Caniculas is a Latin word meaning dog days, the hottest and most oppressive period of the summer season. Some synonyms for caniculas are sweltering heat, scorching temperatures, sultry weather, oppressive climate, and intense heat. Other words that can be used as synonyms for caniculas include torrid weather, blistering heat, fiery temperatures, and baking hot weather. All of these words suggest a period of time when the weather is almost unbearable and everyone longs for cooler temperatures. Regardless of the word you choose to use, the message is the same; caniculas is a time when one must do everything possible to stay cool and hydrated.