Winters in Leeuwarden are chilly and mild, with temperatures rarely dropping below freezing. The coldest months are January and December, with average temperatures around 4°C, but temperatures can fluctuate between -5°C and 11°C/12°C. As spring arrives, temperatures gradually rise, reaching averages of 6°C in March and 7°C in April. Summer brings warm days, with July and August often seeing highs above 20°C, while autumn is characterized by moderate temperatures, dipping back into the single digits in October.