April in Olympia averages a daily high of 14.9°C with nights around 2.8°C. Expect roughly 16.1 wet days totalling 87.6mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Olympia is July–August.
Based on OLYMPIA AIRPORT, WA US (7.9km), 1995–2024. 30 years of April data.