Nozawa Onsen (Nozawa) weather in September

September in Nozawa Onsen: warm, soaked, with clean air — not the time — 19 rainy days.

Updated September 2026 · climate normals from ERA5 reanalysis

Nozawa Onsen🇯🇵 Japan · Mainland Japan · Ski10
  1. 86Jan
  2. 89Feb
  3. 75Mar
  4. 34Apr
  5. 22May
  6. 19Jun
  7. 13Jul
  8. 17Aug
  9. 10Sep
  10. 15Oct
  11. 47Nov
  12. 80Dec

#12 of 12 months in Nozawa Onsen · #1413 of 1413 destinations to visit in September · comfort 10/100 (tier F)

Days
24°C
Nights
17°C
Wet days
19
Sun
8 h
Humidity
88%
Daylight
12 h
Nozawa Onsen, Japan
Photo: E-190 · CC BY-SA 3.0

Traveller notes on Nozawa Onsen in September

Nozawa Onsen-forum threads on a September visit describe mid-month temperatures as still capable of running warm, posters citing readings under thirty degrees Celsius even this late in summer. Regulars call hiking, a zip line and summer-season activities all real September options, the village genuinely active beyond its winter reputation. Posters recommend the thirteen free public onsens as a standing local highlight regardless of season, several regulars calling them clean, safe and worth trying more than one. Regulars call artisan shop browsing along with eating and drinking a real way to fill a quieter afternoon between activities. Posters recommend planning a return visit for autumn leaves specifically if the timing allows, koyo color considered a genuine highlight later in the season. The record: 24.4C days feeling like 26C, 16.9C nights, an extraordinarily high 228.1mm across over 19 days and 76 percent humidity.
NozawaOnsenSeptemberRegular · September · 1 month ago · Read more on Tripadvisor ↗

Other months in Nozawa Onsen

Nozawa Onsen-forum reviews describe it as a genuine must-see in any season, posters calling the village magical once real winter conditions settle in though November itself sits ahead of that. Regulars call the free public bath houses scattered through the village a real highlight regardless of month, several posters naming this the town's defining feature even for a non-skier. Posters recommend a stay here even without hitting the slopes, regulars calling the cozy streets and local food genuinely worth the trip alone. Regulars call November a real transition month, several threads noting conditions can turn wet and unsettled well before any reliable accumulation arrives at village elevation. Posters recommend checking local booking services well ahead, several regulars describing accommodation here as tightening up fast once the season nears. The record: 11.9C days feeling like 10C, 2.9C nights, an extraordinarily high 159.9mm across over 18 days and 87 percent humidity.
NozawaOnsenNovemberRegular · November · 1 month ago · Read more on Tripadvisor ↗
Nozawa Onsen-forum reviews on a summer visit describe the public bathhouses as genuinely open and worth using year-round, posters calling the ritual just as rewarding in August despite the heat outside. Regulars call the village considerably quieter than winter, lift operations closed but real summer alternatives filling the gap: hiking trails, a zip line and artisan shops. Posters describe the mountain air as offering relief from valley heat, though real humidity and afternoon rain remain standing features. Regulars recommend a soak in one of the free baths regardless of season, the onsen culture the real draw independent of any outdoor activity. Posters call real breathable layers sensible given how sticky the air turns by midday. Regulars call the town a genuine year-round destination, this stretch trading winter's draw for a quieter, greener version. The record: 28.3C days feeling like 33C, 20.6C nights, an extraordinarily high 235.9mm across over 22 days and 87 percent humidity.
NozawaOnsenAugustRegular · August · 1 month ago · Read more on Tripadvisor ↗
Nozawa Onsen-forum threads on early March snow describe conditions as generally still solid by seasonal average, posters calling upper slopes reliably holding good powder even as the official competitive season winds down. Regulars call the resort's own season boundary early March, spring skiing kicking in shortly after with softer groomers. Posters describe lower-mountain snow as noticeably wetter and heavier by afternoon, an early start recommended before the day warms. Regulars call a run of fresh snowfall mid-visit genuinely common even this late, one poster reporting two full days of accumulation salvaging an otherwise so-so week. Posters recommend the village's public onsen baths as a genuine highlight regardless of snow quality, several free and open in town. Regulars call March a real value window, lift tickets and lodging cheaper than peak season. The record: 7.8C days feeling like 6C, -1.7C nights, an extraordinarily high 151.5mm across over 18 days and 82 percent humidity.
NozawaOnsenMarchRegular · March · 1 month ago · Read more on Tripadvisor ↗
December at Nozawa Onsen is a question of which half. The first half can bring limited operations or none at all if the snow has not come; the resort opened on the 13th one recent year, and by the third week of December most people are skiing, with cover down to village level. Late December into early January is usually enough, though regulars are honest that warmer winters mean it will not be the powder people picture, and that the top of the season is late January to early March. The village's own consolation is the onsen: the semi-rotenburo at Furusato-no-yu runs 10am to 8pm daily except Thursdays. The record: 5.2C days that feel like 2C, -3.1C nights, 103.1cm of snow, 23 precipitation days and 6.5 hours of sun.
ByTheThirdWeek · December · 1 month ago · Read more on Tripadvisor ↗

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Nozawa Onsen climate normals — September

Daytime high24°C / 76°F🌤 warm
Nighttime low17°C / 62°F
Feels like (high)27°C / 81°F
Rainfall228 mm / 9 in⛈ soaked
Rainy days19 days
Humidity88%💦 very humid
Dew point18°C / 64°F
Sunshine8 h/day
Daylight12.4 h
Wind9 km/h / 6 mph
Air quality (US AQI)38🍃 good

Monthly averages from ERA5 reanalysis. AQI is the mean US Air Quality Index for the month.

Crowds in Nozawa Onsen in September

How busy the place itself is — school and mass holidays, the months an editor tagged, and how sought-after the weather makes them. Never part of the comfort score.

BusyToro Matsuri (Lantern Festival), school holidays in 3 of the markets that fill it(estimated)

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Peak crowdsBusyShoulder seasonQuiet

Best months for Nozawa Onsen's weather

Ranked by this destination's own climate comfort score across the year — a different thing from how busy it gets (see Crowds above).

Toughest weatherNozawa Onsen's weather peaks December–February.

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Best weatherFair weatherToughest weather

What's on in Nozawa Onsen in September

Recurring seasonal events, natural spectacles, closures and holidays — curated and sourced.

  • Opening

    Summer gondola season

    15 Jul – 25 Oct · usuallySummer season opens

    The Nagasaka gondola reopens for walkers from mid-July, with a picnic area, guided alpine-flower walks and a few evening stargazing rides from the top station. Source ↗

  • Festival

    Toro Matsuri (Lantern Festival)

    8–9 SepLights & fireCrowded

    The Yuzawa Shrine festival: on the night of 8 September lantern processions climb to the shrine for lion and court dances, and more than a thousand fireworks go up over the village. Source ↗

What's on around the world in September →

Nearby, and something's on

Within 300 km of Nozawa Onsen — a day trip or a short hop — with something on this month. Never part of the comfort score.

Where is Nozawa Onsen?

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Nozawa Onsen in September — FAQ

Is September a good time to visit Nozawa Onsen?
September in Nozawa Onsen: warm, soaked, with clean air — not the time — 19 rainy days. It ranks #12 of 12 months for Nozawa Onsen on SeasonMap's comfort score (10/100).
What is the weather like in Nozawa Onsen in September?
In September, Nozawa Onsen averages a daily high of 24.4°C and a low of 16.9°C, with about 228.1 mm of rain over roughly 19.2 rainy days.
What is the air quality in Nozawa Onsen in September?
Nozawa Onsen has a mean US Air Quality Index of about 38 in September.

Within 300 km: Hakuba's High trails and huts open around 1 Jul – 15 Oct, and Matsumoto's Kamikochi open season around 17 Apr – 15 Nov.