San Francisco started today under a cool, gray blanket, with waterfront temperatures stuck in the mid-50s and a shallow marine layer clinging to the coast. Inland neighborhoods will shake off the chill and warm up through the week, but anyone eyeing a beach day should know the ocean is the main troublemaker right now.
Beach Hazards and Safety
A long-period southerly swell is cranking up the risk of sneaker waves and strong rip currents along Pacific-facing beaches, increasing the odds of dangerous swimming conditions and some localized erosion. Officials are urging people to stay off jetties, piers and slick coastal rocks, and to enjoy the show from higher, safer ground. Sneaker waves can sweep across the shoreline without warning, and this Beach Hazards Statement is in effect through Wednesday afternoon, according to NWS San Francisco.
Afternoon Winds Pick Up
Coastal areas will see low clouds and patchy fog through the morning, with inland spots clearing by late morning and a city high near 67°F. West-southwest winds should run about 5 to 13 mph with gusts up to around 20 mph, and the strongest gusts of roughly 15 to 30 mph are expected in coastal gaps and passes, so plan on a blustery walk if you are headed for the waterfront.
Midweek Warmth Inland
An upper-level ridge building over the region will compress the marine layer and drive inland temperatures up through midweek, with interior highs in the 80s and some locations possibly nearing 90°F. That could mean pockets of Moderate HeatRisk for more vulnerable residents. If you do not have air conditioning, the city maintains designated cooling centers at select libraries during heat events, according to the San Francisco Public Library.
Plan Ahead
If a coastal escape is on your agenda in the next few days, build in extra time, watch the surf from a safe overlook and keep kids and pets well back from the waterline. For the latest word on surf, tide and marine advisories, stick with local NWS updates and follow any lifeguard directions or posted park closures.
