In April, San Diego typically sees daytime highs of 20.2°C and overnight lows around 10.5°C. Compared to the annual average high of 22.1°C, April runs -1.9°C.
April in San Diego averages a daytime high of 20.2°C and an overnight low of 10.5°C.
April runs -1.9°C compared to San Diego's annual average high of 22.1°C, ranking #8 of 12 months by warmth.
Plan for daytime highs near 20.2°C and cooler evenings around 10.5°C.