What's on in Karuizawa, Japan through the year

Karuizawa, Japan has 6 curated events through the year — 1 natural spectacle, 1 holiday, 3 seasons and 1 seasonal opening. The ones to plan around: Autumn colour (October) and First lifts in Japan (November). July to August are its peak-crowd months.

Updated September 2026 · every event curated and sourced · dates for 2026 where they are announced, the usual window where they are not

Best time to visit Karuizawa: weather, crowds and notes →

Karuizawa events and crowds by month

MonthWhat startsCrowds
JanuaryDeep winter quietBusy
FebruaryQuiet
MarchBusy
AprilBusy
MayBusy
JuneTsuyu and the fogBusy
JulySummer seasonPeak crowds
AugustObonPeak crowds
SeptemberBusy
OctoberAutumn colourShoulder season
NovemberFirst lifts in JapanShoulder season
DecemberBusy

Busy — Winter break (fuyuyasumi) in Japan, school holidays in 5 of the markets that fill it

  • Season

    Deep winter quiet

    10 Jan – 28 FebOff-season shutdownClosures

    A good share of the summer-house restaurants and galleries shut after New Year and do not reopen until Golden Week. Cold, dry, clear, and largely closed.

Still on: First lifts in Japan (1 Nov – 31 Mar)

Quiet — school holidays in 2 of the markets that fill it, one of its worst months for weather

Nothing new starts in February.

Still on: Deep winter quiet (10 Jan – 28 Feb), First lifts in Japan (1 Nov – 31 Mar)

Busy — Spring break (haruyasumi) in Japan

Nothing new starts in March.

Still on: First lifts in Japan (1 Nov – 31 Mar)

Busy — Spring break (haruyasumi) in Japan, school holidays in 2 of the markets that fill it

Nothing new starts in April.

Busy — Golden Week in Japan

Nothing new starts in May.

Busy — school holidays in 3 of the markets that fill it, one of its best months for weather

  • Season

    Tsuyu and the fog

    10 Jun – 15 Jul · usuallyMonsoon

    At a thousand metres the rainy season is cloud sitting in the larches rather than downpours. The shops are quiet and the moss is why people who know come now.

Peak crowds — Summer season, Summer break (natsuyasumi) in Japan

  • Season

    Summer season

    15 Jul – 31 AugCrowdedBook early

    Tokyo's hot-weather escape since the 1880s, and the population multiplies for six weeks. Restaurants need booking, the outlet mall is full, and the expressway backs up on Friday evenings.

Still on: Tsuyu and the fog (10 Jun – 15 Jul (usually))

Peak crowds — Summer season, Obon

  • Holiday

    Obon

    13–16 AugNational holidayCrowded

    The peak of the peak. Second homes are all occupied, the bicycle lanes are busy, and a table anywhere decent needs to have been booked in spring. Source ↗

Still on: Summer season (15 Jul – 31 Aug)

Busy — school holidays in 3 of the markets that fill it, one of its best months for weather

Nothing new starts in September.

Shoulder season — school holidays in 3 of the markets that fill it, an ordinary month

  • Nature

    Autumn colour

    15 Oct – 10 Nov · usually

    The larch avenues and Kumoba pond turn from the end of October. The town is at its best and the day-trippers thin out after the first hard frost.

Shoulder season — an ordinary month

  • Opening

    First lifts in Japan

    1 Nov – 31 MarSki season

    The Prince resort makes snow in cold, dry air and usually opens on 1 November, weeks before anywhere else in Nagano has any. Short, groomed runs and a Tokyo day-trip crowd. Source ↗

Still on: Autumn colour (15 Oct – 10 Nov (usually))

Busy — Winter break (fuyuyasumi) in Japan, school holidays in 4 of the markets that fill it

Nothing new starts in December.

Still on: First lifts in Japan (1 Nov – 31 Mar)

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