天気がよい

the weather is nice

→ 天気
phrase Rare #37,510
the weather is nice A somewhat formal or written way to say that the weather is fine or good. In everyday conversation, 天気がいい is more common.
JA: 今日は天気がよいので、外で昼ご飯を食べましょう。
EN: The weather is nice today, so let's eat lunch outside.

天気がよいから散歩に行きたい気分だ

The weather is nice, so I feel like going for a walk.

一週間ずっと天気がよい

The weather has been nice all week.

今週はずっと天気がよい

The weather has been good all week.

天気がよいのでこれは幸いとばかりテニスをした

Taking advantage of the nice weather, I played tennis.