How to say "warm" in Japanese

Choosing the right word
  • 暖かいあたたかいJLPT N5approx.Common
    i-adjectiveCovers pleasant warmth: mild weather, a warm room, bathwater or clothing, and figuratively a warm, kind person or heart — the word for the friendly warmth that English 'warm' often carries.
    だんだん暖あたたかくなります。↗
    It will get warmer and warmer.
  • 温めるあたためるJLPT N2approx.Common
    ichidan verb, transitive verbThe verb for warming something up: food, drinks, a room. You use it when 'warm' is an action you perform on something, not a description of a state.
    ミルクを温あたためてくれませんか。↗
    Will you warm the milk, please?
  • 暑いあついJLPT N5approx.Common
    i-adjectiveReally means 'hot' — uncomfortably hot weather or air. It only marginally means 'warm'; for pleasantly warm weather this is seldom the word you want.
    この夏なつ最高さいこうの暑あつさだ。↗
    It is the hottest this summer.
  • 温暖おんだんJLPT N3approx.Common
    na-adjective, nounDescribes warm, mild climates and regions — the 'temperate' sense — rather than the temperature of objects, food or bodies. Choose it when talking about climate, not everyday warmth.
    島しまの天候てんこうはとても温暖おんだんです。↗
    The island has a mild climate.
  • 手厚いてあついCommon
    i-adjectiveOnly figurative: warm, kind, hospitable treatment or reception — a warm welcome, generous care. It never describes physical temperature; if 'warm' means heat, this is not the word.
    Captain Cook thanked the natives for their hospitality.

Use 「暖かい」 for pleasant warmth of weather, things or feelings, 「温める」 when warming something up, 「暑い」 only for hot rather than mild weather, 温暖 for mild climates, and 「手厚い」 for warm, hospitable treatment.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese equivalents
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JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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