A cold occurring in the hot season; often caused by exposure to air conditioning or cold foods/drinks, and may involve sore throat or diarrhea.
冷房の効きすぎで夏風邪をひいてしまった。
I caught a summer cold from the air conditioning being too strong.
夏風邪は軽く見がちだが、長引くこともあるので注意が必要だ。
Summer colds are often taken lightly, but they can linger, so caution is needed.
冷たい飲み物を一気に飲むと夏風邪を引くことがある。
Drinking cold beverages too quickly can sometimes cause a summer cold.