Difícil cuestión. En el contexto del tiempo meteorológico, lo más común, como apunta Viviane, es decir "hace calor", simplemente. "Hoy hace calor" puede, por lo tanto, equivaler a "today it's warm". But a simple gesture with your hand, (using it as if it was a fan) may change the sense of that "hoy hace calor" into "today it's quite hot". If you want to make it clearer, you should add something like, mucho, bastante, and it means it's unpleasant: "Buf! Hoy hace mucho calor". You could also say (for "it's warm") "hoy está templado" (that would be much clearer, but it's not a common expression, though, at least in Spain. In countries like Chile, they use the expression "está tibio/tibiecito", which means "it's warm". This expression is not used in Spain (as far as I know). Unlike Viviana's opinion, I don't think "hace buen tiempo" to be a good translation for "it's warm", because it can be warm and cloudy or warm and wet, for example, and in that case, we wouldn't say "hace buen tiempo", which means "the weather is nice".

Hi, Im from Bolivia and in my country we use the expretion "(el clima) esta templado" that would be the best translation for "it´s warm". Its not that common to hear this in a casual conversation but you´ll always here this expression on the weather forecasts on TV "hoy tendremos un clima templado". In a casual conversation we prefer to use "(el clima) esta agradable" or something like that because you know, a warm weather is usually the best weather we can have.

You could just say "Hace buen tiempo", for "The weather is good". In Spanish, "Hace calor" is usually a good thing and doesn't mean that it's too hot and uncomfortable, so you could say that as well. "Hace demasiado calor" would be a complaint, though.

En México todo depende de la temperatura y de la sensación térmica Fresco, baja temperatura sin necesidad de abrigo it's like the winter feel in Florida Frio, Baja temperatura con necesidad de abrigo it's like the winter feel in Chicago Hot Calor con alta humedad o alta temperatura between 35 to 50 celsius "Que calor hace" it's like the summer feel in Arizona Warm Calor sin sudor o con baja temperatura above 25 until 35 celsius "está agrable el clima sin sensacion de frio ni sensación de calor" it's like the summer feel in Los Angeles In Mexico Hot mean Caluroso In México warm meanTemplado

"warm" con respecto al clima es calido, tibio, agradable