Nakai, Japan experiences a temperate climate with distinct seasonal variations. Winters are cool and relatively mild, with temperatures ranging from just below freezing to around 18°C in January and February. As spring arrives in March, temperatures gradually warm up to average highs of 14°C, followed by a rapid increase to summer's sweltering heat, where temperatures often soar above 30°C from June to August. Autumn brings welcome relief with milder temperatures, averaging around 20°C in October, before cooling down again in November and December, returning to winter's chill.