Station Name: SAN FRANCISCO BAY 2.8 MI N OF SAN MATEO BRIDGE CA
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 0 feet

Nearest Address:
San Francisco Bay
San Mateo, CA 94401
San Mateo County

GPS Coordinates: 37.63078889, -122.2432

Nearby Water Temperatures

High Surf Advisory issued January 7 at 1:01AM PST until January 8 at 3:00PM PST by NWS San Francisco CA

Effective: Wed January 7, 2026, 1:01 AM
Expires: Wed January 7, 2026, 3:15 PM

* WHAT...Large breaking waves up to 22 feet, strong rip currents and sneaker waves. * WHERE...Pacific Coast from Sonoma county to Monterey county, excluding Northern Monterey Bay. * WHEN...From 1 AM to 3 PM PST Thursday. * IMPACTS...There is an increased risk for sneaker waves, strong rip currents, and beach erosion. Large breaking waves can overpower swimmers resulting in significant physical injury and increase the risk of drowning.

Inexperienced swimmers should remain out of the water due to dangerous surf conditions.

Extreme Cold Watch issued January 7 at 12:56AM PST until January 9 at 9:00AM PST by NWS San Francisco CA

Effective: Wed January 7, 2026, 12:56 AM
Expires: Wed January 7, 2026, 9:00 AM

* WHAT...Very cold conditions with temperatures in the low to mid 30s possible except for Interior Monterey and San Benito Counties where temperatures in the upper 20s are possible. * WHERE...The East Bay and San Francisco Bay Shoreline, The Central Coast, The Santa Clara Valley and Eastern Hills, The Salinas and Carmel Valleys and Hollister Area, The Marin Hills, The Santa Cruz Mountains, and North Bay Interior Valleys. * WHEN...1 AM Friday to 9 AM Friday. * IMPACTS...Cold conditions will be hazardous to sensitive populations such as unhoused individuals. Cold conditions may damage or kill sensitive crops, plants, and vegetation if appropriate precautions are not taken. Prolonged exposure to the cold conditions will lead to hypothermia for people, pets, and livestock.

Ensure portable heaters are working properly and are used correctly to avoid sparking a fire indoors. Do not use generators or grills inside as carbon monoxide poisoning can result. Check with your local, city, or county officials for information on available warming centers. Be sure to dress in layers if outdoors. Make sure that pets and livestock have adequate food, unfrozen water, and warmth. Cover or tend to sensitive crops, plants, and vegetation.

Extreme Cold Watch issued January 7 at 8:58AM PST until January 9 at 9:00AM PST by NWS San Francisco CA

Effective: Wed January 7, 2026, 8:58 AM
Expires: Wed January 7, 2026, 8:00 PM

* WHAT...Very cold conditions with temperatures in the low to mid 30s possible except for Interior Monterey and San Benito Counties where temperatures in the upper 20s are possible. * WHERE...The East Bay and San Francisco Bay Shoreline, The Central Coast, The Santa Clara Valley and Eastern Hills, The Salinas and Carmel Valleys and Hollister Area, The Marin Hills, The Santa Cruz Mountains, and North Bay Interior Valleys. * WHEN...From late Thursday night through Friday morning. * IMPACTS...Cold conditions will be hazardous to sensitive populations such as unhoused individuals. Cold conditions may damage or kill sensitive crops, plants, and vegetation if appropriate precautions are not taken. Prolonged exposure to the cold conditions will lead to hypothermia for people, pets, and livestock.

Ensure portable heaters are working properly and are used correctly to avoid sparking a fire indoors. Do not use generators or grills inside as carbon monoxide poisoning can result. Check with your local, city, or county officials for information on available warming centers. Be sure to dress in layers if outdoors. Make sure that pets and livestock have adequate food, unfrozen water, and warmth. Cover or tend to sensitive crops, plants, and vegetation.

Beach Hazards Statement issued January 7 at 1:01AM PST until January 8 at 3:00PM PST by NWS San Francisco CA

Effective: Wed January 7, 2026, 1:01 AM
Expires: Wed January 7, 2026, 3:15 PM

* WHAT...Hazardous beach conditions expected with strong rip currents, sneaker waves, and breaking waves up to 15 feet. * WHERE...Northern Monterey Bay. * WHEN...From late tonight through Thursday afternoon. * IMPACTS...Dangerous conditions are forecast along the shoreline. Hazards include sneaker waves, strong rip currents, and large breaking waves.

Stay off of jetties, piers, rocks, and other waterside infrastructure. Remain out of the water to avoid hazardous surf and NEVER turn your back on the ocean. Monitor local weather, surf and tide forecasts at www.weather.gov/mtr.