NWS Marine Forecast


   GMZ300-080515-  1141 AM CDT Tue Oct 7 2025    .Synopsis For High Island to the Matagorda Ship Channel Out 60 NM  including Galveston and Matagorda Bays.    Isolated showers will be possible over the coastal waters through  this week, primarily in the pre-dawn and early morning hours.  The best potential for these showers for at least the next night  or two appears to be farther offshore, 20 to 60 nm out.  Light onshore winds and and low seas will continue through  Wednesday, then a period of moderate northeasterly winds is  expected as early as Wednesday night and persist through Friday  with seas between 4 and 6 feet. Small Craft Advisories are  possible in the coastal waters during this timeframe.    $$
   GMZ335-080515-  Galveston Bay-  1141 AM CDT Tue Oct 7 2025    THIS AFTERNOON  Northeast winds around 5 knots, becoming  southeast late. Bay waters smooth. A slight chance of showers.  TONIGHT  Southeast winds 5 to 10 knots, becoming northeast  after midnight. Bay waters smooth.  WEDNESDAY  Northeast winds 10 to 15 knots. Bay waters slightly  choppy.  WEDNESDAY NIGHT  Northeast winds around 15 knots, increasing to  15 to 20 knots after midnight. Bay waters slightly choppy,  increasing to choppy after midnight.  THURSDAY  Northeast winds 15 to 20 knots, diminishing to around  15 knots in the afternoon. Bay waters choppy, diminishing to  slightly choppy in the afternoon.  THURSDAY NIGHT  Northeast winds 15 to 20 knots. Bay waters  choppy.  FRIDAY  Northeast winds 15 to 20 knots, diminishing to around  15 knots in the afternoon. Bay waters choppy, diminishing to  slightly choppy in the afternoon.  FRIDAY NIGHT  Northeast winds 10 to 15 knots. Bay waters  slightly choppy.  SATURDAY  East winds 10 to 15 knots. Bay waters slightly  choppy.  SATURDAY NIGHT  Southeast winds around 10 knots. Bay waters  smooth to slightly choppy.    $$