Marine Weather Net

Freeport to Matagorda Ship Channel, TX Marine Forecast


TODAY

S
WINDS
10 - 15
KNOTS

TONIGHT

SW
WINDS
10 - 15
KNOTS

FRIDAY

W
WINDS
5 - 10
KNOTS

FRIDAY NIGHT

SE
WINDS
5 - 10
KNOTS

The Marine Weather Forecast In Detail:
GMZ350 Forecast Issued: 505 AM CDT Thu Aug 27 2026

Today...Southwest Winds Around 10 Knots, Becoming South 10 To 15 Knots Late. Seas Around 2 Feet This Morning, Then 1 Foot Or Less. Wave Detail: South 2 Feet At 4 Seconds, Becoming South 1 Foot At 4 Seconds. A Slight Chance Of Showers With Isolated Thunderstorms.
Tonight...Southwest Winds 10 To 15 Knots. Seas Around 2 Feet. Wave Detail: South 2 Feet At 4 Seconds. A Slight Chance Of Showers With Isolated Thunderstorms In The Evening, Then A Chance Of Showers And Thunderstorms After Midnight.
Friday...West Winds 5 To 10 Knots, Becoming Southeast In The Afternoon. Seas 1 Foot Or Less. Wave Detail: South 1 Foot At 4 Seconds. A Chance Of Showers And Thunderstorms.
Friday Night...Southeast Winds 5 To 10 Knots. Seas 1 Foot Or Less. Wave Detail: South 1 Foot At 4 Seconds.
Saturday...East Winds 5 To 10 Knots. Seas 1 Foot Or Less. Wave Detail: Southeast 1 Foot At 3 Seconds. A Chance Of Showers In The Morning.
Saturday Night...Southeast Winds 5 To 10 Knots. Seas 1 Foot Or Less, Then Around 2 Feet After Midnight. Wave Detail: Southeast 1 Foot At 4 Seconds.
Sunday...Southeast Winds 5 To 10 Knots. Seas 1 Foot Or Less.
Sunday Night...Southeast Winds 10 To 15 Knots. Seas Around 2 Feet.
Monday...South Winds 5 To 10 Knots. Seas Around 2 Feet. A Chance Of Showers And Thunderstorms In The Morning.
Monday Night...Southeast Winds 10 To 15 Knots. Seas Around 2 Feet. Winds And Seas Higher In And Near Thunderstorms.
SHARE THIS PAGE:           
Area Forecast Discussion
National Weather Service Houston/Galveston TX
620am CDT Thu August 27 2026

Issued at 1230am CDT Thu August 27 2026

Relief from recent hot and dry conditions i son the way for most of the region today and heading into the weekend as the upper level ridge slides slightly westward into the Southern Rockies. This pattern shift brings a northerly flow aloft to the area, opening the path for a series of shortwave disturbances to move across the region. At the surface, we're monitoring a weak frontal boundary extending across the Middle/Lower MS Valley. This boundary is currently supporting an MCS, which will gradually weaken as it moves south toward the LA coast. Hi-Res/CAMs models show activity igniting across the region overnight (2am - 5am) as the frontal boundary associated with the MCS (Mesoscale Convective System, a complex of thunderstorms which becomes organized on a scale larger than the individual thunderstorms) pushes southward. While the bulk of the dynamics and instability will remain to the east, a few overnight and early morning showers and storms could still produce gusty winds around 20 to 30 mph). A lull in precipitation can be expected later this morning, but the boundary is expected to meander near the region, pulling Gulf moisture inland and serving as the focal point for scattered convection later this afternoon.

After morning showers/storms, concentrated primarily north of I-10, additional storm development is expected this afternoon. This coincides with peak daytime heating, the arrival of passing shortwaves aloft, and decent frontogenesis in the 850-700 hPa layer. While the severe weather risk remains low, strong storms capable of producing localized gusty winds cannot be ruled out. Additionally, with PWAT (Precipitable Water) values in the 2.0 to 2.3 inch range, heavy downpours could potentially produce localized minor flooding.

Additional rounds of showers and storms are possible on Friday, with the best chances south of I-10 and over the coastal waters. Ridge aloft expands eastward this weekend into early next week, bringing a more northeasterly flow aloft across the region. At the surface, weak easterly waves/troughs will keep daily rain/storm chances.

In terms of temperatures, some locations west of I-45 could still reach near 100F today. However, increased cloud cover and precipitation chances should keep most other areas in the mid to upper 90s. Beyond Friday, high temperatures will generally remain in the mid 90s.

JM

Marine
Issued at 1230am CDT Thu August 27 2026

Light to moderate onshore winds, generally around 10 to 15 knots are expected tonight and Thursday, though a brief wind shift to the west/north is possible after sunrise. Scattered showers and storms are expected today with the best chances by late afternoon through the evening hours. Rain and storm chances will continue overnight and Friday. Strong winds and building seas will be possible near any storms. A daily risk of showers and storms will be possible through the upcoming week. Overall, outside any storms, light to moderate onshore winds and low seas are expected this weekend and into midweek.

JM

NOAA Houston/Galveston TX Office: Watches - Warnings - Advisories
TX...None. GM...None.