The rainy season has just started in Tokyo.
It is called 梅雨(tsuyu) and we have a lot of rainy days from late-May to mid-July.
There are different stories about why we call the rainy season 梅雨; rain(雨) pouring when Japanese plums (梅) grow in abundance, 黴雨(baiu) meaning rain pouring when everything turns moldy easily changed to 梅雨(baiu) with the same sound.
It's unpleasant dump climate, but essential to grow crops and save water for summer.
There are a lot of words that associate with visual images of seasons.
Below are words related to the rainy season.
samidare; literally means "May rain," but this May shows May in the lunar calendar (June in the solar calendar)
hashiri tsuyu/tsuyu no hashiri; gray sky under which it rains on and off before the rainy season starts
tsuyu iri; start of the rainy season
nyuubai; start of the rainy season on the calendar (around Jun.11)
tsuyu bare; clear sky during the rainy season
tsuyu gumori; gray sky during the rainy season
kara tsuyu; dry rainy season
modori tsuyu/kaeri tsuyu; weather similar to the rainy season after it was over
okuri tsuyu; heavy rain with thunder just before the rainy season is over
tsuyu ake; end of the rainy season
A feeling in the seasons is one of wonderful things in Japanese.