Nakatsu, Japan experiences a temperate climate with distinct seasonal variations. Winters are quite chilly, with temperatures ranging from -8°C to 20°C in January and -4°C to 23°C in February, averaging around 5-8°C. As spring approaches, temperatures gradually rise, reaching an average of 12°C in March and 15°C in April, with occasional warmer days up to 24°C and 28°C respectively. Summer months are warm to hot, with July and August averaging highs around 27°C, while autumn brings a slight cool-down, with temperatures ranging from 7-23°C from October to November before dropping again in winter.