Bay Area/ San Francisco/ Weather & Environment

Sun's Out, Tides Up: Coastal Flood Alert for Sunny San Francisco Bay Weekend

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Published on October 24, 2026
Sun's Out, Tides Up: Coastal Flood Alert for Sunny San Francisco Bay WeekendSource: Google Street View

San Francisco is lining up a sunny Saturday with a high near 70, followed by another mild day Sunday. The bigger concern for waterfront visitors is not rain but rising tides, with a coastal flood advisory covering low-lying Bay shoreline areas through Thursday.

Sunny Saturday Gives Way To A Cooler Week

Saturday should stay clear and dry, with light northeast winds becoming west winds around 9 mph by late afternoon.

Sunday will be mostly sunny with a high near 75, while Monday and Tuesday cool to around 66 and 65 degrees. That is a more restrained weekend than the earlier outlook described by Hoodline, with the latest forecast settling closer to normal fall temperatures.

Coastal Flood Advisory Covers Bay Shorelines

The National Weather Service says minor coastal flooding is possible from 8 a.m. Saturday through 3 p.m. Thursday, with up to 1.9 feet of water above ground level in low-lying areas near shorelines and tidal waterways. The advisory includes parts of the San Francisco Bay shoreline, where high tides could cause isolated road closures, flooding around infrastructure and additional coastal erosion, according to the National Weather Service.

High tides could affect waterfront areas during the advisory period. Anyone heading to waterfront paths, beaches or low-lying roads should allow extra time, avoid barricades and never drive through water of unknown depth.

Fog And Rain Chances Later In The Week

Limited early fog is possible in Sonoma County. Thursday stays partly sunny, with no precipitation chances expected until the end of next week.

Rain chances are expected to increase toward the end of next week and into the weekend. For Saturday's outdoor plans, the forecast is straightforward: sunglasses during the day, a light layer after dark and extra caution near the water.