Nishio, Japan's climate is characterized by mild winters and hot, humid summers. January and February are the coldest months, with temperatures ranging from around 0°C to mid-teens, while March marks a gradual warming trend, with temperatures increasing to highs of up to 24°C. Spring brings rapid temperature rises, with April and May averaging high temperatures in the late 20s and early 30s. Summer is hot and humid, with July and August often reaching highs above 35°C, but September brings a welcome cooling trend, before autumn's mild temperatures return by October. Winter returns in November, with temperatures dropping back to around freezing by December.