noun
warmth, heat
B1
Wärme is a feminine noun (die) meaning "warmth" or "heat", used for thermal sensation or heat energy. It is often uncountable or abstract. Plural form Wärmen exists but is rare; singular forms (die Wärme, der Wärme) are common. No special preposition; declension is regular aside from the unusual plural.
Examples
Die Pflanzen überlebten in der Wärme des Gewächshauses, obwohl draußen Frost herrschte.
The plants survived in the warmth of the greenhouse, although there was frost outside.
In der Hitze suchten wir Schutz vor der Wärme.
In the heat we sought shelter from the warmth.
Die Wärme der Sonne tut mir gut.
The warmth of the sun feels good to me.
Details
Mnemonics
Imagine sunlight warming your skin
sounds like 'warm' + 'me' — think of warmth on me
die Wärme — many German feminine nouns end in -e (Wärme ends with -e), so use 'die'
Notes
Often uncountable in German when referring to general warmth; plural forms are rare but exist in technical contexts.