Galveston Bay Marine Forecast
| 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. |
| Area Forecast Discussion National Weather Service Houston/Galveston TX 1240pm CDT Sat July 18 2026 Issued at 1151am CDT Sat July 18 2026 Warm weather continues today with ridging in place directly overtop the area, sandwiched between two lows/troughs, one over West TX/New Mexico, and the other a weak upper level low over the NE Gulf. The broader weather pattern hasn't changed drastically, with the ridge overhead expected to move northwesterly towards the TX/OK Panhandle these next several days. Midlevel heigheights will vary from around 592-596 dam throughout this period, with PWs from anywhere around 1-2 inches. 850mb temps are still forecasted to increase these next few days (reaching 19-23C next week), thus we should see hotter weather arrive as well. Rain chances are generally on the low end throughout this period, only 20% at most during the daytime hours (mostly afternoon and evening). We could see a jump in probability of precipitation around Tue/Wed/Thurs next week, as the aforementioned upper level low, now Invest 91L over the NE Gulf, moves westward. Amplified ridging is likely to minimize impacts to SE Texas, though we'll continue to keep a close eye on it (and we'd advise others to do the same as well). In summary, hot weather and increasing temperatures are expected into next week. Highs will be in the upper 80s/mid 90s this afternoon, climbing to the upper 90s next week. Heat indices will be in the triple digits daily. Rain chances will be low, but still within the realm of possibility. In the absence of rainfall, heat stress is anticipated to be High to Extreme from Tuesday-Thursday with heat index values of 103-109. Regardless, it would be wise to be mindful of the heat. Make sure to wear light, loose fitting cloths and drink plenty of water. Limit time outdoors during the hottest parts of the day. 03 Marine Issued at 1151am CDT Sat July 18 2026 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. 47 NOAA Houston/Galveston TX Office: Watches - Warnings - Advisories TX...None. GM...None. |
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