In October, San Diego typically sees daytime highs of 24.3°C and overnight lows around 13.3°C. Compared to the annual average high of 22.1°C, October runs +2.2°C.
October in San Diego averages a daytime high of 24.3°C and an overnight low of 13.3°C.
October runs +2.2°C compared to San Diego's annual average high of 22.1°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 24.3°C and cooler evenings around 13.3°C.