In August, St. Petersburg typically sees daytime highs of 31.7°C and overnight lows around 24.0°C. Compared to the annual average high of 26.6°C, August runs +5.1°C.
August in St. Petersburg averages a daytime high of 31.7°C and an overnight low of 24.0°C.
August runs +5.1°C compared to St. Petersburg's annual average high of 26.6°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 31.7°C and cooler evenings around 24.0°C.