San Francisco Bay South of the Bay Bridge Marine Forecast
| Tonight...N Wind Around 5 Kt. |
| Martin Luther King Jr Day...N Wind Around 5 Kt. |
| Mon Night...N Wind Around 5 Kt. |
| Tue...Ne Wind Around 5 Kt. |
| Tue Night...Ne Wind Around 5 Kt. |
| Wed...Ne Wind Around 5 Kt, Backing To N Around 5 Kt In The Afternoon. |
| Wed Night...Nw Wind Around 5 Kt In The Evening, Becoming Light And Variable. |
| Thu...N Wind Around 5 Kt. |
| Thu Night...W Wind Around 5 Kt. Patchy Fog After Midnight. |
| Fri...N Wind Around 5 Kt, Backing To Nw In The Afternoon. Patchy Fog In The Morning. |
| Fri Night...W Wind Around 5 Kt. |
| Area Forecast Discussion National Weather Service San Francisco CA 946pm PST Sunday Jan 18 2026 .SHORT TERM... Issued at 1251pm PST Sunday Jan 18 2026 (This evening through Monday) Temperatures continue to warm as mostly sunny sky conditions have returned to the region. However, there are still high clouds streaming in from the northwest. As such, temperatures are likely to warm into the low to upper 60s across the North Bay, East Bay, and greater San Francisco Bay Area . Across the Central Coast, temperatures are likely to warm into the low to mid 70s. Tonight, look for tule fog to return to the interior East Bay Valleys and Delta (similar timing as the previous nights) and continue through midmorning on Monday. Fog may also impact the North Bay Valleys in response to fog development in the Russian River Valley and/or tule fog advecting in from the east. Monday's afternoon temperatures will be similar to those today (Sunday) as the region continues to be under the influence of high pressure. This ridge axis extends all the way up to just off of the British Columbia coast. However, high clouds will persist over the region through at least midweek. Long Term Issued at 1251pm PST Sunday Jan 18 2026 (Monday night through next Saturday) By mid to late week, troughing will develop out over the north central Pacific. This feature is forecast to develop a cut-off upper level low that will gradually approach the region late in the week. However, there does not appear to be much of a moisture source associated with it, so rainfall has been pushed back until at least Monday, January 26th. With that said, the low pressure system aloft will at least cool temperatures down to near seasonal averages after a prolonged period of very warm afternoon temperatures. Thus, we will have to wait a bit longer for much needed rainfall to return. Marine (Tonight through next Saturday) Issued at 944pm PST Sunday Jan 18 2026 Moderate winds continue to affect the San Pablo Bay, the Delta, and through the Golden Gate through Wednesday as light to gentle northeast to north winds continue across the rest of the coastal waters. Expect slight increases in winds into the late week. Low seas up to around 6 feet continue through the middle of the week as a northwest swell builds. Chances for rain could return late next weekend. NOAA San Francisco Bay Area Office: Watches - Warnings - Advisories CA...None. PZ...None. x.com/nwsbayarea |
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