Marine Weather and Tide Forecast for Port Aransas, TX

DISCUSSION
Issued at 123 AM CDT Wed Aug 5 2026

A persistent H5 ridge continues to linger over the Four Corners region. This ridge has been contracting over the past 48 hours, allowing weak mid-level energy to assist with isolated shower and thunderstorm development along the seabreeze this afternoon. As the week progresses, the aforementioned ridge is expected to expand heading into the weekend and an easterly wave looks to round the southern periphery of the Bermuda High into our eastern counties on Sunday. PoPs will be kept below 15% across the CWA into Saturday to account for seabreeze convection each afternoon. Can't rule out a 20- 25% chance around the Victoria Crossroads on Sunday and Monday as moisture from the easterly wave works inland.

Seasonably warm conditions stretch on through the forecast period, with high temperatures largely in the triple digits west of US-281 and and 90s elsewhere. Expect heat indices to consistently range between 100 to 110 degrees areawide, but remaining at or above 110 degrees for multiple hours would be isolated. Even though we may remain below heat advisory criteria, please remember to drink plenty of water and take frequent breaks in shade or A/C as we are entering the hottest time of the year climatologically in South Texas.

AVIATION
(12Z TAFS)
Issued at 610 AM CDT Wed Aug 5 2026

A mix of MVFR and VFR conditions this morning will become predominantly VFR by mid to late morning. VFR conditions will prevail through the afternoon and into tonight before brief periods of MVFR conditions return toward early Thursday morning, mainly after 08Z. S-SE winds generally 15-20 knots with gusts around 25 knots is expected by this afternoon.

MARINE
Issued at 123 AM CDT Wed Aug 5 2026

A gentle to moderate onshore (largely from the S-SE) flow can be expected through the forecast period, occasionally fresh winds can be observed along the nearshore bays in the afternoon. Seas will generally range from 2-3 feet through the period. Daily rain chances will be under 20% through at least Thursday.

FIRE WEATHER
Issued at 123 AM CDT Wed Aug 5 2026

Min RHs will generally drop into the 25-35% range each afternoon through the week over the western Brush country and Rio Grande Plains. These low RHs combined with ERCs in the 55-75th percentile range will support localized elevated fire weather conditions over this region each day. Winds will gradually increase out of the E-SE in the 12 to 18 kt range during the afternoons. Daily rain chances will generally be 10% or less through the week.

PRELIMINARY POINT TEMPS/POPS
Corpus Christi 94 79 94 78 / 10 0 0 0 Victoria 97 76 97 76 / 10 0 10 0 Laredo 104 79 104 78 / 10 0 0 0 Alice 99 76 99 75 / 10 0 10 0 Rockport 91 81 92 80 / 0 0 0 0 Cotulla 102 77 103 76 / 10 0 0 0 Kingsville 96 77 97 77 / 10 0 10 0 Navy Corpus 92 82 92 81 / 0 0 0 0

CRP WATCHES/WARNINGS/ADVISORIES
TX...None.
GM...None.