August in St. Petersburg averages a daily high of 32.3°C with nights around 26°C. Expect roughly 16.5 wet days totalling 213.3mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit St. Petersburg is November–April.
Based on ST PETERSBURG ALBERT WHITTED AIRPORT, FL US (5.3km), 1995–2024. 27 years of August data.