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fine weather during the rainy season
五月晴れの空の下で遠足を楽しんだ。
We enjoyed an excursion under the clear skies of May.
久しぶりの五月晴れに気分が晴れた。
The first clear weather in a while lifted my spirits.
五月晴れを利用して布団を干す。
I take advantage of the May sunshine to air out the futon.