In March, San Diego typically sees daytime highs of 19.1°C and overnight lows around 9.2°C. Compared to the annual average high of 22.1°C, March runs -3.0°C.
March in San Diego averages a daytime high of 19.1°C and an overnight low of 9.2°C.
March runs -3.0°C compared to San Diego's annual average high of 22.1°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 19.1°C and cooler evenings around 9.2°C.