According to the search results, the maximum weekly unemployment benefit in California in 2023 is $450. This amount is determined by dividing the total wages earned during the highest quarter in the base period by 26. The weekly benefit amount (WBA) ranges from $40 to $450. The maximum length of California unemployment benefits is 26 weeks. However, during periods of high unemployment or crises like the COVID-19 pandemic, additional weeks of benefits may be available.