National Weather Service Marine Forecast FZUS56 KSGX

FZUS56 KSGX 171930
CWFSGX

Coastal Waters Forecast for California
National Weather Service San Diego CA
1230 PM PDT Fri Jul 17 2026

San Mateo Point to the Mexican border out 60 nm

PZZ700-180830
1230 PM PDT Fri Jul 17 2026

Synopsis for the far Southern CA coast

At 1 PM, a 1033 mb high was 800 nautical miles west of Cape Blanco, OR and a 1010 mb low was centered over Death Valley Nat'l Park. Moderate southerly flow over the coastal waters is expected through Saturday morning. Westerly flow returns for Saturday into next week.

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PZZ740-180830
Coastal Waters from San Mateo Point to the Mexican Border and out to 10 nm
1230 PM PDT Fri Jul 17 2026

TONIGHT
Wind S 10 kt. Seas 3 ft. Wave Detail: S 1 foot at 4 seconds, W 2 ft at 8 seconds and S 2 ft at 15 seconds.

SAT
Wind variable less than 10 kt...becoming SW 10 kt in the afternoon. Seas 3 ft. Wave Detail: S 1 foot at 4 seconds, W 2 ft at 8 seconds and S 2 ft at 12 seconds.

SAT NIGHT
Wind variable less than 10 kt. Seas 3 ft. Wave Detail: SW 1 foot at 4 seconds, W 2 ft at 8 seconds and S 2 ft at 12 seconds.

SUN
Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: W 1 foot at 4 seconds, W 2 ft at 7 seconds and S 3 ft at 12 seconds.

SUN NIGHT
Wind W 10 kt in the evening...becoming variable less than 10 kt. Seas 3 to 5 ft. Wave Detail: W 1 foot at 4 seconds, W 2 ft at 7 seconds and S 5 ft at 13 seconds.

MON
Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Seas 4 to 5 ft. Wave Detail: W 1 foot at 4 seconds, S 5 ft at 13 seconds and W 1 foot at 15 seconds.

MON NIGHT
Wind variable less than 10 kt. Seas 4 to 5 ft. Wave Detail: W 1 foot at 4 seconds, S 5 ft at 12 seconds and W 1 foot at 14 seconds.

TUE
Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Seas 4 to 5 ft. Wave Detail: W 1 foot at 4 seconds, SW 5 ft at 12 seconds and W 1 foot at 14 seconds.

TUE NIGHT
Wind NW 10 kt. Seas 4 to 6 ft. Wave Detail: W 3 ft at 5 seconds and SW 4 ft at 10 seconds.

WED
Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Seas 4 to 5 ft. Wave Detail: NW 1 foot at 4 seconds, W 3 ft at 7 seconds and SW 4 ft at 10 seconds.

WED NIGHT
Wind W 10 kt in the evening...becoming variable less than 10 kt. Seas 4 to 6 ft. Wave Detail: W 1 foot at 4 seconds, W 4 ft at 7 seconds and S 4 ft at 15 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
1230 PM PDT Fri Jul 17 2026

TONIGHT
Wind S 10 kt. Seas 3 ft. Wave Detail: S 1 foot at 4 seconds, W 2 ft at 8 seconds and SE 2 ft at 15 seconds.

SAT
Wind variable less than 10 kt...becoming SW 10 kt in the afternoon. Seas 3 ft. Wave Detail: SE 1 foot at 4 seconds, W 2 ft at 8 seconds and S 2 ft at 12 seconds.

SAT NIGHT
Wind variable less than 10 kt. Seas 3 ft. Wave Detail: W 1 foot at 4 seconds, W 2 ft at 8 seconds and S 3 ft at 12 seconds.

SUN
Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Seas 3 to 5 ft. Wave Detail: W 1 foot at 4 seconds, W 2 ft at 7 seconds and S 4 ft at 12 seconds.

SUN NIGHT
Wind W 10 kt in the evening...becoming variable less than 10 kt. Seas 5 to 6 ft. Wave Detail: W 1 foot at 4 seconds, W 2 ft at 7 seconds and S 5 ft at 12 seconds.

MON
Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Seas 5 to 6 ft. Wave Detail: W 1 foot at 4 seconds, S 5 ft at 13 seconds and NW 1 foot at 15 seconds.

MON NIGHT
Wind W 10 kt in the evening...becoming variable less than 10 kt. Seas 5 to 6 ft. Wave Detail: W 1 foot at 4 seconds, S 6 ft at 12 seconds and NW 1 foot at 14 seconds.

TUE
Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Seas 5 to 6 ft. Wave Detail: W 1 foot at 4 seconds, S 5 ft at 12 seconds and NW 1 foot at 14 seconds.

TUE NIGHT
Wind NW 10 to 15 kt. Seas 5 to 6 ft. Wave Detail: W 3 ft at 5 seconds and SW 4 ft at 10 seconds.

WED
Wind NW 10 to 15 kt. Seas 4 to 6 ft. Wave Detail: W 2 ft at 4 seconds, W 4 ft at 7 seconds and SW 4 ft at 10 seconds.

WED NIGHT
Wind W 10 to 15 kt. Seas 6 to 7 ft. Wave Detail: NW 2 ft at 4 seconds, W 4 ft at 7 seconds and S 5 ft at 15 seconds.