In August, Jacksonville typically sees daytime highs of 31.0°C and overnight lows around 20.5°C. Compared to the annual average high of 22.6°C, August runs +8.4°C.
August in Jacksonville averages a daytime high of 31.0°C and an overnight low of 20.5°C.
August runs +8.4°C compared to Jacksonville's annual average high of 22.6°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 31.0°C and cooler evenings around 20.5°C.