Lowcountry/ Weather & Environment

Sunny, Windy Charleston Day Brings Flood Alerts Before Weekend Soaker

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Published on October 28, 2026
Sunny, Windy Charleston Day Brings Flood Alerts Before Weekend SoakerLowcountry Downtown Skyline — Weather Skyline Backdrop
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Charleston is expected to see mostly sunny skies Wednesday, with a high near 76 degrees and northeast winds around 15 mph, the forecast says.

Coastal Flooding And Rip Currents Remain A Concern

A Coastal Flood Advisory was in effect through noon Wednesday for Charleston County, with up to 1 foot of saltwater inundation possible along shorelines and tidal waterways. High tide occurred around 9:57 a.m.; the advisory expired at noon, and water levels were expected to fall afterward. The National Weather Service advisory was in effect through noon Wednesday.

A High Risk for dangerous rip currents now continues through Thursday evening, with rough surf and persistent northeast winds making ocean swimming hazardous. Beachgoers should stay near lifeguards, and anyone caught in a rip current should float, avoid swimming directly against it and signal for help if needed. The National Weather Service extended the risk through Thursday evening.

The flood concern is part of a multi-day high-tide pattern: the full moon on Oct. 26 and lunar perigee on Oct. 28 have boosted astronomical tides, while persistent northeast winds have added to water levels along the coast. The National Weather Service says tides and wind-driven departures should gradually ease as the week goes on, though morning high tides remain the main period to watch. Higher morning or early-afternoon tides remain a concern, particularly Thursday morning, as the Charleston forecast discussion notes.

Dry And Warmer Through Friday

Wednesday night is forecast to drop to 63 degrees. Thursday's high is expected near 77, and Friday's near 78, according to the forecast.

Boaters face a separate hazard offshore even as land conditions stay dry through Friday. Small Craft Advisories are in effect, with elevated marine conditions, according to the marine forecast.

Saturday's high is forecast near 75. Showers are possible, according to the Charleston-area forecast.