Baffin Bay to Port Mansfield, TX Marine Forecast
| Rest Of Today...Southeast Winds 5 To 10 Knots. Seas 1 To 2 Feet. Wave Detail: Southeast 2 Feet At 5 Seconds. |
| Tonight...Southeast Winds Around 10 Knots, Becoming South After Midnight. Seas 2 To 3 Feet. Wave Detail: Southeast 2 Feet At 4 Seconds. |
| Tuesday...Southeast Winds 5 To 10 Knots. Seas 1 To 2 Feet. Wave Detail: Southeast 2 Feet At 5 Seconds. |
| Tuesday Night...Southeast Winds 5 To 10 Knots. Seas 2 To 3 Feet. Wave Detail: Southeast 2 Feet At 5 Seconds. |
| Wednesday...Southeast Winds Around 5 Knots, Becoming 5 To 10 Knots In The Afternoon. Seas 1 To 2 Feet. Wave Detail: Southeast 2 Feet At 5 Seconds. A Slight Chance Of Showers Early In The Morning, Then A Slight Chance Of Showers And Thunderstorms Late In The Morning. |
| Wednesday Night...Southeast Winds Around 10 Knots, Becoming South After Midnight. Seas 2 To 3 Feet. Wave Detail: Southeast 2 Feet At 5 Seconds. |
| Thursday...South Winds 5 To 10 Knots, Becoming Southeast Early In The Afternoon, Then Increasing To 10 To 15 Knots Late In The Afternoon. Seas 2 To 3 Feet. |
| Thursday Night...Southeast Winds 10 To 15 Knots, Becoming South After Midnight. Seas 2 To 3 Feet. |
| Friday...South Winds 10 To 15 Knots, Becoming Southeast Late In The Afternoon. Seas 2 To 3 Feet. |
| Friday Night...South Winds Around 15 Knots. Seas 2 To 4 Feet. Winds And Seas Higher In And Near Thunderstorms. |
| Area Forecast Discussion ...UPDATED National Weather Service Brownsville TX 1240am CDT Tuesday September 8 2026 Issued at 1046pm CDT Monday September 7 2026 Hot, mainly dry, and at times breezy conditions will continue to be the theme through early next week as an anomalously strong and elongated 591-594 dam heat ridge complex remains anchored over the southern U.S. This persistent and dominant feature in our pattern will continue to foster record to near record-breaking heat over the next several days (see CLIMATE SECTION for more details). High temperatures are forecast to continue in the upper 90s to mid 100s through the forecast period with overnight lows in the 70s to lower 80s. Peak heat indices ranging between 105-115F degrees will warrant day-to-day or near daily Special Weather Statements (SPSs) and/or Heat Advisories through this week. The combination of very hot temperatures during the day and very warm temperatures at night providing little relief, widespread Major (Level 3 of 4) Heat Risk to increasing areas of Extreme (Level 4 of 4) Heat Risk will be the case through this week (at least). Aided by persistent southeasterly winds, low grade (20-30%) chances for showers and thunderstorms along the sea breeze is possible Tuesday through Thursday of this week as Deep South Texas sits on the on the southern periphery of the aforementioned heat ridge. The best chances for any showers and storms will be along and east of IH- 69C/US-281. Additional rain chances (20-30%) are possible Sunday through the early part of next week, according to a few computer models. Marine Issued at 1046pm CDT Monday September 7 2026 Outside of any shower and thunderstorms, marine conditions will remain favorable through this week with low to moderate winds and seas (i.e. wave heigheights between 1-3 feet). Moderate seas are possible over the weekend into early next week. Climate Issued at 1046pm CDT Monday September 7 2026 Record to near record-breaking temperatures are possible through Saturday, courtesy of a persistent and strong 591-594 dam heat ridge complex established over the southern U.S. Below is a list of the record highs from Tuesday September 8th to Saturday September 12th. Tuesday September 8, 2026: Brownsville: 102F set in 2023 Harlingen: 103F set in 2023 McAllen: 105F in 2012 Wednesday September 9, 2026: Brownsville: 102F in 1893 Harlingen: 102F in 2023 McAllen: 103F in 2023 & 2016 Thursday September 10, 2026: Brownsville: 102F in 2023 Harlingen: 102F in 2023 McAllen: 105F in 2023 Friday September 11, 2026: Brownsville: 100F in 1900 & 1893 Harlingen: 103F in 1937 McAllen: 103F in 2023 Saturday September 12, 2026: Brownsville: 100F in 1919 Harlingen: 101F in 2011 & 1930 McAllen: 103F in 1987 NOAA Brownsville TX Office: Watches - Warnings - Advisories TX... Heat Advisory from noon today to 6pm CDT this evening for TXZ251>255-353. GM...None. |
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