WPGlobus with the WooCommerce Extension can switch the interface language of your WooCommerce website on-the-fly.

Your Store’s products, categories, and tags will become multilingual, and you will be able to translate them into one or more additional languages.

However, you need to “trick” WooCommerce into installing its language translations first. Otherwise, all the WooCommerce messages and buttons will remain in English.

Here is how. See the slideshow below or open the PDF version.