The most important factor in determining the blooming time of cherry trees is the geographical location. Generally, the milder the climate, the earlier the blossoms open. On Japan’s southern, subtropical islands of Okinawa, cherry blossoms open as early as January, while on the northern island of Hokkaido, they bloom as late as May. In most major cities in between, including Tokyo, Kyotoand Osaka, the cherry blossom season typically takes place in early April. The cherry blossom season is relatively short. Full bloom (mankai) is usually reached within about one week after the opening of the first blossoms (kaika). Another week later, the blooming peak is over and the blossoms are falling from the trees. Strong wind and rain can cut the blooming season even shorter.