Lausanne's winters are chilly and variable, with temperatures often dropping below freezing in January and February, but occasionally rising into the mid-teens. Spring arrives gradually, with March and April seeing a slow warming trend, while May brings more consistent mild temperatures. Summer is warm and sunny, with June and July averaging around 16°C, but August can be hot, with temperatures occasionally reaching over 30°C. Autumn sees a return to cooler temperatures, with October and November being particularly cool, while December's temperatures are often just as low as those in January.