Hot wave and Hot spell

Hot spell and hot wave are semantically related in dog days topic. In some cases you can use "Hot spell" instead a noun phrase "Hot wave", when it comes to topics like warm air moving in.

Hot spell noun - A spell of hot weather.

Hot wave and hot spell are semantically related in dog days topic. You can use "Hot wave" instead a noun phrase "Hot spell", if it concerns topics such as warm air moving in.