Shikokuchuo's winters are chilly, with temperatures often below freezing in January and February, but milder periods bring temperatures up to around 18°C and 21°C respectively. As spring approaches, temperatures gradually warm up, reaching averages of 13°C in March and 16°C in April. Summer is hot and humid, with July and August seeing highs above 36°C, while autumn brings a return to more moderate conditions, with temperatures similar to those in spring. In the winter months, November's temperature range is similar to that of March, indicating a mild start to the season before temperatures drop again in December.