April in Whitby averages a daily high of 10.7°C with nights around 2.1°C. Expect roughly 11 wet days totalling 81mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Whitby is June–September.
Based on OSHAWA WPCP, ON CA (8.2km), 1995–2024. 23 years of April data.