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Roughly speaking, the first half of summer is tsuyu,
or the rainy season, in Japan. It is caused by a
collision that arises between two different air
masses of the same strength, that is, a cold
northerly mass and warm southerly mass. The
collision forms a stationary front that moves slowly
between the south and north. This stationary front
makes cloud to cause rain that lasts long. It
finishes by late June in Okinawa, and usually ends
in Shimane by middle part of July. As the rainy
season ends, full summer begins. The summer is very
hot and humid, but green leave around are so
beautiful. |
