Charleston's weather is characterized by mild winters, with temperatures often hovering around freezing but occasionally dipping into single digits Celsius. Spring brings rapid warming, with March and April temperatures rising significantly above winter averages. Summer months are hot and humid, with highs consistently reaching the mid-30s Celsius from June to August. Autumn is similar to spring in terms of temperature fluctuations, but generally cooler overall. Winters are the coolest season, with temperatures often below 0C, but still relatively mild compared to colder parts of the United States.