It is low season for festivals during this time of year. Some websites that you can check out regularly for updates on photography festivals and events are:
Photography Now is an international online platform for Photography and Art in different languages.
Festival of Light is a collaboration of over 20 international photography festivals. The website includes links to all of them.
This article by Simon Bainbridge describes some of the most well-known festivals in the world and is an interesting read.
World Press Photo’s website lists a number of links to festivals in the world, as well as links to museums and galleries.