We often have “Catalina Eddy” circulations of SE winds in the morning: it is topographic steering of wind, bending along the coastline and swinging around Catalina Island, and California’s longshore current (NW-to-SE) refracts along the shape of the ocean floor as it rises. (Map from surfline.com, Catalina Eddy.)

On gray days, sometimes low puffy cumulus continue to blow SE-to-NW, but at the surface level in afternoons, flags still blow straight out West-to-East.
When winds blow differently at two levels, it is similar to this Royal Meteorological Society diagram of the “sea breeze front” (rmets.org):


http://www.scwxa.org/eddydemo.jpg

In my neighborhood, the birds sing more than on sunny days.