(にゅうばい)

にゅうばい
noun
start of the rainy season
1. start of the rainy season; onset of tsuyu
The official beginning of the rainy season (梅雨) in Japan, typically announced by the Japan Meteorological Agency around early to mid June. Marks the transition into weeks of frequent rain.
今年(ことし)入梅(にゅうばい)例年(れいねん)より(はや)かった。
The start of the rainy season was earlier than usual this year.
気象庁(きしょうちょう)入梅(にゅうばい)発表(はっぴょう)した。
The Japan Meteorological Agency announced the start of the rainy season.
入梅(にゅうばい)(むか)えると洗濯物(せんたくもの)(かわ)きにくくなるので、除湿機(じょしつき)準備(じゅんび)しておいたほうがいい。
Once the rainy season starts, laundry has trouble drying, so you should have a dehumidifier ready.

Composed of (にゅう) (entering) + (ばい) (plum), short for 梅雨(つゆ/ばいう) (rainy season). The rainy season is called 梅雨(つゆ) because it coincides with the ripening of plums ((うめ)).

COMMON COLLOCATIONS:

  • 入梅(にゅうばい)(むか)える: to enter the rainy season
  • 入梅(にゅうばい)時期(じき): the time of rainy season onset
  • 入梅(にゅうばい)宣言(せんげん): official rainy season declaration

SIMILAR WORDS:

  • 梅雨入(つゆい)り: start of the rainy season — the more common everyday expression with the same meaning
  • 梅雨明(つゆあ)け: end of the rainy season — the opposite, marking when the rains stop
  • 梅雨(つゆ): rainy season — the season itself

CULTURAL NOTE:
The 入梅(にゅうばい) announcement is a major seasonal event in Japan, heavily covered by news media. It typically occurs in early June in the south (Okinawa can be as early as May) and progressively later moving north. Hokkaido generally does not have a distinct rainy season.