The Bay Area is pulling a two-for-one weather special today: record-setting tides along the shoreline paired with a warm, sunny afternoon inland. Overnight high tides pushed water into low-lying bayside spots and set a summer-season record, while inland San Jose is expected to warm into the mid 80s by late day. It may feel cool and cloudy near the water this morning, but the real concerns are at the waterline, not in the hills, so beachgoers and bayside residents should pay attention.
Tides and Beach Hazards
The National Weather Service clocked a high tide of 7.81 feet MLLW at 11:18 PM yesterday, the highest summer-season water level recorded outside the winter storm season. Coastal Flood Advisories are posted for low-lying coastal and bayshore areas through Thursday morning. A long-period southerly swell is also driving an elevated risk of sneaker waves and strong rip currents at Pacific-facing beaches, so officials have extended a Beach Hazards Statement through Thursday morning as well.
Forecasts call for late-night high tides running about 1.7 to 1.8 feet above normal tomorrow and Wednesday. That increases the risk of saltwater splashing onto exposed roads, parks, and parking lots, according to the NWS in San Francisco.
Afternoon Heat Inland
Away from the shore, the marine layer should mix out and San Jose is on track for sunshine with highs near 86°F this afternoon and similar readings into midweek. Forecasters note a minor to isolated moderate heat risk for sensitive groups in parts of southern San Jose and some interior valleys, so this is a good day to drink plenty of water, avoid heavy exertion during the hottest hours, and check on neighbors who might struggle with the heat. Light north-northwest winds are expected, but they will not be strong enough to offset the daytime warming.
Where To Cool Off
If you do not have air conditioning, the county operates library locations and designated cooling centers during heat events, and the Office of Emergency Management posts an updated list of cooling centers along with safety tips for residents. Some transit agencies have offered rides to cooling centers during past advisories, but you should confirm details with your local operator before heading out. See Santa Clara County for cooling center locations and heat-safety guidance.
What To Watch Next
Hazardous beach conditions and the highest tides are expected to persist through Thursday morning, while temperatures trend back toward seasonal averages over the weekend. Move vehicles and valuables out of bayside low spots before late-night high tides, and if you are visiting Pacific beaches, keep a safe distance from the water and never turn your back on incoming waves. This forecast will be updated if advisories change.
