Fireworks are one of Japan’s summer traditions, but fireworks are held all over the country in winter too. It is said that the fireworks that blow up in the cold, clearing atmosphere look more beautiful than in summer. That is, Warm air in summer is prone to refraction of light, making distant scenes difficult to see or distort, whereas cold air in winter is less prone to refraction.

花火と言えば夏の風物詩のひとつですが、最近は冬場にも、北は北海道から沖縄まで数十の冬花火が開催されています。冬花火は大気の関係で夏花火より綺麗だと言われています。しかし、今年はコロナウィルスの影響で観客はどことも少なく、寂しい冬花火になりそうです。