Heavy Rainfall on the Western Gulf Coast; Severe Thunderstorms in the Southern Plains Friday

A multi-day heavy rainfall event will continue over the western Gulf Coast through Monday. Slight Risks of excessive rainfall have been issued, and Flood Watches remain in effect through Monday evening. Scattered severe storms capable of producing large hail and damaging winds are possible across western portions of Texas and Oklahoma on Friday. Read More >

Last Update: 231 PM PDT Thu May 21 2026

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San Francisco Bay Area/Monterey, CA Local Forecast Office

12NM SW San Francisco CA

Marine Zone Forecast

Tonight

W wind 5 to 10 kt, easing to around 5 kt late this evening and early morning, backing to SW around 5 kt late. Seas 3 to 5 ft. Wave detail: NW 5 ft at 10 seconds and S 2 ft at 15 seconds. Patchy dense fog late this evening and overnight.

Fri

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

Fri Night

S wind 5 to 10 kt. Seas 3 to 5 ft. Wave detail: NW 4 ft at 10 seconds and S 2 ft at 14 seconds.

Sat

S wind 5 to 10 kt, rising to 10 to 15 kt in the afternoon. Seas 3 to 5 ft. Wave detail: S 4 ft at 9 seconds and NW 4 ft at 9 seconds.

Sat Night

SW wind 5 to 10 kt. Seas 3 to 4 ft. Wave detail: NW 3 ft at 9 seconds and SW 3 ft at 9 seconds.

Sun

SW wind 5 to 10 kt. Seas around 3 ft. Wave detail: NW 3 ft at 9 seconds and SW 2 ft at 15 seconds.

Sun Night

W wind 5 to 10 kt. Seas 3 to 4 ft. Wave detail: W 3 ft at 11 seconds and SW 2 ft at 15 seconds.

Memorial Day

W wind 5 to 10 kt. Seas 3 to 4 ft. Wave detail: NW 3 ft at 11 seconds and SW 2 ft at 16 seconds.

Mon Night

W wind 10 to 15 kt, becoming NW 15 to 20 kt after midnight. Seas 3 to 5 ft. Wave detail: NW 4 ft at 8 seconds.

Tue

NW wind 20 to 25 kt. Seas 4 to 6 ft. Wave detail: NW 5 ft at 9 seconds.

Tue Night

NW wind 20 to 25 kt. Seas 5 to 8 ft, building to 7 to 10 ft after midnight. Wave detail: NW 9 ft at 11 seconds and SW 2 ft at 15 seconds.

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

in the deep water channel...mixed seas of 4 to 6 feet at 11 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 09:50 pm thursday and 2.8 kt at 08:56 am friday.

.....SAN FRANCISCO BAR/FOURFATHOM BANK FORECAST..... IN THE DEEP WATER CHANNEL...Mixed seas of 4 to 6 feet at 11 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 09:50 PM Thursday and 2.8 kt at 08:56 AM Friday.