Haicheng's climate is characterized by cold winters and mild springs. The city experiences a distinct seasonal pattern, with January being the coldest month, averaging around -5°C. As spring arrives in March, temperatures gradually warm up, ranging from 4 to 7°C on average, setting the stage for a relatively dry summer. Summer months are hot but not extremely so, with July and August averaging highs around 25-26°C. Autumn is mild, with temperatures dropping to around 10-15°C by November, marking the start of another cold winter.