May is usually when the rainy season begins. Right now, many people are hoping that it will begin in earnest soon because we have had a very dry winter (dōng tiān, 冬天) and spring (chūn tiān, 春天). While this made for a very nice mild temperature and climate, the city could use the water. Today was the first rain (xiàyǔ, 下雨) this May (wǔ yuè, 五月). We'll see if this starts a trend.