Port Mansfield, TX to the Rio Grande River 20 - 60 NM Marine Forecast
| Rest Of Today...Northeast Winds 15 To 20 Knots. Seas 4 To 5 Feet. Wave Detail: Northeast 5 Feet At 7 Seconds. |
| Tonight...East Winds 15 To 20 Knots. Seas 4 To 6 Feet, Occasionally To 8 Feet. Wave Detail: East 5 Feet At 7 Seconds. |
| Friday...East Winds 15 To 20 Knots. Seas 5 To 7 Feet, Occasionally To 9 Feet. Wave Detail: East 6 Feet At 7 Seconds. A Slight Chance Of Showers In The Afternoon. |
| Friday Night...Southeast Winds 20 To 25 Knots. Seas 6 To 9 Feet, Occasionally To 11 Feet. Wave Detail: Southeast 7 Feet At 7 Seconds. A Chance Of Showers. |
| Saturday...South Winds 20 To 25 Knots, Diminishing To 15 To 20 Knots Late In The Afternoon. Seas 6 To 9 Feet, Occasionally To 11 Feet. Wave Detail: Southeast 8 Feet At 7 Seconds. A Chance Of Showers. |
| Saturday Night...South Winds 15 To 20 Knots. Seas 5 To 7 Feet, Occasionally To 9 Feet. Wave Detail: South 6 Feet At 7 Seconds. A Chance Of Showers With A Slight Chance Of Thunderstorms In The Evening, Then Showers Likely With A Chance Of Thunderstorms After Midnight. |
| Sunday...South Winds Around 15 Knots, Becoming Northeast Late In The Morning, Then Increasing To 15 To 20 Knots In The Afternoon. Seas 5 To 7 Feet, Occasionally To 9 Feet. A Chance Of Thunderstorms. Showers. |
| Sunday Night...Northeast Winds 15 To 20 Knots. Seas 5 To 7 Feet, Occasionally To 9 Feet, Subsiding To 4 To 5 Feet After Midnight. A Chance Of Thunderstorms. Showers. |
| Monday...Northeast Winds Around 15 Knots, Becoming North In The Afternoon. Seas 4 To 5 Feet. Showers. |
| Monday Night...North Winds 15 To 20 Knots. Seas 5 To 7 Feet, Occasionally To 9 Feet. Showers Likely. Winds And Seas Higher In And Near Thunderstorms. |
| Area Forecast Discussion National Weather Service Brownsville TX 455pm CST Thu Nov 27 2025 Issued at 1105am CST Thu Nov 27 2025 Fall like conditions (Deep South Texas style) have returned just in time for Thanksgiving. Highs today and tomorrow will be in the mid to upper 70s, with a few low 80s in the lower Valley. Temperatures begin to increase again this weekend as south/southeasterly flow returns ahead of the next system. Temperatures Friday and Saturday will rise into the mid 80s. Winds will also pick up as the gradient increases Friday into Saturday, mainly along the coast. This will lead to elevated rip currents at area beaches. The next cold front will move through Saturday night/early Sunday resulting in much cooler weather through the middle of next week. Highs will be in the low 60s across the Ranchlands to mid 70s in the lower Valley for Sunday, with temperatures in the upper 50s to upper 60s for highs on Monday. Overnight temperatures take a bit of a nosedive with 40s and low 50s expected Sunday night though Tuesday night. Temperatures will slowly increase through next week. The cold front will also bring an increasing chance of rain. Low chances (10-20%) mainly along the coast, are forecast for Friday into Saturday. Low to medium (20-60%) chances are expected on Sunday across the CWA (County Warning Area) with chances tapering off through the rest of the week. Happy Thanksgiving! Marine Issued at 1105am CST Thu Nov 27 2025 Generally favorable conditions have returned to the waters off the lower Texas coast. Adverse marine conditions return on Friday in response to another approaching cold front and Small Craft Advisories have been issued for Friday afternoon through Saturday afternoon for all waters. The front is expected to move through on Sunday with conditions gradually improving Saturday night. Isolated showers and thunderstorms are expected through the period that will bring locally enhanced winds and seas. NOAA Brownsville TX Office: Watches - Warnings - Advisories TX...None. GM...Small Craft Advisory from noon Friday to 6pm CST Saturday for GMZ130-132-135-150-155-170-175. |
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