Marine Weather Net

Freeport to Matagorda Ship Channel, TX Marine Forecast


REST OF TODAY

S
WINDS
10 - 15
KNOTS

TONIGHT

S
WINDS
10 - 15
KNOTS

WEDNESDAY

S
WINDS
10 - 15
KNOTS

WEDNESDAY NIGHT

S
WINDS
10 - 15
KNOTS

The Marine Weather Forecast In Detail:
GMZ350 Forecast Issued: 649 AM CDT Tue Sep 23 2025

Rest Of Today...South Winds 10 To 15 Knots. Seas 2 To 3 Feet. Wave Detail: Southeast 3 Feet At 5 Seconds. A Chance Of Showers And Thunderstorms Until Late Afternoon, Then A Slight Chance Of Showers And Thunderstorms Late.
Tonight...South Winds 10 To 15 Knots With Gusts Up To 20 Knots. Seas 2 To 3 Feet. Wave Detail: South 3 Feet At 5 Seconds.
Wednesday...South Winds 10 To 15 Knots. Seas 2 To 3 Feet. Wave Detail: South 3 Feet At 5 Seconds. A Chance Of Thunderstorms. A Chance Of Showers In The Morning, Then Showers Likely In The Afternoon.
Wednesday Night...South Winds 10 To 15 Knots, Becoming Southwest After Midnight. Seas 2 To 3 Feet. Wave Detail: South 2 Feet At 5 Seconds. Showers And Thunderstorms Likely In The Evening, Then Showers With A Chance Of Thunderstorms After Midnight.
Thursday...North Winds 10 To 15 Knots. Seas 2 To 3 Feet. Wave Detail: Northwest 2 Feet At 3 Seconds And South 2 Feet At 5 Seconds. A Chance Of Thunderstorms. Showers Likely, Mainly In The Morning.
Thursday Night...North Winds 10 To 15 Knots. Seas Around 2 Feet. Wave Detail: North 2 Feet At 4 Seconds.
Friday...North Winds 10 To 15 Knots. Seas 2 To 3 Feet.
Friday Night...East Winds 10 To 15 Knots. Seas Around 2 Feet.
Saturday...Northeast Winds 10 To 15 Knots. Seas Around 2 Feet.
Saturday Night...East Winds 10 To 15 Knots. Seas Around 2 Feet. Winds And Seas Higher In And Near Thunderstorms.
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Area Forecast Discussion
National Weather Service Houston/Galveston TX
704am CDT Tuesday September 23 2025

Issued at 1222am CDT Tuesday September 23 2025

For today's outlook, I'm going with a perstence-ish forecast, emphasis on the 'ish'. Much like recent days, I suspect the radar to be a little more active than the guidance suggests. But mid/upper ridging appears a little less stout for today. In addition, a surge of very high PWATs (Precipitable Waters) (2"+) is pushing into the coastline this morning. This tells me that rain chances are at least somewhat higher than yesterday (at least near the coast). But it also tells me there's a better chance of locally heavy rainfall, especially in our coastal counties. We'll be watching the radar carefully this morning in case one of these locally heavy showers / storms decides to drop a quick few inches of rainfall.

If you don't receive rain today, perhaps you will finally get your chance on Wednesday. The LL atmosphere remains PWAT (Precipitable Water) rich as a deep-layer trough digs southward, providing synoptic lift and gradually increasing shear. Meanwhile, a cold front pushes southward, enhancing LL convergence. The setup appears favorable for scattered to widespread showers and thunderstorms. Parameters are favorable for locally heavy rainfall capable of localized flooding. In addition, conditions appear conditionally favorable for a few stronger thunderstorms capable of a damaging wind gust. So the radar will be worth a watchful eye on Wednesday as well. For areas near the coast, the rain and thunderstorm threat continues into Thursday morning before a much drier air mass sweeps into the region in the front's wake. Temperatures and humidity continue to appear lower during the second half of the week. Perhaps we can muster a few days in the 80s with lows well down into the 60s. Not bad for late September. Should feel better compared to the humid 90s we've seen of late.

Self

Marine
Issued at 1222am CDT Tuesday September 23 2025

Moderate south to southeast winds along with scattered showers and thunderstorms are expected today. On Wednesday, winds will shift southwest ahead of an approaching cold front. The front will bring a better chance of more widespread shower and thunderstorm activity on Wednesday into Thursday morning. A few stronger thunderstorms capable of gusty winds possible. Winds become more northerly in the front's wake on Thursday and Friday. Winds are expected to be moderate to strong at times, possible warranting caution flags.

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