August in Kingston averages a daily high of 25.8°C with nights around 14.6°C. Expect roughly 10.9 wet days totalling 84.7mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Kingston is May–September.
Based on HARTINGTON IHD, ON CA (27.8km), 1995–2024. 28 years of August data.