The hourly rate for a plumber in Southern California can vary widely depending on a number of factors, including the plumber’s level of experience, the complexity of the job, and the location of the job. According to data from HomeAdvisor, the average hourly rate for a plumber in Southern California is $80-$90 per hour. However, it is important to note that this is just an average and some plumbers may charge more or less depending on the specific circumstances of the job. It is always a good idea to get quotes from multiple plumbers to get a sense of the going rate for the work you need done.