The Japan Weather Association (JWA) has projected that the number of typhoons approaching the Japanese archipelago in 2026 will be around normal to above normal, centered on August, and that with a likely shift toward El Niño conditions, autumn will call for caution over the approach of well-developed typhoons. Because this window overlaps with summer’s peak selling season, hotels that depend on outdoor activities are the most exposed to weather risk. By contrast, properties well-equipped with in-house experiences that can be completed indoors — large communal baths, saunas, indoor pools — find it easier to preserve their stay value even in bad weather. This article reads the occupancy-supporting effect of this “indoor completeness” from the perspective of growth potential, using segment-level room occupancy rates and review tags.

2026 Typhoon Outlook — More Approaches in August, “Developed Typhoons” to Watch in Autumn

According to the typhoon outlook the Japan Weather Association published in May 2026, the number of typhoons approaching the Japanese archipelago is “expected to be around normal to above normal, centered on August.” Furthermore, 2026 is seen as likely to shift toward El Niño conditions by summer, and it has been noted that in autumn, with typhoons forming farther to the southeast away from Japan, they may travel over the sea for longer and approach in a more developed state. In other words, this will be a year to prepare not only for the “number” of approaches but also for the “intensity” of each individual typhoon.

This forecast matters for accommodation demand because August through September — the main battleground for typhoons — coincides with the season when leisure-oriented hotels draw the most demand all year. The period when weather is most likely to turn and the period when ryokan and resorts earn the most overlap — and here lies the significance of raising “indoor completeness,” which keeps stay value intact even in bad weather. That is because hotels with a deep set of experiences that do not depend on the outdoors can absorb the erosion of leisure demand caused by typhoons within their own walls and turn it into occupancy support. We examine how much weather-resilient hotels can stabilize occupancy in El Niño’s Rainy Summer: The Opportunity for Weather-Resilient Hotels, which verifies the occupancy stability of indoor-complete properties.

Occupancy Structure by Segment — Leisure Spikes in August, Business Steady Year-Round

According to the Japan Tourism Agency’s “Overnight Travel Statistics Survey,” the 2025 room occupancy rate (annual, preliminary) was 61.8% overall, and by segment: 38.4% for ryokan, 56.9% for resort hotels, 75.3% for business hotels, and 74.2% for city hotels. On an annual-average basis, urban types such as business and city hotels are high, while leisure types such as ryokan and resorts are relatively low. This is the flip side of the leisure segment’s strongly seasonal demand structure.

Looking at the swing driven by season makes this structure even clearer. The chart below shows the standard pattern of monthly occupancy by segment; ryokan and resorts jump sharply in August. Ryokan rise from the low-30% range in their weakest month to about 48% in August, and resorts concentrate to about 72%. By contrast, business and city hotels move in the 70–80% range throughout the year and show no August surge. In short, leisure-type hotels condense their demand into “the single point of August,” and the weather in this month exerts large leverage on annual revenue.

Source: Standard pattern of monthly occupancy by segment charted from the Japan Tourism Agency’s “Overnight Travel Statistics Survey.” Prepared by the HotelBank Editorial Team.

The actual weight of this August peak also shows up in the monthly results of REITs with a strong resort-operation component. Japan Hotel REIT Investment Corporation (8985) recorded 88.1% room occupancy, an ADR of about ¥25,700, and RevPAR of about ¥22,600 for August 2025 — the highest levels of the year on all counts. August is the month when resorts can simultaneously achieve their highest rates and highest occupancy, and precisely for that reason, a setup that can absorb weather risk indoors in this month holds significant potential as revenue support.

Occupancy Resilience by Segment as Seen in Listed REITs

Comparing the latest operating results of listed hotel REITs side by side (May 2026, each company’s monthly published figures) reveals the character of occupancy that differences in segment mix produce. Invincible Investment Corporation (8963), centered on urban business hotels, posted 84.9% occupancy; Japan Hotel REIT Investment Corporation (8985), a mix of resort and urban, 84.0%; and Hoshino Resorts REIT Investment Corporation (3287), mainly leisure and resort, 80.1%. All maintained flat-to-slightly-up occupancy year on year, showing that baseline demand is solid regardless of segment.

Source: Prepared by the HotelBank Editorial Team from each REIT’s monthly operating data (May 2026).

What deserves attention here is that while leisure/resort-focused properties fall short of urban types in absolute occupancy level, they achieve high added value in ADR and RevPAR. Hoshino Resorts REIT’s ADR is about ¥23,000 and Japan Hotel REIT’s about ¥21,400, both exceeding Invincible’s (about ¥15,200), which is centered on urban business hotels. Because a high-rate leisure stay contributes more revenue per night, the impact of a single typhoon-driven cancellation is also larger. That is exactly why whether a property can provide an in-house “reason to stay” even in bad weather becomes the key to not letting this high-rate demand slip away.

Reading “Indoor Completeness” from Reviews — Onsen-Hopping, Sauna, Indoor Pool

So what specific elements make up the “indoor completeness” that keeps a stay enjoyable even in bad weather? The HotelBank Editorial Team ran NLP analysis on guest reviews and tallied the properties with high mention rates over the past 24 months for three representative in-house experiences — onsen-hopping (a rich variety of baths and bath types), saunas, and indoor pools. Each of these can fill a guest’s stay-time regardless of the weather, allowing a property to propose ways to spend the day indoors even when a typhoon makes going out impossible.

Onsen-Hopping / Variety of Baths

Properties where guests can enjoy multiple baths or a wide range of hot springs indoors can offer a “tour the property” experience even in the rain. The facilities with high mention rates line up with large onsen-resort ryokan and hotels.

Source: HotelBank Editorial Team research (NLP analysis, past 24 months, top onsen-hopping-tag mention rates; N = review count noted per facility).

Sauna

Against the backdrop of the recent “totonou” (getting in the zone) demand, saunas are gaining presence as an element that raises stay value regardless of the weather. By mention rate, at specialized facilities that make the sauna the star, over 50% of reviews touch on the sauna, and even at urban business hotels it draws heavy mentions as a differentiator. It is precisely during typhoons, when outdoor leisure is difficult, that it functions as a refresh experience completed indoors. The pattern of urban business hotels overtaking onsen ryokan in review evaluation is analyzed in detail in Nationwide Top 30 Hotels Renowned for Saunas.

Source: HotelBank Editorial Team research (NLP analysis, past 24 months, top sauna-tag mention rates).

Indoor Pool

The pool is a symbol of the leisure resort, but the outdoor pool is also the facility most affected by typhoons. Many of the facilities with high mention rates here have indoor or heated pools, enabling family stays regardless of the weather. Large facilities in resort areas such as Okinawa, Beppu, and Shirahama line up, and one can read a structure in which the depth of the pool experience underpins stay satisfaction in bad weather.

Source: HotelBank Editorial Team research (NLP analysis, past 24 months, top indoor-pool-tag mention rates).

Distribution of Indoor-Complete Leaders

Plotting the hotels that draw high mentions for this “indoor completeness” on a map, they spread nationwide — from the onsen and resort areas of western and southern Japan that are most exposed to typhoons, to the large onsen hotels of Tohoku and Hokkaido. What they share is that they bundle multiple in-house experiences such as large communal baths, onsen-hopping, saunas, and indoor pools. Even when bad weather disrupts a travel plan, the depth to build an entire day within the property alone leads to occupancy resilience.

Source: HotelBank Editorial Team research.

Growth Potential — An In-House “Reason to Stay” for the Weather-Risk Era

The 2026 typhoon outlook is two-tiered: more approaches in August and a tendency toward developed typhoons in autumn. For leisure-oriented hotels, this period is the peak selling season when the year’s largest demand gathers, and weather risk and revenue opportunity peak at the same time. Here lies an upside, regardless of segment, in deepening indoor-complete experiences.

Ryokan and resorts have room to capture the erosion of leisure demand caused by typhoons by clearly positioning existing in-house assets such as onsen-hopping, saunas, and indoor pools as “ways to enjoy the stay even in bad weather.” The higher a facility’s existing drawing power and rates, the greater the effect of this approach in defending revenue per night. For business and city hotels too, the move to push saunas and large communal baths as differentiators holds the potential to add “weather-proof refreshment” as value to an urban stay.

The weather cannot be controlled, but the quality of time spent indoors can be designed. It is precisely in the season when typhoon approaches increase that hotels able to offer a stay that “satisfies even when you can’t go outside” are likely to quietly support occupancy. Indoor completeness is a new competitive axis for hotels in the weather-risk era, and its headroom extends across segments.