Helsinki - Five-Day Weather ForecastHelsinki ClimateIn Helsinki the summers are warm; expect temperatures between 4 and 20 degrees Celsius (39 and 68 degrees Fahrenheit). Winter temperatures are cold and range between -4 and -8 degrees Celsius (24 and 46 degrees Fahrenheit). Summer nights are short and never really dark and in mid-winter the daylight only lasts for a few hours.
Helsinki Climate Chart
