Marine Weather and Tide Forecast for South San Francisco, CA

SHORT TERM
Issued at 243 PM PST Mon Dec 8 2025 (This evening through Tuesday)

The stagnant pattern continues with the story being cloudy conditions returning tonight for areas that cleared around the Bay Area and clear conditions for much of the Central Coast. This should keep low temperatures generally in the 40s for Bay Area counties and Santa Cruz County. Elsewhere in the Central Coast, lows will vary from the upper 30s to low 40s for the interior portions, while c coastal areas sit closer to the mid 40s. A new forecast challenge also arrives for tonight as temperatures were a bit chillier than expected last night for the northern Salinas Valley and along the coast of the southern Monterey Bay area. For now kept NBM in for the lows; however, should temps drop like last night they may need to be adjusted a few degrees cooler.

LONG TERM
Issued at 243 PM PST Mon Dec 8 2025 (Tuesday night through next Sunday)

High pressure holds through the week, leading to dry conditions through the weekend. Temperatures should warm by mid week, before cooling a bit again over the weekend. The next chance for rain looks to be around December 15, where the NBM favors the best chances of rain around the North Bay with a 15-20% expanding to the East and South Bay counties and into Santa Cruz County. Ensembles do show the ridge flattening some which could allow a front to make it into the region. The details will likely change, so stay tuned.

AVIATION
(00Z TAFS)
Issued at 423 PM PST Mon Dec 8 2025

Low clouds and fog have receded from all TAF Sites but lingers in portions of the North Bay and interior East Bay. Expect cloud cover fill back over STS, APC and LVK into the evening and lower further into the night while the fog rebuilds and becomes thicker. SFO and SJC see CIGs arrive in the late night with some slight reductions in visibilities. Winds stay mostly light to moderate through the morning, with wind directions determined by more localized affects.
Cloud cover and fog will be slow to erode into Tuesday afternoon, but conditions look to improve into the late afternoon. However, the North and East Bay will continue to struggle with low clouds and fog, causing some doubt for clearing at APC . As cloud cover erodes, pockets of haze will affect much of the region.

Vicinity of SFO...VFR lasts into the late night. Winds become lighter into the night with scattered low clouds building into the area, along with some slight reduction in visibilities. IFR level CIGs fill into the late night with some weak northeasterly winds.
Cloud cover thins into the afternoon, but winds stay light.

SFO Bridge Approach...Similar to SFO.

Monterey Bay Terminals...VFR through the TAF period. Winds stay light for MRY through the TAF period, while SNS sees moderate northwest winds become light and southeasterly into the night. North to northwest winds return Tuesday afternoon with the potential for haze.

MARINE
(Tonight through next Saturday)
Issued at 243 PM PST Mon Dec 8 2025

Northerly flow remains due to high pressure off the California coast with moderate winds and locally fresh winds south of Point Sur. Winds increase to a strong breeze Tuesday into mid week across the outer waters. A new, long period northwesterly swell is expected by midday Wednesday, lasting through the latter half of the week.

MTR WATCHES/WARNINGS/ADVISORIES
CA...None.
PZ...Small Craft Advisory until 9 PM PST Tuesday for Pt Pinos to Pt Piedras Blancas 0-10 nm.