Honjo's winters are cold, with temperatures often below freezing in January and December, but February is slightly milder. As spring approaches, March brings warmer days, while April and May see a steady rise in temperature, with average highs reaching up to 26°C and 31°C respectively. Summer is hot and humid, with July and August being the warmest months, although September's temperatures drop back down. Autumn sees a return to more moderate conditions, with October's temperatures mirroring those of February.