Suzhou's winters are chilly, with temperatures often below freezing in January and February, but slowly warming up by March. Spring brings rapid growth and increasing warmth, with April and May seeing temperatures rise significantly. Summer is hot and humid, with July and August being the warmest months, while September marks a slight cooling trend. Autumn is mild, with October experiencing a brief chill before November's cooler temperatures return. Frosts are common in December, signaling the onset of winter once again.