Port Costa, California — live current conditions, hourly and 7-day forecasts, NWS alerts, aviation weather, radar and satellite imagery, tides and marine conditions for Port Costa, Contra Costa County.
Tides, marine forecast and fishing conditions near Port Costa. Nearest NOAA tide station:
Flight conditions near Port Costa — sourced from the FAA Aviation Weather Center. Nearest reporting station: locating…
Live animated radar for Port Costa and surroundings — RainViewer.
NOAA GOES-16 GEOCOLOR — live animated loop updated every 10 minutes. Shows cloud cover, storm systems and weather patterns across the continental US.
Source: NOAA/NESDIS GOES-East · Public domain · Auto-updates on page reload
Port Costa clings to the southeastern curve of the Carquinez Strait, a place where the Sacramento River surrenders its fresh waters to the salty embrace of San Pablo Bay. It lies 1.4 miles west of Benicia, CA (from Benicia, CA: bearing 261°T), and is situated 9.5 miles west-north-west of Concord. Cliffs, weathered and ochre, rise sharply behind the small collection of buildings, their faces etched with the stories of wind and water. The air here carries a perpetual tang of brine, a constant reminder of the vast Pacific not far beyond. Below, the water itself is a restless, shifting mirror, reflecting the wide California sky, sometimes a steely grey, other times a brilliant, almost painful blue. Gulls wheel and cry overhead, their calls a punctuation to the low thrum of distant freighters navigating the deep channel that runs just offshore. This sliver of land was once a bustling hub, a vital terminus for the railroad and a gateway to the fertile valleys inland. Ships once crowded the waterfront, loading grain and wool, the ceaseless activity a testament to the region's agricultural bounty. Now, a quieter economy prevails, one drawn to the unique character of Port Costa, its historic buildings whispering tales of a bygone era. The old warehouses, some repurposed, others standing as weathered monuments, lend a particular, almost melancholic beauty to the waterfront, their corrugated iron roofs catching the late afternoon sun in a warm, diffused glow. Local businesses cater to those who appreciate the unvarnished charm and the persistent spirit of this place, a spirit as resilient as the sea grass that anchors the steep slopes.
| Location | Port Costa, Contra Costa County, California |
| Coordinates | 38.04631°N, 122.1833°W |
| Timezone | Pacific Time (America/Los_Angeles) |
| ZIP Code(s) | 94569 |
| Area Code | 510 |
| Page generated | June 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |