It is now officially summer -- just in time for Ocean Day (uminohi):

For more about Ocean Day:
https://study.gaijinpot.com/lesson/holidays/ocean-day/

For the Japan Times article:
http://www.japantimes.co.jp/news/2016/07/18/national/weather-agency-declares-rainy-season-western-central-parts-japan-kyushu/#.V4ytSFccMpY