I bet you didn't know it was warm and often humid, Japan has such a polar opposite of seasons its hard to imagine it has such dry powder snow and the highest snowfall in the world, then in summer you need to pack a fan for when you trek around. Check out some great activities this summer, courtesy of Lonely Planet. https://www.lonelyplanet.com/japan/travel-tips-and-articles/best-things-to-do-in-summer-in-japan
Konbanwa-good evening- こんばんは