Last Update: 228 AM PDT Wed Oct 21 2026

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12NM SW San Francisco CA

Marine Zone Forecast


Today
SE wind around 5 kt, veering to NW late. Seas 4 to 6 ft. Wave detail: NW 5 ft at 11 seconds and S 2 ft at 14 seconds. A slight chance of showers until late afternoon, then a chance of showers late.
Tonight
NW wind around 5 kt. Seas 3 to 4 ft. Wave detail: NW 4 ft at 10 seconds and S 2 ft at 14 seconds. A chance of showers in the evening, then showers likely after midnight.
Thu
NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave detail: NW 3 ft at 11 seconds and S 2 ft at 15 seconds. Showers likely, mainly in the morning.
Thu Night
NW wind 10 to 15 kt. Seas 3 to 4 ft, building to 4 to 6 ft after midnight. Wave detail: NW 6 ft at 8 seconds and SW 2 ft at 16 seconds.
Fri
NW wind 5 to 10 kt. Seas 4 to 6 ft. Wave detail: NW 4 ft at 9 seconds and SW 4 ft at 15 seconds.
Fri Night
NW wind 5 to 10 kt. Seas 5 to 7 ft. Wave detail: NW 5 ft at 10 seconds and SW 3 ft at 16 seconds.
Sat
N wind around 5 kt. Seas 4 to 6 ft. Wave detail: NW 4 ft at 10 seconds and SW 3 ft at 15 seconds.
Sat Night
N wind around 5 kt. Seas 3 to 5 ft. Wave detail: NW 3 ft at 10 seconds and SW 2 ft at 15 seconds.
Sun
N wind around 5 kt. Seas 3 to 4 ft.
Sun Night
NW wind around 5 kt. Seas around 3 ft.

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

in the deep water channel...mixed seas of 4 to 6 ft at 13 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 1.8 kt at 02:06 pm wednesday and 1.8 kt at 02:05 am thursday.




.....SAN FRANCISCO BAR/FOURFATHOM BANK FORECAST..... IN THE DEEP WATER CHANNEL...Mixed seas of 4 to 6 ft at 13 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 1.8 kt at 02:06 PM Wednesday and 1.8 kt at 02:05 AM Thursday.
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228 AM PDT Wed Oct 21 2026
 
 

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