Marine Weather and Tide Forecast for Houston, TX

DISCUSSION
Issued at 122 PM CDT Wed May 13 2026

Latest visible satellite imagery shows a generally tranquil day across TX, with only a few mid to high clouds. With the ridge building overhead, afternoon temperatures will be slightly warmer than yesterday. Light winds will prevail, though a stronger gusts from the southeast will be possible during the seabreeze late this afternoon. As the surface high shifts eastward, winds will become dominantly southeasterly, leading to a gradual increase in Gulf moisture. Therefore, cannot rule out patchy to areas of fog late tonight/early Thursday morning, particularly south of I-10.

An even hotter day is anticipated on Thursday as the mid to upper- lvl ridge axis moves overhead. Highs in the low 90s are likely for most of southeast TX. Persistent southerly surface flow will transport more moisture inland. In fact, PWs will increase to the 1.1 to 1.4 inch range through the weekend. Consequently, warm (or hot) days will continue, accompanied by a gradual increase in humidity levels.

The mid to upper lvl pattern begins to change Friday and into the weekend as the ridge breaks down, allowing for the passage of a few disturbances/shortwaves near the region. A tightening pressure gradient associated with lee cyclogenesis over west Tx/southern Rockies will lead to moderate southerly winds Friday into the weekend. This pattern will persist through the weekend, thus isolated diurnally-driven showers and storms cannot be ruled out, especially on Sunday. Beyond Monday, the pattern aloft remains unsettled with multiple disturbances riding along the flow. The next best rain and storm chances could potentially be early next week as a frontal boundary attempts to move through.

JM

AVIATION
(00Z TAF Issuance)
Issued at 553 PM CDT Wed May 13 2026

Look for some late night and early morning fog development, moreso south of I-10 and also CXO. Last night vsbys briefly fell to around 1 mile at some spots and don't see any reason to expect anything different tonight. Any fog will quickly burn off after sunrise. Otherwise, VFR conditions will prevail. 47

MARINE
Issued at 122 PM CDT Wed May 13 2026

Light and variable winds and low seas will continue this afternoon and tonight. Surface high pressure will gradually shifts to our east tonight into Thursday, eventually bringing onshore winds across the Upper TX coast. Moderate onshore winds can be expected in the afternoon/early evening driven by the seabreeze, followed by offshore winds early in the morning from the landbreeze. A tighter pressure gradient across the Plains will result in elevated winds (15 to 20+ knots) and building seas after Friday. Rain chances remain minimal this week with the next best chance returning early next week.

JM

PRELIMINARY POINT TEMPS/POPS
College Station (CLL) 66 90 68 89 / 0 0 0 0 Houston (IAH) 70 92 71 89 / 0 0 0 0 Galveston (GLS) 73 84 76 83 / 0 0 0 0

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