Extreme Heat Lingers; Severe Thunderstorms for Portions of the Plains and Southeast; Heavy Rainfall Threats

Gusty winds and heavy rainfall may impact the Big Island of Hawaii as a nearby tropical system passes west of the islands. From the Southwest U.S., Rockies and across the Gulf Coast, heavy rainfall could lead to isolated flash flooding. Severe thunderstorms are expected for areas of the Plains, Gulf Coast and Southeast through Tuesday. Extreme heat lingers for the southern Plains and Southwest. Read More >

Last Update: 242 AM PDT Mon Aug 24 2026

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San Francisco Bay Area/Monterey, CA Local Forecast Office

12NM SW San Francisco CA

Marine Zone Forecast

Today

W wind 5 to 10 kt. Seas 3 to 4 ft. Wave detail: NW 3 ft at 8 seconds and S 2 ft at 15 seconds. Patchy dense fog early this morning.

Tonight

NW wind 5 to 10 kt. Seas around 3 ft. Wave detail: W 3 ft at 7 seconds and S 2 ft at 14 seconds.

Tue

NW wind 10 to 15 kt. Seas around 3 ft. Wave detail: NW 3 ft at 6 seconds and SW 2 ft at 14 seconds.

Tue Night

NW wind 15 to 20 kt, easing to 10 to 15 kt after midnight. Seas 3 to 4 ft. Wave detail: NW 3 ft at 6 seconds and S 2 ft at 13 seconds.

Wed

NW wind 10 to 15 kt. Seas 3 to 4 ft. Wave detail: NW 3 ft at 6 seconds and SW 2 ft at 13 seconds.

Wed Night

NW wind 10 to 15 kt, rising to 15 to 20 kt after midnight. Seas 4 to 6 ft. Wave detail: NW 5 ft at 7 seconds and S 2 ft at 13 seconds.

Thu

NW wind 10 to 15 kt, rising to 15 to 20 kt in the afternoon. Seas 4 to 5 ft. Wave detail: NW 4 ft at 7 seconds and S 2 ft at 12 seconds.

Thu Night

NW wind 15 to 20 kt. Seas 5 to 7 ft. Wave detail: NW 6 ft at 8 seconds and S 2 ft at 12 seconds.

Fri

NW wind 10 to 15 kt. Seas 4 to 6 ft. Wave detail: NW 5 ft at 8 seconds and S 2 ft at 12 seconds.

Fri Night

NW wind 10 to 15 kt. Seas 5 to 7 ft. Wave detail: NW 6 ft at 8 seconds and S 2 ft at 13 seconds.

.....san francisco bar/fourfathom bank forecast.....

in the deep water channel...mixed seas of 2 to 4 ft at 12 seconds.

across the bar...swell can be more than twice as high across the bar than surrounding waters. Waves are also more prone to break, particularly during strong ebb currents. Maximum ebb current of 1.3 kt at 03:01 pm monday and 1.9 kt at 03:07 am tuesday.

.....SAN FRANCISCO BAR/FOURFATHOM BANK FORECAST..... IN THE DEEP WATER CHANNEL...Mixed seas of 2 to 4 ft at 12 seconds. ACROSS THE BAR...Swell can be more than twice as high across the bar than surrounding waters. Waves are also more prone to break, particularly during strong ebb currents. Maximum ebb current of 1.3 kt at 03:01 PM Monday and 1.9 kt at 03:07 AM Tuesday.