January in Santa Cruz averages a daily high of 16.3°C with nights around 5.5°C. Expect roughly 11 wet days totalling 170.5mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Santa Cruz is May–October.
Based on SANTA CRUZ, CA US (3.2km), 1995–2024. 26 years of January data.