Jian'ou experiences a subtropical monsoon climate with distinct seasonal variations. Spring, from March to May, brings mild temperatures ranging from 15°C to 28°C, with April being the warmest month. Summer, from June to August, is hot and humid, with temperatures often reaching above 30°C. Autumn, from September to November, is characterized by comfortable temperatures between 10°C and 25°C, with October being the coolest month. Winter, from December to February, is cool and dry, with temperatures fluctuating between 2°C and 12°C.