I have visited all 47 prefectures in Japan and the Izu peninsula seems to have more hot springs per square kilometer than anywhere else. It would be almost impossible to put together a comprehensive guide of the Izu peninsula hot springs because there are simply so many.  So many of the small towns have a hot spring and within each town there are a large number of places to take a dip – from a basic municipal day hot spring to top-class ryokans where you can have a private bath with an ocean view.

There is a set of guidelines to using a hot spring in Japan. To sum them up:

There is a set of guidelines to using a hot spring in Japan. To sum them up:

  1. Take off all of your clothes in the change room and bring a small towel with you into the hot spring area.
  2. Wash yourself off before you get into the hot spring.
  3. Head into the hot spring but keep your towel out of the water. 
  4. Most people wash themselves again after they get out of the hot spring. 
  5. Head back to the change room.

Check the following links for an overview:

https://www.kashiwaya.org/e/magazine/onsen/rules2.html

There are a couple of hot springs around the peninsula where you actually must wear a bathing suit – they are noted below.

Due to historical / cultural association with criminals, many hot springs do not allow guests with tattoos and will have signs at the entrance saying so.  Some people with small tattoos cover them up with a large Band-Aid.  The number of hot springs that ban tattoos does seem to be slowly decreasing though.

Some small hole-in-the-wall hot springs do not have lockers – there is just a wicker basket where you leave your belongings.  Petty crime does seem fairly rare in Japan compared to elsewhere.  I have been to many hot springs around Japan and haven’t had any issues but I would be not that comfortable leaving something as important as a passport in a basket.

In some places (e.g. Atami) there are so many hot springs hotels it can be bit difficult to find one that lets non-guests take a bath.  Some cities / towns have a list of ryokans that allow non-guests in but I have not come across any in English yet.  If you are stuck you can always plug the follow phrase into Google Maps and you may be in luck: “日帰り温泉.”  This is “day hot spring” in Japanese (pronounced “higaeri onsen”).

The best experience for a hot spring though is staying at ryokan with a hot spring and getting full course Japanese meals.  At some ryokans there are more expensive rooms that have their own private bath.  If you look book one on the coast you be able to sit in your own hot spring bath with an ocean view.  See the accommodations page for more information about ryokans with hot springs.

Some of the hotels / ryokans require non-guests to call ahead for availability.  If a ryokan is too busy they may not open up the hot spring to visitors and some of them require booking ahead regardless.  The places that require a call are noted below.

The list below is focused on day hot springs since there are far too many hot springs at ryokans around the peninsula to list.

1. North Izu peninsula and the surrounding areaThis includes the city of Mishima and nearby areas.  Some places listed are just a bit north of the peninsula but they are close enough to include. 

Suruga no yu has indoor and outdoor pools and a restaurant.  The website is in Japanese.

Numazu Yugawara Onsen Manyo no Yu This place may be a bit more appealing to residents or people who will be in the area for a while as you need to sign up for a membership.  There are indoor and outdoor pools, a restaurant, and multiple rooms to relax in with reclining seats and blankets.

Stone Spa Arashi.  I have driven by here multiple times on the way to / from somewhere but have not been in yet but it is on my list of places to try.  In this kind of a hot spring you do not relax in a pool – you lay down on a bed of hot stones.  There is a similar type of place near Kawazu. According to the website they are “medicinal” hot stones with rejuvenating effects.  They also do massages.

Toki no Sumika is north-east of Numazu city in Gotemba.  It is a large area with multiple restaurants, multiple hot springs, a brewpub, bakery, places for children to play, etc.  You could spend a day here and there is an English website.  I have been to this hot spring on the premises and there is a great view of Mt. Fuji from one of the outdoor pools.  There are also rooms to relax.  No children are allowed at this particular hot spring. In winter Toki no Sumika has a big Christmas tree / lights event

2. Central Izu peninsula along route 414 This section starts south of Mishima at the city of Izuokuni and focuses on destinations on / near route 414 which heads north / south down to the town of Kawazu to the south-central part of the peninsula.  If you continue along this road heading south you will end up in the city of Shimoda on the south coast.  Shimoda is covered in the South Izu section

Gokurakuyu Public Bath is a day hot spring chain in Mishima.  There are a number of different indoor and outdoor baths, a sauna, as well as a restaurant, barber, and masseuse.  The website is in Japanese.  It is walkable from Mishima station.

Takekura Onsen Minakuchi-sou is quite small but it has rich brown hot spring water colored by underground minerals.  There are very few hot springs around with this kind of water.  There are a set of lockers between the front desk and the change rooms.  After you walk by the lockers turn right – the women’s hot spring is first and the men’s is further down the hall. There is a write-up about it here in Japanese – check out the photo of the water.

Yu~topia Kannami is fairly large town-run facility.  It has a day hot spring, a swimming pool, a restaurant, and a few other amenities.  The website does not have English.  The hot spring has a few different indoor pools, a few saunas, and outdoor pools as well.  When you are ready to go from the locker room to the hot spring watch the other people and follow their lead.  There a two doors – one to the hot spring and one to the swimming pool.  Nudity would not be greatly appreciated in the mixed-gender swimming pool.

Fujimikan has a few indoor pools that were a bit cooler than a typical hot spring (at least they were the last time I was there). The website is in Japanese.

Karonkasumi is not a regular hot spring but you can “bathe” in cypress powder and rice bran.  Check the photos on the website (Japanese).  Men are allowed only if accompanied by a woman.  It is 3500 yen per visit – more expensive than a regular hot spring and they do recommend checking ahead for availability.

Koubounoyu is a ryokan but non-guests can use the hot spring. In addition to the usual kinds of baths it has a “power stone” room. The website is in Japanese.

New Hakkeien is a ryokan where non-guests can use the hot spring.  There are indoor and outdoor pools as well as saunas.  There is a good view over the city from the outdoor pool.

Heading south along route 414 is Shuzenji which is a great place to relax and a significant number of visitors stay at ryokan to fully enjoy the hot spring experience.  There are, however, a lot of day spa options in Shuzenji

Around the city of Ito there are additional options:

Hyaku warai no yuu  (百笑の湯) is a day hot spring.

Laforet Resort Shuzenji (ラフォーレリゾート修善寺)is located a few kilometers south of the town.

Onsen Minshuku Fukui (民宿福井)is located in the heart of main tourist area of Shuzenji.

Shira Iwa So (白岩荘)is a few kilometers east of Shuzenji.

Heading down route 414 you can find Yu no Kuni Kaikan (湯の国会館)The website has some information in English

Toki no Sumika Tojijo Hotaru is located on route 136 between Izu city and the town of Toi. (湯治場ほたる 船原温泉.I have been here a few times – there are a number of different pools, additional rooms to relax in afterwards.

Further south and just off of route 414 is Terme Izumien (テルメいづみ園).

Hotel Winery Hill (縄文之御神湯 -中伊豆ワイナリーヒルズ)has some different hot spring baths.

Shira Iwa no Yu  (白岩の湯)is a small city-run day hot spring.

Ogawa Onsen Kyodo Yokujo (小川温泉共同浴場) is a small day hot spring.

In the Kawazu falls area, Nanadaru Onsen Hotel(七滝温泉ホテル)has both indoor and outdoor baths that visitors can use.

The Amagiso ryokan bathing experience is quite unique.  There are the usual hot spring baths but there are also baths outside along the river.  However, you need to wear a bathing suit for the riverside baths as they are mixed gender. It is more expensive that other hot spring options but the river experience is very rare.

Zen-no-yu (禅の湯) has indoor and outdoor baths.  Overnight guests also have access to a stone bath that the website says is “effective for health, relaxation, and beauty” and has a “mental healing effect.”

Izu no Odoriko no Yado Fukudaya(伊豆の踊子の宿福田家)is a ryokan located next to the Kawazu river.  The ryokan has an English website with a page about the hot spring here.

Kurhaus House Ishibashi Ryokan (クアハウス石橋旅館)has a few different baths.

Thousand-person bath Kanaya RyokanT千人風呂 金谷旅館has a unique set of baths – it’s worth a visit.

3. East Izu peninsula This part of the website starts with the Izu Skyline, then Atami, and from then on heads south along the east side of the peninsula and ends just before Shimoda. Shimoda is covered on the South Izu section.

Atami is a massively popular hot spring town and has options for every possible budget.  During holiday periods there will be large exodus of Tokyo-area residents to Atami so keep that in mind

Some of the more expensive hotels do allow non-guest to use the hot spring but some only allow this at certain times of the day.

Heart Pia Atami (ハートピア熱海) is north of Atami city and it has good ocean views

I have been to Nikkou-Tei Oo-Yu which is fairly well-known and is a popular place to visit.

Yamadayuu (山田湯) seems fairly small based on what I have seen online so far but I haven’t been there yet.  It seems to have an older, more local feel to it.

Fukunishiya (福島屋旅館) is on the smaller end of the scale and seems somewhat similar in character to Yamadayuu.

I have been to Nikkou-Tei Oo-Yu (日航亭大湯) which sees a fair amount of visitors.

Myoraku-yu(妙楽湯) has indoor and outdoor pools and serves food.

Oedo Onsen Monogatari Atami (大江戸温泉物語あたみ) is a ryokan that allows non-guest to use the hot spring.

Yume Iroha(夢いろは) is a ryokan a bit closer to the train station.

Hotel Micuras (ホテルミクラス) is quite popular and the hotel has good reviews.

Atami Juraku Hotel (秀花園湯の花膳) is a bit more upscale and allows non-guest to use the hot spring.

Nagisakan (料理旅館渚館) is hotel located quite close to the beach.

KKR Hotel Atami (KKRホテル熱海) is a popular / upmarket hotel close to the ocean. Non-guests can use the hot spring.

Shin Kado Ya (新かどや) is another upmarket hotel where visitors can use the hot spring.

Tachibana (旅館立花) is close to the ocean.

Yuujuku mikan no ki (湯宿みかんの木) is close to Atami Sun Beach

Yuu no Yado Ookawa (湯の宿おお川) is close to Kinomiya station.

Kanpo no Yado Atami Betsukan(かんぽの宿熱海別館) is located on a hill in the southwest part of Atami.

Ocean Spa Fuua AKA Atami Bay Resort Korakuen (オーシャン スパ Fuua) is an upmarket resort / hotel in the south-east part of the city in the area of Atami Castle (it a long roundabout uphill walk to the castle though).

Marine Spa Atami (マリンスパあたみ) has a hot spring as well as a waterslide.

New Tomoyoshi(味と湯の宿ニューとみよし) is south of Atami in the area of Izu-Taga station.

The following places are in the town of Ajiro which is down the coast from Atami.

Ajiro Isofune hotel(あじろ磯舟ホテル) This page of the website (in English) shows different private baths that can be booked.

Izu Shofuen Onsen (伊豆網代温泉) has a private bath that can be booked (3000 yen).

Shima no Yuu(島の湯) is located on the island of Hatsushima east of Ajiro.

Taiseikan (大成館) is on coast very near Ajiro onsen beach.

Yuu no Kado Hiratsuru (平鶴) is right on the ocean.

Tabinoya Usami Onsen Umi Hotel (旅乃家 宇佐美温泉 海ホテル)  is on the the coast quite close to Usami Beach.  They allow visitors to use the hot spring from 13:00 to 18:00.

Ito Higaeri Onsen Asahi no Yu (伊東日帰り温泉 朝日の湯) is south of Ajiro on the second floor of Roadside Station Marinetown.

Myoraku-yu (妙楽湯)has baths both inside and outside and serves meals in a traditional building.

Wada YuKaikan(和田湯会館)is a day hot spring ins a beautiful older building.

Resort Center Minori (リゾートセンター みのり) has multiple indoor and outdoor baths and a restaurant.

Matsubara Daikoku Tenjin Onsen (松原大黒天神の湯) is a smaller day hot spring. 

Yukawa Daini Yokujo Benten Hot Spring(湯川第二浴場 弁天の湯)is a small local day hot spring close to the Ito train station

Ogawa Hotei no Yu (小川布袋の湯) is fairly small day hot spring.

Bishamontenshiba no Yu (毘沙門天芝の湯) is a day hot spring with a few indoor baths.

The very large Shimoda Prince Hotel is located right behind Shirahama beach and the hot spring bath has a great view of the ocean.

4. South Izu peninsula This page starts with the city of Shimoda and continues clockwise around the bottom of the peninsula until Hirizo beach which is at the southwest corner of the peninsula.

There are different day hot spring options in the Shimoda area.

Shimoda View Hotel(下田ビューホテル) is located close to Sotoura beach.

Shimoda so (浜辺の湯 下田荘) is located close to Sotoura beach.  It has an English website.

Shimoda Jyuraku Hotel (下田聚楽ホテル)is a bit south of Shirahama beach. The hotel has an English website.

Shimoda Izumi So (いづみ荘)is located in central Shimoda and has an indoor bath.

Showa Yu (昭和湯)is a day hot spring in the south part of Shimoda city close to Perry Road and it has an older nostalgic charm to it.  “Showa” is the name of the post-WWII era in Japan.

Kurofune Hotel -“Blackship Hotel” (黒船ホテル)faces Shimoda Bay. It has an indoor and outdoor bath.

Shimoda Bay Kuro Shio(下田ベイクロシオ)is a few hundred meters to the east of downtown Shimoda and has a few different baths open to day hot spring visitors.

LiveMax Resort Izu Shimoda(リブマックスリゾート伊豆下田)is near the coast halfway between Shimoda and Yumigahama.

Kannon Onsen(観音温泉) is about 12 km north west of Shimoda city.  This ryokan has slightly alkaline hot spring which gives it a smooth feel to it.  There are different baths inside and outside.  The grounds outside are also a nice place to relax.  I have been here and would go back.

Minato-yu (みなと湯)is a slightly older day hot spring with an indoor bath.

Yushoku Emimon no Yadoseki Ryokan湯食笑門の宿石廊館 源泉 is in the town of Minami Izu and has a few different baths.

Hotel Kawachiya (ホテル河内屋) is located on the Aono river in the town of Minamiizu.

I have not been able to find anything in the southwestern most part of the peninsula.  It is the most remote part of the peninsula and there may be less underground thermal activity there.

5.  West Izu peninsula This section continues clockwise direction and starts at the southwest part of the peninsula and finishes at the northwest tip of the peninsula.

Ideyu-so (いでゆ荘石部温泉) is in in the Kamo district of the town of Matsuzaki.  It has an indoor and outdoor bath.

Heiroku Jizou Open Air Bath (平六地蔵露天風呂) is somewhat different from the typical day hot spring.  It is a mixed-gender bath and you must wear a bathing suit.  Also, it is only open from May to October.  It is run by the local townspeople.

Fune no Onsen (舟の温泉).  This “boat” hot spring is on Iwachi beach from mid-May to late October.

Osawa Onsen Yoda no Sho(大沢温泉 依田之庄)  This day hot spring is located in a historical building called the  “Yoda house” (no, not that Yoda) which is a historical landmark.  The main building is 300 years old.  If you are in the area this is worth visiting.

Not far away you can find a small hot spring with outdoor pools at Osawa-sou (野天風呂 山の家). The day hot spring is worth it but you can also stay overnight.  The website is in Japanese.

Nishiizu Choyakuba Chukoshuyokujoseseragi Hot Spring (西伊豆町 中公衆浴場 せせらぎの湯)is a day hot spring run by the town of Nishiizu. The website has a translate function.

Sakurada Onsen Sanpouen(桜田温泉 山芳園) Reservations are required for the day hot spring.

Nishiizu Choyakuba Ohama Koshuyokujo Nagisa Hot Spring(西伊豆町 大浜公衆浴場 なぎさの湯)It has an indoor and outdoor pool.

Nishiizu Choyakuba Chukoshuyokujo Seseragi Hot Spring(西伊豆町 中公衆浴場 せせらぎの湯) It has an indoor and outdoor pool and is next to the Nishina river.

Sawada park open-air bath (沢田公園 露天風呂)I have been here a number of times.  There is a small building on the right side of the parking lot where you pay.  The hot spring is located up above the parking lot on the right.  There is a very small change room with lockers.  There is one small bath on the men’s and women’s side with a great view of the ocean.  The hot spring doesn’t have shampoo of body soap – just rinse yourself off before you hot in.

Dogashima Onsen Hotel(堂ヶ島温泉ホテル) This hotel is located right on the coast.

Umibe no Kakure Yu Seiryū(海辺のかくれ湯 清流) I have been to the day hot spring here and there are indoor and outdoor baths.  The best bath is located down hallway and down a set of stairs and is in the open air right next to the ocean.

Shiosai-no-yuしおさいの湯 is a day hot spring located on a small road on the way to the Futo coast.

Gorinkan五輪館 is a small ryokan where you can use the day hot spring.  It is not far from the Futo coast.

Yamabiko-so(やまびこ荘) is north east of Dogashima – about 10 km inland.  This is a unique place as it is in renovated school.  Classrooms have been converted to “hotel rooms” where you can stay overnight and there is day hot spring with an indoor pool.  It is run by the town.

The Crystal View Hotel西伊豆クリスタルビューホテル overlooks Crystal beach.

The follow locations are in the town on Toi.

Benten no Yu (弁天の湯) is a day hot spring in the north west part of Toi

Kusunoki no Yu (楠の湯)is a small day hot spring that I have been to a few times.  There is a ticket vending machine out front – I haven’t been there in a few years but I don’t remember any English on it.  However, if the tickets for adults are usually on the top left.  When I was there there was no soap / shampoo so you will need to bring your own.  The pool is small but what sets this place apart is the temperature of the hot water – it is far hotter than a typical hot spring.

Moto Yu Onsen (元湯共同浴場)is close to Kusunoki no Yu and seems somewhat similar – a small local day hot spring.

Yakata Onsen Kyodo Yokujo (屋形温泉共同浴場)is a small local hot spring.

In the town of Heda, Ichi no Yu (壱の湯) is a day hot spring at the Roadside Station Kurura Heda.  I have been here a few times and the facility also includes a small restaurant and souvenir store. 

The Tokiwaya Hotelときわや in Heda does allow non-guest to use the main bath but you need to make a reservation.  They have an English website.

Heda also has an “onsen stand” (戸田温泉スタンド) that has a coin -operated dog washing tub so your dog could get a bit of the experience.