The flooding came during the city’s highest October tide on record. The tide reached 1.87 feet above a typical high tide, surpassing an October record set just two weeks earlier. Port of San Francisco workers placed cones around water pooling along the roadway.

High tides were expected to rise further Tuesday and Wednesday. Wednesday’s high tide could reach 2.1 feet above normal, according to the forecast cited Monday. King tides during the weeks of Thanksgiving and Christmas are expected to be higher still; if heavy rain or a storm arrives at the same time, flooding could cause more serious disruption.

Monday’s flooding was unusual for a sunny day. There were no major waves or strong winds pushing water over the shoreline and onto nearby streets. Similar conditions are more familiar when king tides coincide with winter storms, when waves and rain can compound coastal flooding.

El Niño is warming California’s coastal waters and contributing to sea levels more than a foot above levels projected in annual tide charts, the report said. Along California’s coast, sea levels have risen about 8 inches over the past century as glaciers and ice sheets melt and warming ocean water expands. Future increases will depend in part on how quickly the world cuts emissions from fossil fuels.

The high tides were affecting other parts of the state, too. Caltrans closed an onramp to Highway 101 in Mill Valley on Monday, while flooding also closed roads elsewhere in the area. Southern California communities reported coastal flooding, and a section of Pacific Coast Highway in Huntington Beach was closed.