Has anyone ever been to Japan during the Summer?

You heard correctly. Japan is very hot and humid in Summer. Odds are that you will suffer from a bit of soar-throat and some headaches while adjusting to the constant change from air conditioned Hotels and restaurants to outside heat and humidity. This is very common and should not be mistaken for a cold.

It is common for people to carry a small cloth to dry sweat from their face.They sell very fancy as well as cute and inexpensive ones all over. Also you will see many people handing out small packets of paper clothes that are for this purpose also. They are free and have advertisements for various companies on them as a form of promotion.

Drink lots of fluids and enjoy some cool kakigori (shaved ice) and you will be fine. Also wear appropriate clothes that breath and change your socks often if possible. It can hamper your fun a little but don't let it stop you.

Hot,humid and sticky.Travel light ,wear anything but cotton, new age materials like coolmax are the best.Take some sandals as well as comfortable slip ons.Either take or buy a small towel to help keep you dry (most Japanese can be seen mopping neck and brow ). I took a freezer brick the last trip and a neoprene bottle cover with a shoulder strap and kept its bottle filled with cold water. The brick was for those nights when even air con couldn't stop my hair,head and neck from sweating in bed.I placed it inside my pillow and it helped heaps (also used with it my face towel when sitting in the open).If the weather is too much jump a train or plane and go to Hokkaido for a few days this is great or haunt shopping centres when it becomes unbearable the air con there can be near frigid.A trip or two into the hills near Tokyo is a pleasant relief from Tokyo heat or to the coastal areas. You will adjust just depends on how long you are going to be in Tokyo, drink lots of water and take some decent roll on and some nice cologne.It helps you feel better and smell better. Bon Voyage.

I lived in Japan for about 10 years. You can buy secondhand kimono for a reasonable price as Japanese generally turn up their noses at anything secondhand. Just look on e-bay, and there are places in Tokyo that deal in secondhand kimono. I've been to Harajuku on Sunday. I think a lot of cosplay people make their own outfits. To buy something like that Akihabara would be the place. I've seen a middle-aged man dressed up like Sailor Moon in Harajuku so cosplay attracts all kinds. Usually it's people in their late teens or early twenties. To attend a geisha party you would pretty much have to be invited by someone in the know. No money changes hands at a geisha party, so their clients pretty much have to be regulars who can be relied upon to settle their bills.