noun
ideal weather for an outing
Describes a day with perfect weather for a trip, picnic, or outdoor activity. Often used in weather forecasts or casual conversation.
今日は行楽日和ですね。
It's perfect weather for an outing today, isn't it?
明日は行楽日和になりそうだ。
It looks like tomorrow will be ideal weather for a trip.
日和 alone means 'weather' or 'fine weather', while 行楽日和 specifically refers to weather suitable for outings.
Compound of 行楽 (こうらく, 'outing') and 日和 (びより, 'weather' or 'fine weather'). The reading びより is a rendaku form of ひより.