晴天|せいてんseiten[0]heiban (flat)

1. nounfine weather (i.e. little or no clouds); fair weather; clear weather; clear sky; fair skies
   雨天うてんの後あとには晴天せいてんが来くる。↗

   After rain comes fair weather.

• Synonym好天こうてんWrittenWritten/formal prose for fine weather, as in 「好天に恵まれる」; leans toward weather-forecast style.
• Synonym晴れはれNeutralThe everyday word for sunny weather; also covers formal, ceremonial occasions, as in 「晴れ着」. The most common choice in speech.
• Synonym好晴こうせいWrittenWritten/formal prose for fine weather; rare in modern Japanese and seldom a natural swap for 「晴天」.
• Synonym上天気じょうてんきCasualColloquial for splendid fine weather, but actual examples are scarce; in speech people normally say 「いい天気」.
• Related日本晴れにほんばれNeutralA completely cloudless, brilliant sunny day, as in 「日本晴れの空」; stresses perfect clearness more than 「晴天」 does.
• Antonym雨天うてんNeutralNeutral word for rainy weather; the direct opposite of 「晴天」.
• Antonym曇天どんてんWrittenWritten/formal prose for an overcast, cloudy sky; the opposite of 「晴天」.
• Antonym悪天あくてんNeutralBad weather such as storms or heavy rain; set against 「晴天」 as the good-weather term.

For fine weather 「晴天」 is the standard written/formal choice, as in 「晴天に恵まれる」 or 「晴天が続く」. In everyday speech say 「晴れ」; for a totally cloudless sky 「日本晴れ」. The opposites are 「雨天」 and 「曇天」.

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

1. 晴はれた空そら。