In August, Westminster typically sees daytime highs of 29.1°C and overnight lows around 12.0°C. Compared to the annual average high of 17.8°C, August runs +11.3°C.
August in Westminster averages a daytime high of 29.1°C and an overnight low of 12.0°C.
August runs +11.3°C compared to Westminster's annual average high of 17.8°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 29.1°C and cooler evenings around 12.0°C.