In August, San Clemente typically sees daytime highs of 26.4°C and overnight lows around 17.0°C. Compared to the annual average high of 22.2°C, August runs +4.2°C.
August in San Clemente averages a daytime high of 26.4°C and an overnight low of 17.0°C.
August runs +4.2°C compared to San Clemente's annual average high of 22.2°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 26.4°C and cooler evenings around 17.0°C.