It depends. Most of Oregon’s larger wineries are open year-round. Some of the medium-sized wineries close for certain days throughout the year. Many of the smaller wineries may be closed during December through January, for anywhere from a week to a month at a time.
If you are planning on visiting Oregon wineries, call ahead and make sure the winery will be open, and ready for your visit. There is nothing worse than taking a beautiful drive through Oregon’s countryside, only to arrive at a winery with no lights on.