San Jose started today under a cool gray blanket, with temperatures hovering near 60°F at Mineta San Jose International Airport. A shallow marine layer will cling to the coast through the morning, but inland neighborhoods will break into afternoon sun and climb into the low 80s as a warming trend ramps up into midweek. The main takeaways: hot afternoons away from the water and dangerous surf along Pacific-facing beaches.
Afternoon Heat Cranks Up Inland
Inland highs are on a steady climb, with temperatures around 83°F today, near 86°F tomorrow, and peaking close to 87°F on Wednesday, while coastal spots stay in the 60s. Light to moderate afternoon breezes should take a bit of the edge off, but a pocket of moderate heat risk is possible in the Santa Clara Valley, including parts of San Jose tomorrow and Wednesday, according to the National Weather Service.
Beach Hazards And Sneaker Waves
A long-period southerly swell keeps a Beach Hazards Statement in place through Wednesday, bringing strong rip currents and the threat of sneaker waves that can surge far up the sand. That sneaker wave threat we flagged last week is still very much in play, especially along south- and southwest-facing shores. Stay well back from the waterline and skip jetties, piers and rocky outcrops if you are heading to the coast.
Plan For Heat And Ocean Safety
If you do not have reliable air conditioning, consider spending the hottest part of the afternoon at a cooling center or public library; the Santa Clara County OEM lists local hot-weather resources. For any beach outing, swim only at lifeguarded locations and never turn your back on the surf. Bring plenty of water, avoid strenuous outdoor work in the afternoon, and move vehicles out of low-lying bayside areas before high tide if you live near the shoreline.
What Comes Next
The current beach hazards and inland warming trend are expected to hold through midweek. A cooling pattern with stronger onshore winds should develop on Friday into Saturday as an upper-level trough moves in. Mariners should keep an eye on long-period southwest swell and gusty winds over exposed ridges later in the week. For the latest detailed forecast and any updated advisories, check the National Weather Service.
