Right Onsen › Kanagawa › Baths with an open-air pool
Outdoor onsen (rotenburo) in Kanagawa
76 baths in Kanagawa. An open-air bath is the single most common reason to pick one onsen over another.
Hakone · The facility has open-air rock-carved outdoor baths described as spacious and natural.
Price: ¥1,450 · Day visitors: Yes · Sauna: Yes · Tattoos: AllowedYokohama · Visitors described an outdoor bath area including a carbonated-spring outdoor pool with a TV.
Day visitors: Yes · Sauna: Yes · Tattoos: Cover requiredHakone · Several outdoor baths set among trees are a highlight of the facility.
Price: ¥1,700 · Day visitors: Yes · Sauna: Yes · Tattoos: AllowedYokohama · One visitor (2026-08) noted the outdoor bath area feels open and enjoyable.
Price: ¥3,000 · Day visitors: Yes · Sauna: Yes · Tattoos: Not allowedYokohama · Visitors described an appealing outdoor bath with good views in 2026.
Day visitors: Yes · Sauna: YesYokosuka · Multiple reviews (2025-2026) describe an ocean-view outdoor bath, sometimes with two temperature options.
Day visitors: Yes · Sauna: Yes · Tattoos: Not allowedKawasaki · Visitors praised the outdoor bath, describing both indoor and outdoor baths as spacious.
Day visitors: Yes · Sauna: YesChigasaki · Multiple visitors in 2026 described an outdoor bath area with a large carbonated pool, jar bath, and reclining bath with TV.
Day visitors: Yes · Sauna: Yes · Tattoos: Cover required · Payment: Cards acceptedYokohama · The facility has an outdoor bath area in addition to indoor baths (2026).
Day visitors: Yes · Sauna: Yes · Tattoos: Not allowed · Payment: Cards acceptedHakone · The communal bath area includes two types of outdoor baths.
Day visitors: Yes · Sauna: YesYokohama · Multiple outdoor baths are available, one of which has a roof for shade or rain.
Day visitors: Yes · Sauna: YesKawasaki · Visitors describe two outdoor bath tubs that are relaxing, especially on cooler or quieter days.
Price: ¥1,080 · Day visitors: Yes · Sauna: Yes · Tattoos: Not allowedKawasaki · There is one outdoor bath surrounded by rocks and trees in a Jomon-inspired style.
Day visitors: Yes · Sauna: Yes · Tattoos: Not allowedYokohama · Visitors describe a spacious outdoor bath area, including one with a television and night-sky views.
Day visitors: Yes · Sauna: Yes · Tattoos: Not allowed · Payment: Cards & QR acceptedYokohama · Multiple outdoor baths use the black mineral water, arranged in tiered pots and larger tubs.
Day visitors: Yes · Sauna: Yes · Tattoos: Not allowedHiratsuka · Multiple 2026 reviewers described enjoying the outdoor bath area along with the sauna.
Day visitors: Yes · Sauna: Yes · Tattoos: Not allowed · Payment: Cards acceptedOdawara · There is a rooftop outdoor bath in addition to indoor tubs.
Day visitors: Yes · Sauna: YesYokohama · Visitors described an outdoor black-water bath with both hot and warm sections.
Price: ¥1,000 · Day visitors: Yes · Sauna: YesAtsugi · Multiple visitors describe a rooftop outdoor bathing area with several tubs (2026-05 to 2026-08).
Day visitors: Yes · Sauna: Yes · Free-flowing (kakenagashi): YesYokohama · The facility had an open-air outdoor bath area, unusual for the region.
Price: ¥990 · Day visitors: Yes · Sauna: YesSagamihara · Multiple reviewers described an outdoor bathing area with several pools including a source-heated bath, rock bath, and jar baths.
Price: ¥950 · Day visitors: Yes · Sauna: Yes · Tattoos: Not allowedHakone · The facility has an outdoor bath area with mountain views, described as having up to three tubs.
Price: ¥1,250 · Day visitors: Yes · Sauna: NoYokosuka · Multiple visitors described an open-air bath overlooking the harbor and ferries.
Price: ¥1,100 · Day visitors: Yes · Sauna: Yes · Tattoos: Not allowedChigasaki · Multiple reviewers describe a large outdoor bath area with jar baths and other pools.
Day visitors: Yes · Sauna: Yes · Payment: Cards acceptedFujisawa · A cave-concept bath open to sea breeze with an ocean view directly in front was described.
Day visitors: Yes · Sauna: Yes · Tattoos: Not allowedYokohama · Reviewers described a small outdoor bath as part of the communal baths.
Price: ¥1,500 · Day visitors: Yes · Sauna: Yes · Tattoos: Not allowedHadano · The facility has an outdoor bath, recently renovated with new gravel and previously a cypress tub.
Day visitors: Yes · Sauna: YesSagamihara · Reviewers repeatedly describe a black hot-spring outdoor bath with a large TV.
Day visitors: Yes · Sauna: Yes · Tattoos: Not allowedSagamihara · Reviewers repeatedly praised the outdoor rock bath as the highlight of the facility.
Price: ¥1,100 · Day visitors: Yes · Sauna: YesYamato · Multiple visitors describe a rooftop outdoor bath with several types (2026).
Day visitors: Yes · Sauna: Yes · Tattoos: Not allowedMinamiashigara · Multiple reviewers from 2026 describe a forest-surrounded outdoor bath with lukewarm water around 38°C.
Price: ¥2,400 · Day visitors: Yes · Sauna: YesYokohama · There is an open-air bath, though one visitor noted it is roofed and lacks an open feeling while others enjoyed it (2026).
Day visitors: Yes · Sauna: Yes · Tattoos: Not allowedZama · Multiple outdoor bath types including a waterfall bath, herbal bath, and natural spring black-water bath were reported.
Price: ¥900 · Day visitors: Yes · Sauna: Yes · Free-flowing (kakenagashi): PartlyEbina · Visitors described an outdoor area with jar baths, rock baths, and a foot bath, sometimes nearly empty on weekdays.
Price: ¥1,100 · Day visitors: Yes · Sauna: YesHakone · Reviewers describe several varied outdoor baths, from 2026-04 to 2026-06.
Price: ¥1,650 · Day visitors: Yes · Sauna: Yes · Tattoos: Not allowedYugawara · The facility has an outdoor bath, though it is largely enclosed by walls and roofed.
Price: ¥1,100 · Day visitors: Yes · Sauna: NoYokohama · The facility has an outdoor bath and outdoor rest/air-bathing area used after the sauna.
Price: ¥1,100 · Day visitors: Yes · Sauna: Yes · Payment: Cash onlySagamihara · The facility has an outdoor bath praised for its mountain view and sunset.
Price: ¥780 · Day visitors: Yes · Sauna: Yes · Free-flowing (kakenagashi): YesOdawara · Multiple reviewers described enjoying the open-air (rotenburo) bath with varied seating and water temperatures.
Price: ¥1,300 · Day visitors: Yes · Sauna: YesYokosuka · There is an outdoor bath area, described as spacious but enclosed by walls with no view.
Price: ¥1,250 · Day visitors: Yes · Sauna: YesYamakita · An outdoor bath exists but several reviewers in 2026 noted debris or poor drainage in it.
Day visitors: Yes · Sauna: No · Tattoos: AllowedYokohama · An outdoor bath surrounded by bamboo is mentioned repeatedly, sometimes lit up at night.
Day visitors: Yes · Sauna: Yes · Free-flowing (kakenagashi): Yes · Tattoos: Not allowedYokohama · An outdoor bath area exists, though one 2026 visitor felt it was on the small side.
Day visitors: Yes · Sauna: YesYugawara · Multiple reviewers across seasons described enjoying the outdoor bath.
Price: ¥1,300 · Day visitors: Yes · Sauna: No · Payment: Cash onlyKiyokawa · A small outdoor bath is present, described by several as hotter than the indoor bath and limited in capacity.
Price: ¥500 · Day visitors: Yes · Sauna: Yes · Free-flowing (kakenagashi): NoYokohama · An outdoor bathing area with walking bath, herbal bath and other tubs existed.
Price: ¥1,400 · Day visitors: Yes · Sauna: YesYokohama · Reviewers describe a half-open-air (han-roten) black-water bath in addition to indoor tubs.
Sauna: Yes · Tattoos: AllowedYokohama · Visitors from 2026 consistently describe outdoor bath areas on both the standard and Royal sides, though tub size and number vary by course.
Price: ¥570 · Day visitors: Yes · Sauna: Yes · Tattoos: AllowedHakone · Multiple outdoor bathing pools are available alongside the indoor baths.
Price: ¥1,500 · Day visitors: Yes · Sauna: YesKawasaki · A semi-open-air (han-roten) bath was a regular feature noted across many years of reviews.
Price: ¥500 · Sauna: Yes · Tattoos: AllowedYamakita · Reviewers described a small outdoor bath in addition to the indoor bath.
Price: ¥600 · Day visitors: Yes · Sauna: Yes · Tattoos: AllowedYokohama · An outdoor bath with rotating medicinal (yakuyu) water was consistently reported from 2024 to the facility's closing in 2025.
Price: ¥550 · Day visitors: Yes · Sauna: Yes · Tattoos: AllowedYokohama · An outdoor bath area with jar-shaped tubs and carbonated water is present.
Price: ¥570 · Day visitors: Yes · Sauna: Yes · Tattoos: AllowedKawasaki · Reviewers across 2025-2026 describe an outdoor bath with black (kuroyu) water, reached by a small staircase.
Price: ¥570 · Day visitors: Yes · Sauna: Yes · Payment: Cards & QR acceptedMiura · The facility had an outdoor bath with ocean views, reported across 2023 and 2024 reviews.
Day visitors: Limited hours · Sauna: YesYokohama · Reviewers across years describe an outdoor rotenburo bath alongside the indoor baths.
Day visitors: Yes · Sauna: Yes · Tattoos: Allowed · Payment: Cards & QR acceptedYokosuka · Reviewers across years describe a small outdoor bath kept around 42°C even in winter.
Price: ¥570 · Day visitors: Yes · Sauna: Yes · Tattoos: AllowedNakanoyu ▲
Yokohama · An outdoor bath was frequently praised, but multiple reviews note it existed only on the men's side, with women's side having an indoor rock bath instead.
Price: ¥550 · Day visitors: Yes · Sauna: NoKawasaki · Reviewers across 2023-2026 consistently describe an outdoor natural hot-spring bath and adjoining cold outdoor bath.
Price: ¥570 · Day visitors: Yes · Sauna: YesYokohama · Reviewers across 2024-2026 consistently describe an open-air outdoor bath section, sometimes with a roofless area and seating.
Price: ¥570 · Day visitors: Yes · Sauna: Yes · Tattoos: AllowedKawasaki · Visitors consistently mention an outdoor or semi-outdoor bath area from 2024 through 2026.
Day visitors: Yes · Sauna: Yes · Tattoos: AllowedKawasaki · Multiple visitors from 2024 to 2026 describe a small but atmospheric outdoor bath, sometimes with a rock garden setting.
Price: ¥550 · Day visitors: Yes · Sauna: Yes · Tattoos: AllowedYokohama · Visitors across many years describe a small open-air bath open to the sky.
Day visitors: Yes · Sauna: YesFujisawa · Reviewers from 2025-2026 described a small outdoor bath alongside the main indoor tub.
Price: ¥570 · Day visitors: Yes · Sauna: Yes · Tattoos: AllowedKawasaki · An outdoor bath area is available, described as pleasant for open-air relaxation across multiple years.
Price: ¥550 · Day visitors: Yes · Sauna: YesKawasaki · An outdoor bath (mainly on the women's side) exists but was reported as closed or opening irregularly in 2022-2025.
Price: ¥570 · Day visitors: Yes · Sauna: YesHakone · Reviewers describe a semi-outdoor (roofed) private bath facing a bamboo grove and river.
Price: ¥1,500 · Day visitors: Yes · Free-flowing (kakenagashi): YesKawasaki · An open-air bath (rotenburo), roofless with a bench, is present on the women's side.
Price: ¥550 · Day visitors: Yes · Sauna: YesHakone · Reviewers from 2023-2026 consistently described two outdoor baths.
Price: ¥2,000 · Day visitors: Yes · Sauna: YesKawasaki · Visitors from 2020 to 2023 repeatedly mention an outdoor bath (rotenburo) as a highlight of this sento.
Sauna: YesZama · Reviewers from 2019 to 2023 describe several outdoor bath pools, some spacious and some smaller.
Price: ¥800 · Day visitors: Yes · Sauna: Yes · Free-flowing (kakenagashi): PartlyHakone · The facility has an outdoor bath, mentioned consistently from 2023 to 2026.
Price: ¥1,500 · Day visitors: Yes · Sauna: YesHakone · A 2023 review mentioned an outdoor bath as part of the large communal bath.
Sauna: YesHakone · A 2024 review described a semi-outdoor bath in addition to the indoor bathing hall.
Day visitors: Staying guests onlyHakone · A reviewer described a separate outdoor bath with its own spring analysis.
Day visitors: YesYugawara · A visitor in 2026 reported multiple outdoor baths.
Day visitors: Yes · Sauna: YesAlso in Kanagawa
