降温 jiàngwēn to become cooler
to become cooler; to lower the temperature; cooling; (of interest, activity etc) to decline
How to remember 降温: 降 to descend + 温 warm = to become cooler.
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How it is used
- Literally means the temperature drops: 明天降温 (it'll get colder tomorrow) - very common in weather talk.
- Figuratively used for enthusiasm, activity, or relationships cooling off: 两人感情降温 (the relationship has cooled).
- The literal weather sense is by far the more frequent everyday use.
- Contrast with 降价 - same 降 pattern, different domain (temperature vs. price).