noun
Refers to a period of calm weather, especially at sea, when the wind dies down and the water becomes still. Often used in contrast to 時化 (しけ, stormy weather).
Antonyms: 時化
台風が過ぎて、海は凪になった。
After the typhoon passed, the sea became calm.
今日は風がなくて、絶好の凪だ。
There's no wind today; it's perfect calm weather.
Antonym: 時化 means stormy or rough weather at sea, the opposite of 凪.
The kanji 凪 is a 国字 (kokuji, a Japanese-made kanji) combining 風 (wind) and 止 (stop), literally 'wind stops'. The reading なぎ is the noun form of the verb 凪ぐ (なぐ, to become calm).