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

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

(12Z TAFS) Issued at 420 AM PDT Sun May 31 2026

Patches of MVFR-IFR stratus have developed on the western side of the San Mateo Peninsula and within the southern Monterey Bay region, the rest of the region remains VFR with low confidence of further stratus development through the morning. Stratus should mix out through the morning as breezy onshore winds develop in the afternoon and evening hours. Overnight into Monday morning, MVFR-IFR stratus returns to coastal regions south of Point Reyes, with a particular emphasis on the western San Mateo Peninsula and Monterey Bay, with low probabilities of inland stratus development focused on the immediate SF and San Pablo Bays.

Vicinity of SFO... Clear conditions at present. With high resolution models moving away from stratus coverage tonight, considered removing the TEMPO groups for MVFR stratus at SFO and OAK. However, the possibility of radiative stratus development is holding me back at this time. Might remove the groups after sunrise. Breezy west- northwest winds develop in the afternoon and evening hours, diminishing overnight as low probabilities of stratus coverage return to the terminal area.

SFO Bridge Approach... Similar to SFO.

Monterey Bay Terminals... IFR conditions at the terminal area through the morning hours, with breezy northwest winds developing in the afternoon before diminishing near sunset. IFR stratus returns to the terminal area late tonight into the early parts of Monday morning.

MARINE

(Today through Friday) Issued at 420 AM PDT Sun May 31 2026

High end small craft advisories continue through early Monday morning, with buoys reporting rough seas and occasional gale force gusts. A fresh northerly breeze will continue through the day, with a slight diminishment later on Monday and Tuesday before returning for the middle and later parts of the week.

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 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 9 AM PDT Monday for Pt Arena to Pt Reyes 10-60 NM.