March in Burien averages a daily high of 11.6°C with nights around 4.1°C. Expect roughly 17.4 wet days totalling 102.9mm. Demanding conditions — pack for it and plan indoor options.
Across the year, the best time to visit Burien is July–August.
Based on SEATTLE TACOMA AIRPORT, WA US (3.8km), 1995–2024. 30 years of March data.