Coastal Waters Forecast
Issued by NWS Houston/Galveston, TX
Issued by NWS Houston/Galveston, TX
273 FZUS54 KHGX 010955 CWFHGX Coastal Waters Forecast for Texas National Weather Service Houston/Galveston TX 355 AM CST Mon Dec 1 2025 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. GMZ300-012230- 355 AM CST Mon Dec 1 2025 .Synopsis For High Island to the Matagorda Ship Channel Out 60 NM including Galveston and Matagorda Bays. The combination of a developing coastal low offshore and an approaching upper level disturbance will produce widespread rain and isolated thunderstorms over the waters today. Some of the rain could be heavy at times and reduce visibilities. Moderate northeast winds today will back to the north and increase to 20 to 25 knots with gusts to 30 knots as the coastal low moves off to the east. Small Craft Advisories will likely continue into Tuesday morning before winds and seas begin to subside. Southeast winds will resume Tuesday night. Though there is some some uncertainty, let`s be on the lookout for the possibility of some sea fog development Wednesday night ahead of the next frontal passage on Thursday. $$ GMZ335-012230- Galveston Bay- 355 AM CST Mon Dec 1 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH LATE TONIGHT... .TODAY...Northeast winds 15 knots with gusts up to 20 knots. Bay waters slightly choppy. Showers with a chance of thunderstorms. Heavy rainfall is possible at times. .TONIGHT...North winds around 20 knots, increasing to 20 to 25 knots after midnight. Bay waters choppy, increasing to rough after midnight. A chance of showers, mainly in the evening. .TUESDAY...North winds 15 to 20 knots with gusts up to 25 knots, diminishing to around 15 knots in the afternoon. Bay waters choppy, diminishing to slightly choppy in the afternoon. .TUESDAY NIGHT...East winds 5 to 10 knots. Bay waters smooth. .WEDNESDAY...Southeast winds 5 to 10 knots. Bay waters smooth. .WEDNESDAY NIGHT...Southeast winds around 10 knots. Bay waters smooth to slightly choppy. A chance of thunderstorms. Showers. .THURSDAY...Northeast winds 10 to 15 knots. Bay waters slightly choppy. Showers with a chance of thunderstorms. .THURSDAY NIGHT...North winds 10 to 15 knots. Bay waters slightly choppy. Showers with a chance of thunderstorms in the evening, then showers likely after midnight. .FRIDAY...North winds 10 to 15 knots, diminishing to around 10 knots in the afternoon. Bay waters slightly choppy, diminishing to smooth in the afternoon. Showers likely, mainly in the morning. .FRIDAY NIGHT...North winds 5 to 10 knots. Bay waters smooth. A chance of showers in the evening. Winds and waves higher in and near thunderstorms. $$ GMZ330-012230- Matagorda Bay- 355 AM CST Mon Dec 1 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH LATE TONIGHT... .TODAY...North winds 15 knots. Bay waters slightly choppy to choppy. Showers with a chance of thunderstorms. Heavy rain is possible at times. .TONIGHT...North winds around 20 knots, increasing to 20 to 25 knots after midnight. Bay waters choppy, increasing to rough after midnight. A chance of showers in the evening. .TUESDAY...North winds 15 to 20 knots with gusts up to 25 knots, diminishing to around 15 knots in the afternoon. Bay waters choppy, diminishing to slightly choppy in the afternoon. .TUESDAY NIGHT...Northeast winds 5 to 10 knots, becoming southeast after midnight. Bay waters smooth. .WEDNESDAY...Southeast winds 5 to 10 knots. Bay waters smooth. A chance of showers in the afternoon. .WEDNESDAY NIGHT...Southeast winds around 10 knots. Bay waters smooth to slightly choppy. Showers with a chance of thunderstorms. .THURSDAY...North winds 10 to 15 knots. Bay waters slightly choppy. A chance of thunderstorms. Showers. .THURSDAY NIGHT...North winds 10 to 15 knots. Bay waters slightly choppy. A chance of thunderstorms in the evening. Showers likely. .FRIDAY...North winds 10 to 15 knots. Bay waters slightly choppy. Showers likely, mainly in the morning. .FRIDAY NIGHT...North winds around 10 knots. Bay waters smooth to slightly choppy. A chance of showers. Winds and waves higher in and near thunderstorms. $$ GMZ350-355-012230- Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM-Coastal waters from High Island to Freeport TX out 20 NM- 355 AM CST Mon Dec 1 2025 ...SMALL CRAFT SHOULD EXERCISE CAUTION IN EFFECT THROUGH THIS AFTERNOON... ...SMALL CRAFT ADVISORY IN EFFECT FROM THIS EVENING THROUGH TUESDAY MORNING... .TODAY...Northeast winds 15 to 20 knots. Seas 3 to 5 feet. Showers with a chance of thunderstorms. Heavy rain is possible at times. .TONIGHT...North winds 20 to 25 knots with gusts up to 30 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave Detail: Northeast 3 feet at 4 seconds and south 1 foot at 5 seconds. Patchy fog in the evening. A chance of showers, mainly in the evening. .TUESDAY...North winds 20 to 25 knots with gusts up to 30 knots, diminishing to around 15 knots with gusts up to 20 knots in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet, subsiding to 3 to 4 feet in the afternoon. Wave Detail: Northeast 4 feet at 4 seconds. .TUESDAY NIGHT...Northeast winds around 10 knots, becoming southeast after midnight. Seas 2 to 4 feet. .WEDNESDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 4 seconds. A chance of showers in the afternoon. .WEDNESDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds. Showers with a chance of thunderstorms. .THURSDAY...North winds 10 to 15 knots, becoming northeast in the afternoon. Seas 3 to 4 feet. Showers with a chance of thunderstorms. .THURSDAY NIGHT...North winds around 15 knots. Seas 3 to 5 feet. Showers with a chance of thunderstorms in the evening, then showers likely after midnight. .FRIDAY...North winds 10 to 15 knots. Seas 3 to 5 feet. Showers likely. .FRIDAY NIGHT...North winds 10 to 15 knots. Seas 2 to 3 feet. A chance of showers. Winds and seas higher in and near thunderstorms. $$ GMZ370-375-012230- 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- 355 AM CST Mon Dec 1 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY MORNING... .TODAY...Northeast winds 15 to 20 knots with gusts up to 25 knots. Seas 5 to 7 feet, occasionally to 8 feet. Showers. Some thunderstorms may produce heavy rainfall late this morning and early afternoon. .TONIGHT...North winds 20 to 25 knots with gusts up to 30 knots. Seas 5 to 8 feet, occasionally to 10 feet. Wave Detail: North 6 feet at 5 seconds and south 1 foot at 5 seconds. A slight chance of thunderstorms in the evening. Patchy fog in the evening. A chance of showers. .TUESDAY...North winds 20 to 25 knots, diminishing to around 20 knots in the afternoon. Seas 5 to 8 feet, occasionally to 10 feet. Wave Detail: North 6 feet at 5 seconds. .TUESDAY NIGHT...Northeast winds 10 to 15 knots, becoming southeast after midnight. Seas 3 to 5 feet. Wave Detail: Northeast 3 feet at 5 seconds. .WEDNESDAY...Southeast winds 10 to 15 knots. Seas 2 to 4 feet. Wave Detail: East 2 feet at 4 seconds. A chance of showers in the afternoon. .WEDNESDAY NIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: Southeast 3 feet at 5 seconds. Showers with a chance of thunderstorms. .THURSDAY...South winds 10 to 15 knots, becoming east in the afternoon. Seas 4 to 5 feet. Showers with a chance of thunderstorms. .THURSDAY NIGHT...Northeast winds around 15 knots, becoming north after midnight. Seas 4 to 5 feet. Showers with a chance of thunderstorms. .FRIDAY...North winds 10 to 15 knots. Seas 4 to 5 feet. Showers. .FRIDAY NIGHT...North winds around 10 knots. Seas 3 to 4 feet. A chance of showers. Winds and seas higher in and near thunderstorms. $$