Definition of hot by Dictionary.com:

having or giving off heat; having a high temperature:

Definition of warm by Dictionary.com:

of or at a moderately high temperature; characterized by comparatively high temperature:

Many people argue that you it is wrong to say "I am (feeling) hot" and argues that "hot" refers to temperature 40℃ and above while "warm" refers to temperature 30-40℃.

I personally feel silly to say "I am (feeling) warm" because it is the fact that you have been warm all the time (unless the temperature just rose to 30℃ or dropped to 40℃).

I have tried to search about this but to no avail. Although I cannot find a direct comparison explanation ("hot" or "warm"), but I can find individually and confirm that both are grammatically correct.

  • Related: What does "I'm feeling hot" mean? Jul 4, 2016 at 11:23
  • @CowperKettle, can you point out the relation? I don't see a relation between "hot" as sexual connotation and is it right to use hot instead of warm to refer to high temperature.
    – XPMai
    Jul 4, 2016 at 11:26
  • 3
    Anyone who tries to claim that words like cold, cool, warm, hot can be precisely mapped onto specific temperature ranges is a complete idiot. Jul 4, 2016 at 13:44
  • @FumbleFingers, thanks! You should add that as answer. Btw, there are people who mapped it! Look at this Quora answer: quora.com/What-is-the-difference-between-the-word-warm-and-hot/…
    – XPMai
    Jul 4, 2016 at 14:23

2 Answers 2


First of all, as a speaker of American English, I would rarely say

I'm feeling hot/warm/cold.

This present progressive use of to feel is used for other things, such as

I'm feeling sick

At any rate, I could say

I'm hot/warm/cold.

if I wanted to report on my personal status.

But in many situations I would report on the temperature of my environment when I feel hot/warm/cold. Thus

It's hot/warm/cold/chilly (in/out here). (Could you fix it so that I'm not hot/warm/cold/chilly?)

So, yes you can say both It's hot or It's warm. And you can say this to either report a fact

It's hot. It's 40°.

It's warm. It's 30°.

or to indicate that you feel hot or warm. But feeling is subjective, and what is hot to one person may be warm to someone else.

Note I can remark on other facets of my environment, such as

It's humid/drafty in here.

but I couldn't say

*I'm humid/drafty

  • Hi, I'm inquiring on "hot" and "warm". Would you please cover that too? Perhaps this: "It's hot" vs "It's warm". Is the first one grammatically incorrect? Yes/no please explain. :)
    – XPMai
    Jul 4, 2016 at 16:15
  • Both of them are grammatical. I've edited my answer a bit Jul 4, 2016 at 16:29

To feel hot.

To feel warm.

Both of them are correct, but depending on the context you should use one and avoid the other. So it's basically context dependent.

  • WARM is generally regarded as something that is comfortable, on the other hand HOT is something uncomfortable, when it comes to talking about temperature you feel.


By morning she felt hot and sweaty, as though she was getting the flu.

She held her palms to the oven. It felt warm but not hot.

The room was cold, but under the blanket I felt warm and cozy.

Grace tried to breathe, but the room felt hot and noisy.

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