お天気|おてんきotenki[2]nakadaka (mid-high)

1. nounweather
   いいお天気てんきですね。↗

   It's a beautiful day, isn't it?
2. nounmood; temper
   それに比くらべ最近さいきん彼女かのじょのお天気てんきは良好りょうこう。↗

   In comparison to which she's been in a really good mood recently.

• Synonym天気てんきNeutralThe plain, everyday word for weather with no polite coloring; 「お天気」 sounds softer and more conversational and can also refer to someone's mood.
• Synonym天候てんこうWrittenA written, formal word for weather conditions over a period of time, common in news reports, as in 「天候不順」; more formal than 「お天気」.
• Related気象きしょうWrittenA scientific term for atmospheric phenomena, as in 「気象庁」; it can also mean temperament, but unlike 「お天気」 it does not refer to a momentary mood.
• Related日和ひよりNeutralRefers to fine, sunny weather, and works as a suffix for weather suited to an activity, as in 「行楽日和」; 「お天気」 covers any kind of weather.
• Related空模様そらもようNeutralThe weather as read from the look of the sky, often suggesting it may turn bad; figuratively it can describe how a situation is developing.
• Related天気模様てんきもようWrittenA written-style word for the weather conditions at a given moment, used only rarely; in daily conversation 「天気」 or 「お天気」 is all you need.

For everyday weather say 「天気」, or 「お天気」 for a softer, more polite tone — it can also mean someone's mood. Use 「天候」 in news reports, 「気象」 in scientific contexts, 「日和」 for a fine sunny day, and 「空模様」 when the sky looks like it might turn bad.

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

1. 空そらの状態じょうたい。晴はれ、雨あめ、曇くもりなどの大気たいきの様子ようす。
2. その時ときの気分きぶんや機嫌きげん。心こころの状態じょうたい。