… Delta residents love to share their experiences with this summertime weather phenomenon, in all its complexities, and how it affects their daily activities and even their life choices. “The Delta Breeze is a real thing,” says Iva Walton, Isleton’s mayor. The breeze originates in the Pacific Ocean, more than 50 miles away, and meteorologists and atmospheric scientists say it can bring a few degrees of relief on hot days to the millions of people who live, work and play in the Delta, a region that extends from Vallejo to Sacramento and Stockton. … As inland temperatures rise, the currents push in through two major openings in the coastal range: the Golden Gate and the Petaluma Gap, lowlands that run between Bodega and Tamales bays and Petaluma. From San Francisco and San Pablo bays, the cool air travels up through the Carquinez Strait, usually arriving in the Delta in the late afternoon.