October in Santa Monica averages a daily high of 23.4°C with nights around 14.7°C. Expect roughly 3.3 wet days totalling 13.2mm. 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. 25 years of October data.