A pile of snow in Pohjois-Tapiola, Espoo, near the Barona Areena sports venue, in early May. Although cool to mild temperatures in May are somewhat common in southern Finland, it's extremely rare to see any snow at that time of the year. This might be a special case, because the ice rink at the Barona Areena is kept frozen throughout the year, and the cold temperatures radiating from there might cause minor amounts of snow to form outside even in May.