noun
stormy weather; rough weather
Refers to weather with strong winds, heavy rain, or high waves. Often used in forecasts, maritime contexts, and formal descriptions.
明日は荒天が予想されるため、登山は中止になった。
Because stormy weather is expected tomorrow, the mountain climbing was canceled.
荒天のため、フェリーが欠航になった。
Due to rough weather, the ferry service was suspended.
Compound of 荒 (rough, wild) and 天 (sky, weather). The reading こうてん is the on'yomi of both characters.