Undoubtedly Onsen is a very important part of travel to Japan from Singapore.
I will explain to you useful ranking – index 100sen. Yes, Japan has so many ranking systems haha.

Index 100sen is conducted by Kankokeizai News Corporation and it awards the top 100 excellent Onsen in Japan.

Today, I will explain and translate the best 5 of them.

5. Ibusuki Onsen / Kagoshima

Ibusuki Onsen Photo of the sand bath

Ibusuki is part of Kagoshima and has more than 1000 spring sources. The most unique part of Ibusuki Onsen is the “sand bath”. It looks funny as you see, however it is said that entering the sand has many effects such as increased cardiac output and increased deep body temperature. The effect is 3 to 4 times that of a normal hot spring.

4. Arima Onsen / Hyogo

Arima Onsen

Arima Onsen attracts many Japanese who want tranquility with beautiful natural surroundings. Arima Onsen was named in “The Pillow Book”, a famous Heian Era book, as one of the three famous springs in Japan. It was selected as the most prestigious hot spring during the Edo Era.

3. Gero Onsen / Gifu

Gero Onsen

Gero Onsen is an Onsen resort that has a history of 1000 years and is well-known nationwide for its good spring quality. The onsen has a very smooth texture and is effective for keeping your skin smooth. So, it is very popular with female customers.

2. Beppu Hatto Onsen / Oita

Onsen Beppu - 別府温泉 - Source d'eau chaude Beppu - Hot Springs Beppu

Beppu Hatto Onsen is a group of hot springs in Oita. And the group is divided into eight major hot spring areas.
The most significant characteristic of Beppu Hatto Onsen is the richness of its resources. The volume of water discharged is the second-largest amount of hot spring water discharge in the world, and the largest amount in Japan.

1. Kusatsu Onsen / Gunma

KUSATSU ONSEN

Kusatsu Onsen is a hot spring resort located in Gunma Prefecture, Japan, northwest of Tokyo. It is a popular tourist destination. The springs were known as a resort for centuries, but they became well known after the water was recommended for its health benefits by Erwin von Baelz, a German doctor who taught medicine at Tokyo University.

What do you think about the ranking? I hope it helps your planning to travel to Japan from Singapore.