Weather Calendar September 2026 San Diego Ca Innovative Outstanding Superior. High/low temperatures, water temperature, snow averages, hours of sun and things to do for a perfect vacation! Explore san diego's weather trends by month, including average temperatures, rainfall, and sunshine hours.

Get the full san diego september weather outlook: Explore san diego's weather trends by month, including average temperatures, rainfall, and sunshine hours. High/low temperatures, water temperature, snow averages, hours of sun and things to do for a perfect vacation!






