDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. .TUESDAY...South winds 5 to 10 knots. Seas 2 to 3 feet. .TUESDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. .WEDNESDAY...Southwest winds 10 to 15 knots, becoming south around 10 knots in the afternoon. Seas 2 to 3 feet. .WEDNESDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. $$