Saturday, August 15, 2026 falls right in the middle of the holidays, and the urge to stroll through shops is tempting you? Before you grab your tote bag and head into town, it’s worth checking the hours: a public holiday means some stores could be shuttered. Here’s the rundown of what will be (or won’t be) open in Paris and Île-de-France, for a shopping trip with no unpleasant surprises.