Heat Persists in the Southwest; Elevated to Critical Fire Weather in the Great Basin; Poor Air Quality in the West

Dangerous heat will persist across the Southwest U.S. through this week, easing by next week. The heat will focus further east in the Great Plains and Mississippi Valley beginning next week. Elevated to locally critical fire weather conditions will persist for the Great Basin today. Poor air quality lingers for the Northwest, Great Basin, Central Rockies into the Plains. Read More >

Last Update: 818 AM PDT Tue Aug 4 2026

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San Francisco Bay Area/Monterey, CA Local Forecast Office

12NM SW San Francisco CA

Marine Zone Forecast

Today

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

Tonight

S wind around 5 kt. Seas 3 to 4 ft. Wave detail: NW 4 ft at 9 seconds. Patchy smoke after midnight.

Wed

S wind 5 to 10 kt. Seas around 3 ft. Wave detail: NW 3 ft at 8 seconds.

Wed Night

SW wind around 5 kt. Seas around 3 ft. Wave detail: NW 3 ft at 9 seconds. Patchy fog after midnight.

Thu

SW wind around 5 kt. Seas around 3 ft. Wave detail: NW 2 ft at 8 seconds. Patchy fog in the morning.

Thu Night

NW wind around 5 kt. Seas around 3 ft in the evening, then around 2 ft or less. Wave detail: NW 2 ft at 8 seconds.

Fri

NW wind 5 to 10 kt. Seas around 3 ft. Wave detail: NW 2 ft at 6 seconds.

Fri Night

NW wind 5 to 10 kt. Seas 3 to 4 ft. Wave detail: NW 3 ft at 6 seconds and SW 2 ft at 13 seconds.

Sat

NW wind around 5 kt, backing to W in the afternoon. Seas 3 to 5 ft. Wave detail: NW 4 ft at 8 seconds and SW 2 ft at 14 seconds.

Sat Night

NW wind 10 to 15 kt. Seas 3 to 5 ft, building to 5 to 7 ft after midnight. Wave detail: NW 6 ft at 9 seconds.

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

in the deep water channel...mixed seas of 2 to 4 ft at 10 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 1.9 kt at 08:51 am tuesday and 2.8 kt at 09:16 pm tuesday.

.....SAN FRANCISCO BAR/FOURFATHOM BANK FORECAST..... IN THE DEEP WATER CHANNEL...Mixed seas of 2 to 4 ft at 10 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 1.9 kt at 08:51 AM Tuesday and 2.8 kt at 09:16 PM Tuesday.