Beihai's climate is characterized by a mild winter, with temperatures ranging from around 4-24°C in January and 5-27°C in December. Spring brings warmer days, with temperatures gradually increasing from 15-31°C in April to 22-34°C in May. Summer months are hot, but not extreme, with July being the warmest month at an average high of 35°C. Autumn is similar to spring, with a gradual decrease in temperature from September's average high of 37°C to October's 35°C. Winter temperatures return to mild levels by December, averaging around 16°C.