Despite it still technically being the tail end of summer, residents and visitors of Tokyo are feeling a hint of early fall, with temperatures chilly enough to make short sleeves uncomfortable on September 21. The substantial drop in temperature, especially in the capital's bustling city center, marks a definitive transition into the fall season. People are advised to suitably adjust their attire to stay warm.

In Japan, the harmony of seasons is an essential part of life and is deeply ingrained in their culture, which is evident in everything from cuisine to fashion. The change in weather not only signals a change in wardrobe but also in foods and festivities that people look forward to. In particular, cool weather usually invites hot pot dishes and anticipation for viewing autumn leaves, a popular activity in Japan.

In the US or EU, seasonal changes are similarly regarded with anticipation, especially with the shift from summer to fall. In terms of fashion, the transition brings forth autumnal palettes and warmer clothing. For food, recipes tend to shift towards warm comfort foods and seasonal treats like pumpkin spiced drinks. However, due to geographical differences, the degree of changes in temperature varies greatly across different states and countries.