How do you say "hot" in Japanese?

In Japanese, "hot" is 暑い (atsui). It is a adjective pronounced "ah-tsoo-ee".

Listen to the pronunciation:

Pronunciation

暑い is written in kanji and hiragana. Romanised as atsui, it sounds roughly like "ah-tsoo-ee" to an English ear.

Example sentence

今日の天気はとても暑いです。

Kyou no tenki wa totemo atsui desu.

Today's weather is very hot.

Usage notes

Atsui (暑い) refers to hot atmospheric temperature. Use it for weather and hot days. For objects that feel hot to the touch, use atsui in a different context, or netsui for a fever.

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Questions about 暑い

How do you pronounce 暑い?

暑い is romanised as atsui. Say it roughly like "ah-tsoo-ee" in English. Each Japanese syllable has even weight, so keep the rhythm steady.

Is 暑い formal or casual?

暑い is an i-adjective. The form shown is the plain form, which works in casual speech. To make it polite, add desu at the end of the sentence. The word itself does not change.

How is 暑い written in Japanese?

暑い is written using kanji and hiragana. Kanji characters carry the core meaning; any hiragana or katakana that follow show grammatical endings.

This word is part of the vocabulary taught in the Japanese language learning game Noun Town, where words are introduced through play rather than memorisation.