National Weather Service Marine Forecast FZUS56 KSGX

FZUS56 KSGX 171948
CWFSGX

Coastal Waters Forecast for California
National Weather Service San Diego CA
1248 PM PDT Tue Mar 17 2026

San Mateo Point to the Mexican border out 60 nm

PZZ700-180830
1248 PM PDT Tue Mar 17 2026

Synopsis for the far Southern California coast

At 1 PM, a 1022 mb high was 100 nautical miles west of Fort Bragg and a 1024 mb high was over Elko, NV. A 1013 mb low covered the northern Gulf of California, stretching south over Baja California. Variable weak onshore and offshore flow will alternate today through Wednesday morning. Weak onshore flow will prevail late Wednesday through Saturday.

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PZZ740-180830
Coastal Waters from San Mateo Point to the Mexican Border and out to 10 nm
1248 PM PDT Tue Mar 17 2026

TONIGHT
Wind variable less than 10 kt. Seas 3 ft. Wave Detail: W 1 foot at 11 seconds and S 3 ft at 15 seconds.

WED
Wind variable less than 10 kt. Seas 3 ft. Wave Detail: W 1 foot at 4 seconds, W 1 foot at 14 seconds and S 3 ft at 15 seconds.

WED NIGHT
Wind variable less than 10 kt. Seas 3 ft. Wave Detail: S 1 foot at 4 seconds, W 1 foot at 13 seconds and SW 3 ft at 14 seconds.

THU
Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Seas 3 ft. Wave Detail: W 2 ft at 5 seconds and SW 2 ft at 14 seconds.

THU NIGHT
Wind variable less than 10 kt. Seas 3 ft. Wave Detail: W 2 ft at 5 seconds and SW 2 ft at 14 seconds.

FRI
Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Seas 3 ft. Wave Detail: W 2 ft at 6 seconds and S 2 ft at 14 seconds.

FRI NIGHT
Wind variable less than 10 kt. Seas 3 ft. Wave Detail: NW 1 foot at 4 seconds, W 2 ft at 7 seconds and SW 2 ft at 14 seconds.

SAT
Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Seas 3 ft. Wave Detail: W 1 foot at 4 seconds, W 2 ft at 7 seconds and SW 2 ft at 15 seconds.

SAT NIGHT
Wind variable less than 10 kt. Seas 3 ft. Wave Detail: W 1 foot at 4 seconds, W 2 ft at 7 seconds and SW 2 ft at 14 seconds.

SUN
Wind variable less than 10 kt...becoming SW 10 kt in the afternoon. Seas 3 ft. Wave Detail: W 1 foot at 4 seconds, W 3 ft at 10 seconds and SW 2 ft at 14 seconds.

SUN NIGHT
Wind variable less than 10 kt. Seas 3 ft. Wave Detail: W 1 foot at 4 seconds, W 3 ft at 10 seconds and SW 2 ft at 14 seconds.

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PZZ745-180830
Waters from San Mateo Point to the Mexican Border Extending 10 to 60 nm out including San Clemente Island
1248 PM PDT Tue Mar 17 2026

TONIGHT
Wind SW 10 kt this evening...becoming variable less than 10 kt. Seas 3 to 4 ft. Wave Detail: SW 1 foot at 4 seconds, W 1 foot at 11 seconds and S 3 ft at 15 seconds.

WED
Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Seas 3 ft. Wave Detail: W 1 foot at 4 seconds, NW 1 foot at 14 seconds and S 3 ft at 15 seconds.

WED NIGHT
Wind variable less than 10 kt. Seas 3 ft. Wave Detail: S 1 foot at 4 seconds, NW 2 ft at 13 seconds and S 3 ft at 14 seconds.

THU
Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Seas 3 ft. Wave Detail: NW 2 ft at 12 seconds and S 3 ft at 14 seconds.

THU NIGHT
Wind W 10 kt. Seas 3 ft. Wave Detail: NW 2 ft at 5 seconds and S 2 ft at 14 seconds.

FRI
Wind variable less than 10 kt. Seas 3 to 4 ft. Wave Detail: NW 2 ft at 5 seconds and S 2 ft at 14 seconds.

FRI NIGHT
Wind variable less than 10 kt. Seas 3 to 4 ft. Wave Detail: W 1 foot at 4 seconds, W 3 ft at 7 seconds and S 2 ft at 14 seconds.

SAT
Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: NW 1 foot at 4 seconds, W 3 ft at 7 seconds and S 2 ft at 15 seconds.

SAT NIGHT
Wind variable less than 10 kt. Seas 3 to 4 ft. Wave Detail: W 1 foot at 4 seconds, W 3 ft at 7 seconds and SW 2 ft at 14 seconds.

SUN
Wind variable less than 10 kt. Seas 3 to 4 ft. Wave Detail: W 1 foot at 4 seconds, W 3 ft at 11 seconds and S 2 ft at 14 seconds.

SUN NIGHT
Wind NW 10 kt in the evening...becoming variable less than 10 kt. Seas 3 to 4 ft. Wave Detail: W 1 foot at 4 seconds, W 3 ft at 10 seconds and S 2 ft at 14 seconds.