Historical weather data, all-time temperature records, and monthly climate averages for San Pedro, CA. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 4th in San Pedro is a mild, mostly dry kind of day — 94 years of data put the average high at 69° with only a 14% chance of rain. That said, the date has some range: a scorching 98° hit in 1989, and temperatures once bottomed out at 36° back in 1956.
San Pedro's weather is defined by its coastal moderation, but the extremes tell a different story. The all-time high of 108° on September 26, 1963 shows what offshore Santa Ana winds can do, while the record low of 24° in January 1937 remains a genuine outlier for a Southern California port town.
San Pedro is a year-round destination with remarkably little variation — monthly average highs range only from 65° in late December to 79° in late July. If you're chasing warmth, aim for late summer; if you want to avoid rain, skip late December, which is both the coolest and wettest stretch of the year.