In August, Honolulu typically sees daytime highs of 28.8°C and overnight lows around 21.4°C. Compared to the annual average high of 26.8°C, August runs +2.0°C.
August in Honolulu averages a daytime high of 28.8°C and an overnight low of 21.4°C.
August runs +2.0°C compared to Honolulu's annual average high of 26.8°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 28.8°C and cooler evenings around 21.4°C.