The rainy season in Japan is known as tsuyu, or 'plum rain', because it coincides with the ripening of plums. For most parts of Japan, the season lasts for a month beginning in mid-June, but in Okinawa, it begins in May.
I actually kind of like the rainy season because it makes for great reading weather. However, it does not make good weather for riding a motorcycle.
Here is what two weeks of no riding has done to my shoes:
