textproduct: San Francisco Bay Area

KEY MESSAGES

Updated at 1238 PM PDT Mon Jul 6 2026

- Seasonably cool temperatures through Tuesday before a warming trend arrives for the second half of the week

- Marine layer stratus develops each evening and overnight before retreating to the coast each morning and afternoon

- Long period southwest swell causes an increased risk of sneaker waves and strong rip currents Tuesday through Friday

SHORT TERM

Issued at 1238 PM PDT Mon Jul 6 2026 (This evening through Tuesday night)

The marine layer was slightly deeper overnight which resulted in further inland extent into the valleys this morning. However, visible satellite imagery is showing gradual clearing back to the coast as of early this afternoon. That said, locations along the coast may very well not see the sun at all today, or maybe just brief breaks in the cloud cover. Temperatures will remain seasonably cool this afternoon.

For tonight and into Tuesday morning, expecting coastal stratus to return back into the inland valleys. Once the low clouds retreat to the coast by Tuesday afternoon, expect slightly warmer temperatures compared to previous days.

LONG TERM

Issued at 1238 PM PDT Mon Jul 6 2026 (Wednesday through next Sunday)

A gradual warming trend will begin Wednesday, yet temperatures will still be a few degrees below seasonal averages. As high pressure strengthens over the Desert Southwest and southern California, temperatures will warm to near seasonal averages and potentially slightly above. That said, only expecting Minor HeatRisk with isolated pockets of Moderate in the warmest interior spots on Thursday. All in all, a typical summer time pattern with stratus keeping conditions cooler near the coast while the interior warms up.

AVIATION

(00Z TAFS) Issued at 427 PM PDT Mon Jul 6 2026

The marine layer is about 1,500 feet deep and will remain consistent through the TAF period. That allows me to rely heavily on the persistence forecast, or simply a repeat of what we've observed over the last 24 hours. All terminals are expected to develop a ceiling overnight, but the duration will vary from a few hours inland to all day along the coast.

Vicinity of SFO...The stratus picture looks nearly identical to 24 hours ago with a massive bank of clouds along the coast and a small finger creeping through the Golden Gate. These clouds will spread within the marine layer to the East Bay and then wrap around to SFO. Yesterday the ceiling developed at 0240Z, and that's a good guess for tonight as well. The ceilings should stay above 1,000 feet, but if they do dip into IMC, the most likely time is between 06Z and 12Z.

SFO Bridge Approach...Broadly similar to SFO, however the ceilings may take a few more hours to fully envelop the Bay after reaching the terminal.

Monterey Bay Terminals...The ceilings never cleared at MRY today, and there's a good chance they won't tomorrow either. SNS is currently clear, but long duration ceilings will roll in very soon and will persist through midday Tuesday.

MARINE

(Tonight through next Saturday) Issued at 427 PM PDT Mon Jul 6 2026

Northwest winds increase from fresh to strong breezes with near gale force gusts through the day and persist into the weekend. In response, moderate seas continue to build into rough by Wednesday as the southwest swell impacts our coastal waters.

BEACHES

Issued at 1238 PM PDT Mon Jul 6 2026

A Beach Hazards Statement remains in effect for Pacific coast beaches from Tuesday morning through Friday afternoon. Long period southwesterly swell will create an increased risk of sneaker waves and strong rip currents, as well as breaking waves up to 10 feet. This will be especially true for south and southwest facing beaches with moderate to steep slopes along the North Bay, San Francisco Peninsula, and Santa Cruz coasts. Sneaker waves can sweep across the shoreline without warning, pulling people into the sea from rocks, jetties and beaches. Dangerous swimming and surfing conditions and localized beach erosion can be expected. Stay off of jetties, piers, rocks, and other waterside infrastructure. Remain out of the water to avoid hazardous surf and NEVER turn your back on the ocean. Monitor local weather, surf and tide forecasts at www.weather.gov/mtr.

MTR WATCHES/WARNINGS/ADVISORIES

CA...Beach Hazards Statement from late tonight through Friday afternoon for CAZ006-505-509-529-530.

PZ...Small Craft Advisory from 9 AM Tuesday to 9 PM PDT Wednesday for Mry Bay-Pigeon Pt to Pt Pinos 0-10 nm-Pt Arena to Pt Reyes 0-10 nm.

Small Craft Advisory from 3 PM Tuesday to 9 PM PDT Wednesday for Pigeon Pt to Pt Pinos 10-60 NM-Pt Reyes to Pigeon Pt 0-10 nm.

Small Craft Advisory from 9 PM this evening to 9 PM PDT Wednesday for Pt Pinos to Pt Piedras Blancas 0-10 nm.

Small Craft Advisory from 3 AM Tuesday to 9 PM PDT Wednesday for Pt Arena to Pt Reyes 10-60 NM.