The 2nd Ruisdael Science Day was held on the 19th of June 2019 at KNMI. This yearly event aims at bringing together scientists who work within the framework of the Ruisdael project or related science project. In this way we hope to stimulate cooperation between the various disciplines that are represented within Ruisdael. Instrumentalists, data analysts and modellers were encouraged to present their work. The programme of the Ruisdael Science Day 2019 is listed below. Links to presentations and posters will follow soon. More than 60 scientists, PhD students and post-docs of the affiliated institutes attended the second Ruisdael Science day.