San Jose started today on a mild note, with clear skies and temperatures hovering near 55°F at San Jose Mineta Airport. That cool, calm vibe will not last long inland, though, as much of the Santa Clara Valley is expected to push into the upper 80s this afternoon, while the immediate coast holds onto far cooler air.
Afternoon Heat Inland, Cool Coast
Forecasters are calling for South Bay highs near 87°F this afternoon, with the warmest inland locations climbing into the 80s and even low 90s. Closer to the ocean, highs should stay in the upper 60s to mid-70s. The National Weather Service expects temperatures to dip a few degrees late in the day as onshore flow strengthens and cooler marine air pushes inland.
Afternoon Winds Pick Up
That onshore push will show up as wind. Breezes will build through the afternoon and evening, especially along the coast and in coastal canyons. Coastal headlands and airport approaches could see gusts around 35–40 mph, while inland winds stay lighter but still noticeable for cyclists and anyone out on exposed hills. After sunset, look for breezier nights as north-northwest winds settle in.
Beach And Marine Hazards
A Beach Hazards Statement is in effect through Saturday morning for Pacific Coast beaches, thanks to a long-period southwesterly swell that is ramping up the risk of sneaker waves and strong rip currents. The National Weather Service also notes small craft advisories and gale-force gusts in the outer waters through the weekend, so boaters and shoreline visitors are urged to stay off jetties and wet rocks. Dangerous surf could cause localized beach erosion and sudden shoreward surges, so the usual coastal rule applies: never turn your back on the ocean.
Weekend Outlook
A cooler pattern slides in for the weekend as a trough ushers in milder air. Highs drop into the mid-70s tomorrow and rebound to around 80 on Sunday, with overnight lows settling into the upper 40s to low 50s. There is a slight chance of light rain from next Monday evening into Tuesday, though any showers at this point look to be light and spotty.
How To Plan
If you are heading inland, plan for warm sunshine, plenty of water, and sunscreen. Near the coast, keep a windbreaker handy for those afternoon gusts. Beach trips and boating plans should start with a check of local surf and tide forecasts, and it is worth heeding lifeguards and marine advisories before you head out.
