Is it normal to wear shorts in Japan?
Mostly.Normal for most people
Yes, wearing shorts in Japan is normal, especially in warm weather and casual settings. You may want longer or smarter clothes for work, formal occasions, or places with dress expectations.
Shorts are a common choice in Japan during hot weather, and you won’t stand out just for wearing them. What feels appropriate depends more on the setting than on being in Japan: casual sightseeing is one thing; a formal restaurant, workplace, or special occasion is another.
If you’re visiting a temple or shrine, shorts are generally not automatically forbidden, but dressing a little more modestly is a considerate choice. In short: wear what’s comfortable, and dress up when the occasion calls for it.