Synonyms for the term "tropical heats" include phrases such as scorching temperatures, blazing sun, fiery weather, and sweltering conditions. Additionally, variations of tropical, such as equatorial, subtropical, or humid, can be used to convey similar meanings. Other possible alternatives include torrid, sultry, oppressive, and baking, which allude to the intense, uncomfortable nature of such climates. In formal writing or scientific contexts, terms like high-pressure systems, thermals, or heatwaves may be more appropriate. Ultimately, the choice of synonym will depend on the tone and style of the piece, as well as the specific connotations or implications desired.