Aisai, Japan experiences a temperate climate with distinct seasonal variations. Winters are cool and occasionally chilly, with temperatures often dipping below freezing in January and February, but averaging around 5-7°C overall. Spring arrives in March, bringing warmer temperatures that gradually increase throughout the month, eventually reaching averages of 15°C by April. Summer months from June to August are warm to hot, with temperatures frequently surpassing 30°C, especially in July and August when they average 27°C. As autumn approaches, temperatures begin to cool again, returning to averages around 13-20°C by November, before the cycle starts anew in winter.