textproduct: San Francisco Bay Area

KEY MESSAGES

Updated at 1201 AM PDT Sun May 31 2026

- Long period southwest swell will result in an increased risk of sneaker waves and rip currents through Tuesday morning

- Today's temperatures will be near or slightly above normal

- Monday will be the warmest day of the week

- Slightly cooler temperatures for the end of the work week into next weekend

SHORT TERM

Issued at 1005 PM PDT Sat May 30 2026 (Today and tonight)

Weak ridging stalls offshore for most of today before amplifying somewhat to our north tonight, setting the stage for a brief jump in temperatures on Monday. Before that, we will see a notable increase of around 5 degrees from Saturdays highs. Interior locations in the North Bay Valleys, South Bay, East Bay Hills and Salinas Valley south of Soledad have the best chance (60%-100%) of reaching 80 degrees, with the remainder of the interior away from coastal influences in the 70s, and 60s for coastal areas. Marine layer will struggle to make much progress beyond the immediate coast into the beginning of the week.

LONG TERM

Issued at 1005 PM PDT Sat May 30 2026 (Monday through Saturday)

Expect another jump around 5-10 degrees on Monday across the interior with another day of relatively unimpressive amplification of the ridge and weak, unorganized jet stream flow at H30. Split upper flow regime through the middle of the week will keep temperatures similar Tuesday through Thursday. The potential cool down expected for the end of the week into next weekend continues to evolve with deterministic guidance now backing off the deeper troughing advertised the past couple of days. The net result would be closer to normal temperatures, and more pleasant weather and dry conditions through the extended forecast.

AVIATION

(06Z TAFS) Issued at 929 PM PDT Sat May 30 2026

A mix of clear skies and coastal stratus tonight. HAF, MRY, SNS, SFO, and OAK are the ones to watch, listed in order of decreasing probabilities. Moderate onshore winds will decrease overnight before returning Sunday afternoon.

Vicinity of SFO...The terminal remains VFR, although a patch of stratus is developing over the Peninsula. The strong onshore winds are gradually decreasing, but held on longer than I thought they would. The probability for ceilings Sunday morning is around 40%, but the window is short enough to capture in a TEMPO group. The afternoon will almost certainly be clear as the onshore winds return.

SFO Bridge Approach...Similar to SFO.

Monterey Bay Terminals...MRY just developed a ceiling out of nowhere. I expected that to happen tonight, but not this early. I'm not sure that this first cloud will survive the night, so I'm keeping the first few hours of the TAF VFR for now.

MARINE

(Tonight through next Friday) Issued at 929 PM PDT Sat May 30 2026

High end small craft advisories are in effect, with buoys reporting occasional gusts to gale force. A fresh northerly breeze will continue through Sunday. Seas will build in response and become rough leading to hazardous conditions over the coastal waters through Sunday and into Monday morning.

BEACHES

Issued at 1201 AM PDT Sun May 31 2026

A Beach Hazards Statement will come into effect at 5 AM today through Tuesday morning due to an increased risk of sneaker waves and rip currents. Long period southwest swell is approaching the Pacific coast, with periods of 18 to 20 seconds and a height of around 2 feet in the open waters. These long period swells result in increased risk of sneaker waves, potentially deadly waves which surge much further up the beach than expected and sweep unaware beachgoers into the ocean, and strong rip currents that can sweep the strongest swimmers away from shore. Never turn your back to the ocean! Inexperienced swimmers should stay from the water. Observe the waves for 20 minutes before moving closer. Swim near a lifeguard if possible, and if caught in a rip current, swim parallel to the coast away from the current, and then at an angle to shore.

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MTR WATCHES/WARNINGS/ADVISORIES

CA...Beach Hazards Statement from 5 AM PDT early this morning through late Monday night for CAZ006-505-509-529-530.

PZ...Small Craft Advisory until 3 AM PDT Monday for Pigeon Pt to Pt Pinos 10-60 NM-Pt Arena to Pt Reyes 0-10 nm-Pt Pinos to Pt Piedras Blancas 0-10 nm.

Small Craft Advisory until 3 AM PDT early this morning for Pigeon Pt to Pt Pinos 0-10 nm-Pt Reyes to Pigeon Pt 0-10 nm.

Small Craft Advisory until 9 AM PDT Monday for Pt Arena to Pt Reyes 10-60 NM.