Editing Geography of Japan (section)

===Summer===
The climate from June to September is marked by hot, wet weather brought by tropical airflows from the Pacific Ocean and Southeast Asia.<ref name=loc/> These air flows are full of moisture and deposit substantial amounts of rain when they reach land.<ref name=loc/> There is a marked rainy season, beginning in early June and continuing for about a month.<ref name=loc/> It is followed by hot, sticky weather.<ref name=loc/> Five or six typhoons pass over or near Japan every year from early August to early October, resulting in significant damage.<ref name=loc/> Annual [[Precipitation (meteorology)|precipitation]] averages between {{convert|1000|and|2500|mm|-1|abbr=on}} except for areas such as [[Kii Peninsula]] and [[Yakushima Island]], which is Japan's wettest place,<ref>{{cite web |title=Japan Climate Charts Index |url=http://www.climate-charts.com/Countries/Japan.html |access-date = 2015-10-11 |archive-url = https://web.archive.org/web/20171030040135/http://www.climate-charts.com/Countries/Japan.html |archive-date = 2017-10-30 |url-status = dead}}</ref> with the annual precipitation being one of the world's highest at 4,000 to 10,000&nbsp;mm.<ref>{{cite web |title=Yakushima World Heritage property |url=http://www.env.go.jp/nature/isan/worldheritage/en/yakushima/area/index.html |publisher=Ministry of the Environment |access-date=2015-10-11 |archive-date=2016-04-04 |archive-url=https://web.archive.org/web/20160404162105/http://www.env.go.jp/nature/isan/worldheritage/en/yakushima/area/index.html |url-status=live }}</ref>

Maximum precipitation, like the rest of East Asia, occurs in the summer months except on the Sea of Japan coast, where strong northerly winds produce a maximum in late autumn and early winter. Except for a few sheltered inland valleys during December and January, precipitation in Japan is above {{convert|25|mm|in|0}} of rainfall equivalent in all months of the year, and in the wettest coastal areas it is above {{convert|100|mm|in|0}} per month throughout the year.

Mid-June to mid-July is generally the [[East Asian rainy season|rainy season]] in Honshu, Shikoku, and Kyushu, excluding Hokkaido since the seasonal rain front, or {{nihongo|''baiu zensen''|梅雨前線|}}, dissipates in northern Honshu before reaching Hokkaido. In Okinawa, the rainy season starts early in May and continues until mid-June. Unlike the rainy season in mainland Japan, it rains neither everyday nor all day long during the rainy season in Okinawa. Between July and October, typhoons, grown from tropical depressions generated near the equator, can attack Japan with furious rainstorms.