How to say "sunny" in Japanese

• 朗らかほがらかJLPT N2approx.Common
  na-adjectiveCovers 'sunny' as brightness and good cheer: it can describe a clear, sunny sky, and equally a cheerful, merry person or mood. Think of a bright, cloudless morning or a sunny smile.
  母ははは、のんきでほがらかでお人ひと好よしです。↗

  My mother is carefree, cheerful and good-natured.
• 晴れ晴れはればれCommon
  adverb (with と), suru verbThe word for literal sunny weather: a clear, cloudless sky with nothing to block the sun. It has a bright, refreshing feel, suiting descriptions of a fine day.

For 'sunny' weather — a clear, cloudless sky — 「晴れ晴れ」 is the straightforward choice; 「朗らか」 also fits bright, clear skies, and is the word when 'sunny' means cheerful and merry, of a person or mood.

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

• 朗らかほがらかcheerful
• サニーsunny
• 日当たりの良いひあたりのよいsunny (room, etc.)
• 晴れやかはれやかclear
• 晴れ晴れはればれclear (sky)
• 明るいあかるいcheerful