In August, Dartmouth typically sees daytime highs of 22.0°C and overnight lows around 13.1°C. Compared to the annual average high of 10.5°C, August runs +11.4°C.
August in Dartmouth averages a daytime high of 22.0°C and an overnight low of 13.1°C.
August runs +11.4°C compared to Dartmouth's annual average high of 10.5°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 22.0°C and cooler evenings around 13.1°C.