Jiaozhou experiences cold winters with temperatures often below freezing, averaging around 0°C in January and dipping as low as -17°C. As spring approaches, temperatures gradually rise, reaching an average of 9°C by March and 13°C by April. Summer brings warm days, with June and July averages hovering around 26°C, though occasional heatwaves can push temperatures above 35°C. Autumn is generally mild, with September averaging around 23°C before temperatures drop again in November, mirroring the winter chill of December.