Except for the Hokkaido area and the subtropical Okinawa region, the weather is mostly temperate, with four seasons. Summer, between June and September, ranges from warm to very hot, while spring and autumn are generally mild throughout the country. Rain falls throughout the year but June and early July is the main rainy season. Hokkaido, however, is much drier than the Tokyo area.
Rainfall is intermittent with sunshine.
Typhoons are only likely to occur in September or October but rarely last more than a day. There is much less rainfall than in Western Europe. Much warmer clothes will be needed in the mountains all year round.