Winters are brutal in Finland. The warmest month in the south of Finland, July, only gets between 55 and 63 degrees Fahrenheit, while the coldest, February, averages between minus 7 and 26 degrees Fahrenheit. The north has two-month-long sunless winters, while the south sees only around six hours of daylight.
It’s the type of weather that will make you seriously consider staying inside rather than going out with your friends, social distancing guidelines or not. So perhaps it’s not surprising that staying home in the comfort of your underwear is a cultural tradition in Finland. It’s called kalsarikännit, which essentially translates to, “The feeling when you are going to get drunk home alone in your underwear — with no intention of going out.”