April in Watsonville averages a daily high of 19.5°C with nights around 7.5°C. Expect roughly 6.4 wet days totalling 43.1mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Watsonville is May–October.
Based on WATSONVILLE WATERWORKS, CA US (2.5km), 1995–2024. 29 years of April data.