The annual rainy season in Japan known as "Tsuyu" usually takes place in June and lasts for about a month. Its usually hot n muggy at the same time too.
While we did get a bout of rain when the season started, its been really dry with only 3.5 mm of rain so far. I'm sure we will eventually get our rainy season though as I'm eager to continue to test my new umbrella a wee bit more ^o^
Do you have rainy seasons in your neck of the woods too?