Time in San Mateo, United States

Time zone: PDT (UTC/GMT -07:00) — America/Los_Angeles

San Mateo runs on PDT. That places it 7 hours behind UTC (UTC-07:00); in a calendar, server config or booking form, select America/Los_Angeles.

San Mateo observes daylight saving. The next change lands on Sunday, 01 November 2026, when 1 hour is added or removed and the abbreviation becomes PST.

Bear in mind United States spans 10 zones across the 419 cities we cover — checking a second city in the same country is often necessary.

San Mateo has roughly 103,536 residents and ranks 202nd by population among the United States cities on this site.

Read this as: relative to each city below, San Mateo is the stated amount ahead or behind, right now.

Overlap of a normal working day, shown in San Mateo time — outside these windows one side is off the clock.

No shared working window exists with London, Paris, Dubai or Mumbai, so those calls have to sit outside somebody's normal hours.

These United States cities also use America/Los_Angeles, so their clocks read identically to San Mateo at every moment of the year.

Los Angeles San Jose San Francisco San Francisco Seattle Las Vegas Sacramento Bakersfield