Winters in Jeonghae are harsh, with temperatures often below freezing and averaging near 0°C, while springs bring a gradual warming trend. As the seasons shift into summer, temperatures skyrocket, peaking at 38°C in July, but begin to recede in autumn, returning to average highs around 16°C by October. Autumn weather is quite pleasant, with mild temperatures, before cooling again into winter. Summer months are hot and humid, while winters are cold and snowy.