For the past several years, Japan’s summers have been incredibly hot. In fact, from the end of the rainy season in late June through August, we often say “atsui desune” (“it’s hot, isn’t it”) instead of more standard greetings like “konnichiwa.”
Though the locals here think it’s quite warm in Shima Onsen, those who come visit from the hotter Kanto Plain area always tell us how cool it is here.
Part of the reason it’s so cool here has to do with our elevation (about 650 meters). However, an even bigger factor is the fact that the Shimagawa River, famous for its Shima Blue water, runs alongside the onsen town.
The water of Shimagawa River is cold even in summer, and the wind that blows from the river envelops Shima Onsen Town. It’s just like a natural air conditioner!
There are many areas near the river in Shima to enjoy the cool weather.
Ishigashira no Sawa is located across from Asahi Bridge, and its water runs into the Shimagawa River.
Ishigashira no Sawa is very close to Kashiwaya Ryokan, making it perfect for a morning or evening stroll. You can play in the water there, and there is also an abundance of fish that you can catch. If you are in the area now, you can enjoy the bamboo lanterns as well.
About 1.5 meters down-river from Kashiwaya you can see natural pools in the Shimagawa River called oketsu. Recently you can even see people swimming in these pools.