, Issued at 106 PM PST Wed Dec 10 2025 (This evening through Thursday)
San Francisco and the immediate bay shoreline stayed mostly cloud free this morning while the North Bay, South Bay, and East Bay valley locations remain socked in with low clouds. This is as offshore flow just above the surface pushed tule fog and/or stratus into these areas. We have seen these clouds erode in the South Bay while they remain over the far interior East Bay and North Bay. We are expecting these clouds to mix out and give way to a few hours of Sun, except across the far interior East Bay and bay side parts of Marin County. This has made for a challenging forecast over the past week or so, especially with respect to afternoon maximum temperatures.
Look for more of the same overnight and into early Thursday morning with tule stratus and/or fog to return to much of the aforementioned areas. Elsewhere, we are expecting mostly clear skies overnight with temperatures dropping into the 40s across much of the lower elevations and mid-to-upper 30s in the interior Central Coast.
For Thursday, expecting temperatures to warm a degree or two in the non-cloud covered areas as a ridge of high pressure continues to build over the region. Again, places which happen to see full sunshine are likely to be warmer than currently forecast. But on the other hand, cooler than currently forecast if cloud cover holds on throughout the day.
..issued at 106 PM PST Wed Dec 10 2025 (Thursday night through next Tuesday)
Temperatures will warm by a few degrees each day through Saturday as the mid-to-upper level ridge axis shifts inland. This will be the beginning of the ridge breaking down over our region. Thus, we are likely to return closer to normal temperatures (still likely up to 10 degrees above seasonal averages) and potentially unsettled weather conditions as zonal flow returns to the region, especially across the North Bay. This would bring the potential for light rain to the North Bay and Bay Area by Monday or Tuesday with chances lingering through the middle of next week. However, the clusters do not point to a significant trough developing until around December 20th.
(18z TAFS) Issued at 919 AM PST Wed Dec 10 2025
Slightly different set up this morning with SF Bay showing more VFR, but N, E, and S Bay still remains locked in just like the last few days. N and E Bay terminals will hold onto the IFR conditions through this afternoon with some clearing late this afternoon. For tonight, highest conf for CIGS and FG will continue to be N and E Bay terminals. SF Bay looks to be VFR or MVFR with some br/hz. One hi-res models shows some CIGS over OAK tomorrow morning, but conf is too low to include them at this time. Monterey Bay remains VFR.
Vicinity of SFO, A brief build up of CIGS has already begun to fade. Expect VFR there afternoon. Winds will be NE then onshore push late and NE again tonight.
SFO Bridge Approach, VFR. Low chance for slantwise vis issues due to haze.
Monterey Bay Terminals, VFR.
(today through Monday) Issued at 919 AM PST Wed Dec 10 2025
High pressure off the coast and low pressure inland will maintain northerly fresh breezes across the outer waters with light to gentle breezes near shore. Light offshore flow through the San Francisco Bay and Delta result in light easterly flow through the Golden Gate. A new, long period northwesterly swell anticipated to arrive today, lasting into this weekend.
Issued at 1224 AM PST Wed Dec 10 2025
Long period swell will reach the coast Wednesday - Friday. This energy brings strong rip currents, an increased risk for sneaker waves, and large breaking waves. The Bodega Bay Buoy is reporting a WNW swell of 9 feet with a 13 second period. That translates to breaking waves of 12-16 feet along west facing beaches. This coincides with nice warm weather, which will likely lure more people to the beach under a false sense of security. A Beach Hazard Statement is in effect through Friday evening. Respect the power of the ocean and never turn your back on it.
Ca, Beach Hazards Statement through Friday evening for CAZ006-505- 509-529-530.
PZ, Small Craft Advisory until 3 AM PST Thursday for Pt Arena to Pt Reyes 10-60 NM.
Small Craft Advisory until 3 PM PST this afternoon for Pigeon Pt to Pt Pinos 10-60 NM.
