August in Fredericton averages a daily high of 25°C with nights around 13.6°C. Expect roughly 10.9 wet days totalling 90.5mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Fredericton is June–September.
Based on FREDERICTON CDA CS, NB CA (4.9km), 1995–2024. 24 years of August data.