From Wikipedia: Hygge

The Danes do not traditionally consider themselves a “warm” culture or people, and generally consider themselves reserved. However, one of the fundemental aspects of Danish culture is “hygge”, which, although translated as “coziness” has no exact English equivelent. Hygge is a complete absence of anything annoying, irritating, or emotionally overwhelming, and the presence of and pleasure from comforting, gentle, and soothing things. Hygge is often associated with family and friends so close that they are understood as family. Christmas time with loving family indoors with candles lit on a cold raining night is “hygge”, as is grilling a pølse (Danish sausage) on a long summer evening. These are necessary examples which, although they do not precisely define “hygge”, can give an English speaker an idea of a deeply valued traditional concept of Danish culture.