The Kansai area of Japan, and many other parts of the country, are well known for having high humidity. Osaka, Kyoto and Kobe are three cities that rank high on humidity. So far this year, the humidity is relatively low. But that will change, no doubt.
For the past several years, high humidity always seems to come and stay right after the first typhoon passes through the Kansai region. From that point on, it is here for the duration of the summer and doesn’t go away until autumn begins coming around.
The difference between now and then is the nights. Right now, the nights are relatively pleasant to sleep through with the windows open. There’s a cool breeze that can still be felt and the air is cool enough one can sleep with a light blanket. However, after that first typhoon comes blowing through, sleeping through the nights with the windows open will be unbearable, at least for those who don’t mind sleeping and sweating at the same time.
The good news about the high humidity in Japan is that it doesn’t last long. It usually comes and goes in about 2 to 4 weeks, depending on when the typhoon comes and leave its nastiness behind.
When the area becomes mushi atsui, thick with humidity, the best way to battle it is with a nice fan with the windows open – make sure you have good window screens to keep out the pesky mosquitoes (another story) – or you can close the windows and definitely keep the mozzies out and turn on the air conditioner.
For people who have joint problems, before you go to sleep make sure the air conditioner is pointing up or away from your body so the air doesn’t blow directly on you. If you sleep with the air blowing right on you, you may wake up in the morning stiff. Cool air tends to make joints and muscles stiff, and may cause some people to cramp at night. Air conditioners can also over-dry air which could potentially bother asthmatics or those with sinus or snoring problems.