The central and southern coast consists mainly of a subtropical desert climate composed of sandy or rocky shores and inland cutting valleys. Days alternate between overcast skies with occasional fog in the winter and sunny skies with occasional haze in the summer, with the only precipitation being an occasional light-to-moderate drizzle that is known locally as "garúa". These regions are usually characterized by mildly cold lows () and also mild highs (). Temperatures rarely fall below and do not go over . An exception is the southern coast, where it does get a bit warmer and drier for most of the year during daytime, and where it can also get much colder during winter nights ().