July in Vlaardingen averages a daily high of 22.6°C with nights around 13.4°C. Expect roughly 13.7 wet days totalling 79.3mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Vlaardingen is May–September.
Based on ROTTERDAM, NL (9km), 1995–2024. 30 years of July data.