Mount Fuji climbing season: the exact open dates

Mount Fuji is only open for official climbing roughly from early July to early September each year — outside that window the mountain huts close, emergency services scale back, and the prefectures actively discourage summit attempts, even though the mountain itself is visible and photographable year-round. The exact open and close dates shift by a few days from year to year and are set separately by Yamanashi and Shizuoka prefectures, so the only reliable source for this year’s precise dates is the current-year announcement from those prefectures, not a date carried over from a previous season’s article.

Why the season is this short

Mount Fuji sits at an altitude where summer is the only stretch with consistently passable conditions on the upper trail sections — snow and ice linger into early summer and can return by early autumn, and high winds are common outside the core months. The prefectures set the season around this weather window rather than a fixed calendar date, which is why the exact open and close days move slightly year to year instead of landing on the same date every time.

Four trails, not one mountain path

Climbers reach the summit via one of four named trails — Yoshida, Subashiri, and Gotemba on the Shizuoka and Yamanashi sides, and Fujinomiya from the south — each with its own starting elevation, hut network, and typical climbing time. The Yoshida Trail, reached from the Yamanashi side, is the most heavily used and the one most frequently covered in English-language guides, but it is not the only option, and trail choice changes both the difficulty and the crowding you’ll encounter.

Why the rules keep changing

In recent years, Yamanashi and Shizuoka have both introduced measures aimed at reducing overcrowding and so-called “bullet climbing” — attempting the summit overnight without a hut stop — including entry fees, daily climber caps, and overnight gate closures on the busiest trail. These measures have been adjusted from year to year since they were introduced, which is exactly why a rule you read about in an older article may not match what’s in effect this season.

What to verify before you commit to dates

Before booking flights or huts around a specific climbing window, confirm three things directly with the current prefectural sources: the official open and close dates for the trail you plan to use, whether an entry fee or reservation system applies that season, and whether any daily climber cap could affect same-day availability. Last checked: September 2026 — treat any specific figure from this article as a starting point for your own verification, not a substitute for it.

Booking a mountain hut

Reaching the summit for sunrise typically means an overnight stop at a mountain hut partway up the trail, and the most popular huts on the Yoshida Trail sell out weeks in advance during peak weekends in July and August. Huts on the less-used trails, like Fujinomiya or Gotemba, tend to have more late availability, which is worth weighing against the extra travel time to reach those trailheads from Tokyo.

Weather on summit day

Even inside the official season, weather at the summit can differ sharply from conditions at the trailhead — temperatures near freezing, strong wind, and sudden cloud cover are all common regardless of how clear it looked from the base. Climbers who treat the forecast at the trailhead as the forecast for the summit are the ones most often caught unprepared near the top.

Reaching the trailhead from Tokyo

Most climbers reach the Yoshida Trail’s fifth station by direct bus from Tokyo or Kawaguchiko during the climbing season, with additional shuttle services often required once vehicle restrictions are in place on the access road. The exact bus schedule and any shuttle requirement are published separately each season and are worth checking alongside the trail’s open dates, not assumed from a previous year’s arrangement.

Season dates at a glance

Trail	Typical season window	Access side
Yoshida	Early July–early September	Yamanashi
Subashiri, Gotemba	Similar window, confirm yearly	Shizuoka
Fujinomiya	Similar window, confirm yearly	Shizuoka

Staying connected above the tree line

Trailhead wifi and hut connectivity are limited and inconsistent, and most of the climb happens well outside any building’s signal range — checking the latest weather update, confirming a hut reservation, or messaging someone about a delayed descent all depend on your own phone’s connection, not a network you can’t count on partway up a mountain. Install the Japan eSIM app at home before you fly and activate it once you land, so your data is already working by the time you reach the trailhead; see plan sizes and the setup guides for a couple of minutes’ work before departure.

The question behind the question

Most people searching for Fuji’s climbing dates aren’t just asking when the mountain opens — they’re asking whether their travel dates will actually align with a safe, supported climb. The honest answer is to treat the season as a target window rather than a guarantee: build flexibility into your itinerary where you can, and confirm the exact dates, fees, and any reservation requirement against the current-year prefectural announcement before locking in flights or huts.