Coastal Waters Forecast
Issued by NWS Houston/Galveston, TX
Issued by NWS Houston/Galveston, TX
640 FZUS54 KHGX 011902 CWFHGX Coastal Waters Forecast for Texas National Weather Service Houston/Galveston TX 102 PM 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. GMZ300-020730- 102 PM CST Mon Dec 1 2025 .Synopsis For High Island to the Matagorda Ship Channel Out 60 NM including Galveston and Matagorda Bays. Marine conditions are currently in a relative state of improvement on the coastal waters, though the emphasis here is very much on the word relative. Winds and seas are still high enough that small craft need to exercise caution on the nearshore Gulf waters, and a small craft advisory remains in effect on the offshore Gulf waters. Widespread rain and isolated thunderstorms are also still occurring, mainly over the upper coastal waters - Galveston Bay and adjacent portions of the Gulf out 60 nm and beyond into the open Gulf. This evening, look for winds to become more northerly and increase again to 20 to 25 knots with gusts to 30 knots as the coastal low moves off to the east. The Small Craft Advisory on the offshore waters expands back to include all coastal waters through tonight and into early Tuesday morning before winds and seas begin to subside. Advisory-level conditions are expected to continue on the Gulf waters through the morning while winds remain above 20 knots, and on the offshore 20-60 nm Gulf waters into the early afternoon before seas there are finally expected to fall below 7 feet. Despite a short respite Tuesday through Wednesday morning, the unsettled weather pattern will mean another bout with rain, storms, and potentially even periods of sea fog later in the week as we deal with another coastal low and frontal passage. $$ GMZ335-020730- Galveston Bay- 102 PM CST Mon Dec 1 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM CST THIS EVENING THROUGH LATE TONIGHT... .THIS AFTERNOON...North winds 10 to 15 knots. Bay waters slightly choppy. Showers with a slight chance of thunderstorms. .TONIGHT...North winds 15 to 25 knots. Bay waters choppy to rough. Showers likely with a slight chance of thunderstorms in the evening. Patchy fog in the evening. .TUESDAY...North winds 15 to 20 knots with gusts up to 25 knots, diminishing to around 15 knots in the afternoon. Bay waters choppy, diminishing to slightly choppy in the afternoon. .TUESDAY NIGHT...East winds 5 to 10 knots. Bay waters smooth. .WEDNESDAY...Southeast winds 5 to 10 knots. Bay waters smooth. A chance of showers in the afternoon. .WEDNESDAY NIGHT...Southeast winds 10 to 15 knots. Bay waters slightly choppy. Showers with a chance of thunderstorms. .THURSDAY...Northeast winds 10 to 15 knots. Bay waters slightly choppy. A chance of thunderstorms. Showers. .THURSDAY NIGHT...North winds 10 to 15 knots. Bay waters slightly choppy. Showers likely. .FRIDAY...North winds 10 to 15 knots, diminishing to around 10 knots in the afternoon. Bay waters slightly choppy, diminishing to smooth in the afternoon. Showers likely, mainly in the morning. .FRIDAY NIGHT...North winds 5 to 10 knots. Bay waters smooth. A chance of showers in the evening. Winds and waves higher in and near thunderstorms. $$ GMZ330-020730- Matagorda Bay- 102 PM CST Mon Dec 1 2025 ...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM CST THIS EVENING THROUGH LATE TONIGHT... .THIS AFTERNOON...North winds 10 to 15 knots with gusts up to 20 knots. Bay waters slightly choppy. A slight chance of showers. Patchy fog. .TONIGHT...North winds around 20 to 25 knots. Bay waters choppy, increasing to rough. A chance of showers in the evening. Patchy fog 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. A chance of showers in the afternoon. .WEDNESDAY NIGHT...Southeast winds around 10 knots, becoming southwest after midnight. Bay waters smooth to slightly choppy. Showers with a chance of thunderstorms. .THURSDAY...North winds around 15 knots, increasing to 15 to 20 knots in the afternoon. Bay waters slightly choppy, increasing to choppy in the afternoon. A chance of thunderstorms. Showers likely. .THURSDAY NIGHT...North winds 15 to 20 knots. Bay waters choppy. A chance of showers in the evening, then showers likely after midnight. .FRIDAY...North winds 10 to 15 knots. Bay waters slightly choppy. Showers likely, mainly in the morning. .FRIDAY NIGHT...North winds 5 to 10 knots. Bay waters smooth. Winds and waves higher in and near thunderstorms. $$ GMZ350-355-020730- Coastal waters from Freeport to Matagorda Ship Channel TX out 20 NM-Coastal waters from High Island to Freeport TX out 20 NM- 102 PM CST Mon Dec 1 2025 ...SMALL CRAFT SHOULD EXERCISE CAUTION THROUGH 6 PM CST THIS EVENING... ...SMALL CRAFT ADVISORY IN EFFECT FROM 6 PM CST THIS EVENING THROUGH TUESDAY MORNING... .THIS AFTERNOON...North winds 15 to 20 knots. Seas 3 to 6 feet. Wave Detail: East 5 feet at 6 seconds. Showers with a slight chance of thunderstorms. Patchy fog late. .TONIGHT...North winds 20 to 25 knots with gusts up to 30 knots. Seas 5 to 7 feet, occasionally to 9 feet. Wave Detail: Northeast 4 feet at 6 seconds. Patchy fog in the evening. A chance of showers, mainly in the evening. .TUESDAY...North winds 20 to 25 knots, diminishing to around 15 knots in the afternoon. Seas 4 to 7 feet, occasionally to 8 feet. Wave Detail: Northeast 5 feet at 6 seconds. .TUESDAY NIGHT...Northeast winds around 10 knots, becoming southeast after midnight. Seas 2 to 4 feet. Wave Detail: Northeast 3 feet at 6 seconds. .WEDNESDAY...Southeast winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 4 seconds. A chance of showers in the afternoon. .WEDNESDAY NIGHT...South winds 10 to 15 knots. Seas 2 to 3 feet. Wave Detail: Southeast 3 feet at 5 seconds. Showers with a chance of thunderstorms. .THURSDAY...North winds 15 to 20 knots. Seas 3 to 5 feet. Showers with a chance of thunderstorms. .THURSDAY NIGHT...North winds 15 to 20 knots. Seas 3 to 5 feet. Showers likely. .FRIDAY...North winds 15 to 20 knots, diminishing to around 15 knots in the afternoon. Seas 3 to 5 feet. Showers likely, mainly in the morning. .FRIDAY NIGHT...North winds around 10 knots. Seas 2 to 3 feet. A chance of showers. Winds and seas higher in and near thunderstorms. $$ GMZ370-375-020730- 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- 102 PM CST Mon Dec 1 2025 ...SMALL CRAFT ADVISORY IN EFFECT THROUGH TUESDAY AFTERNOON... .THIS AFTERNOON...Northeast winds 15 to 25 knots. Seas 5 to 7 feet, occasionally to 8 feet. Wave Detail: Northeast 5 feet at 6 seconds. Showers with a chance of thunderstorms. Patchy fog late. .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 7 feet at 6 seconds. 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 7 feet at 6 seconds. .TUESDAY NIGHT...Northeast winds 10 to 15 knots, becoming southeast after midnight. Seas 3 to 5 feet. Wave Detail: Northeast 4 feet at 6 seconds. .WEDNESDAY...Southeast winds 10 to 15 knots. Seas 2 to 4 feet. Wave Detail: Northeast 3 feet at 6 seconds and southeast 2 feet at 3 seconds. A chance of showers in the afternoon. .WEDNESDAY NIGHT...South winds 10 to 15 knots. Seas 3 to 4 feet. Wave Detail: South 4 feet at 6 seconds. Showers with a chance of thunderstorms. .THURSDAY...Northwest winds 15 to 20 knots, becoming northeast in the afternoon. Seas 4 to 6 feet, occasionally to 8 feet. Showers with a chance of thunderstorms. .THURSDAY NIGHT...North winds 15 to 20 knots. Seas 4 to 6 feet, occasionally to 8 feet. Showers with a chance of thunderstorms in the evening, then showers likely after midnight. .FRIDAY...North winds 15 to 20 knots, becoming northeast around 15 knots in the afternoon. Seas 4 to 5 feet. Showers. .FRIDAY NIGHT...Northeast winds 10 to 15 knots. Seas 2 to 4 feet. A chance of showers. Winds and seas higher in and near thunderstorms. $$