Why Are Japanese People So Sensitive to Seasons? The Culture of Koromogae and Seasonal Awareness

🏮 Introduction

In Japan, the end of May marks the start of a cultural tradition called koromogae — the seasonal changing of clothes. At schools and workplaces, uniforms are switched from winter to summer versions around June 1st. But koromogae isn’t just about staying cool — it's a reflection of Japan’s deep sensitivity to seasonal change.
So why are Japanese people so in tune with the seasons? And how is this different from other countries?

👘 What Is Koromogae?

Koromogae (衣替え) literally means “changing clothes.” It’s a long-standing tradition where people switch their wardrobes on set dates — typically June 1st and October 1st. In schools and some companies, everyone switches uniforms together. At home, people put away winter coats and bring out summer clothes. It’s almost like a seasonal ritual.

🌸 Japan’s Four Distinct Seasons

Japan is known for its clear four seasons — spring, summer, autumn, and winter — but it’s more than just temperature. Each season brings unique events: cherry blossoms in spring, rainy season in early summer, vibrant leaves in autumn, and snow in winter.
Because of this, many aspects of daily life — food, clothing, decor — are closely tied to the rhythm of the seasons.

🌍 Seasonal Culture Around the World

In many Western countries, people change what they wear based on the weather, but there’s no specific “switch day” like koromogae. Clothing transitions tend to be more gradual and based on individual choice.
Seasonal awareness often centers around events (like Halloween or Christmas), rather than natural transitions. In contrast, Japan’s seasonal sensitivity is rooted in nature and tradition.

🧘 A Life in Tune with Nature

In Japan, seasonality touches everything: food (like seasonal fruits and fish), dishes and tableware, poetry (haiku with seasonal words), even product packaging.
This cultural focus on “living with the seasons” is seen as beautiful and thoughtful — and it influences everything from daily life to hospitality.