Croatia knows sub-zero temperatures in winter, which causes the waterfalls of Plitvice to (partially) freeze. It may also snow, which creates wonderful scenes, have a look at the photos below.
Have a look here what Plitvice looks like the rest of the year, in spring, summer and autumn.
The park is pretty much accessible the entire winter, so you can go and admire the phenomenon. Do keep in mind that the amenities are less in winter. Have a look at the footage below showing the park in the snow:
It’s a good idea to check the website before you go, to get updates on the latest weather conditions and information. The nearest airport is in Zadar, around 130 km away.
More information: www.np-plitvicka-jezera.hr