About Irvine, CA's Climate & Weather History

With a population of around 257,000, Irvine sits in California, United States. The city operates in the Pacific Time Zone.

In 2025, Irvine recorded an average annual temperature of 63°F — about 2.0°F below the 30-year normal of 65°F. The hottest day reached 93°F in May; the coldest was 38°F in January. Total precipitation was 20 inches (wetter than usual). The wettest month was November.