March in Santa Monica averages a daily high of 19.2°C with nights around 10.6°C. Expect roughly 5.4 wet days totalling 51mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Santa Monica is April–November.
Based on SANTA MONICA MUNICIPAL AIRPORT, CA US (4.1km), 1995–2024. 24 years of March data.