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Climate · Nozawa Onsen

Nozawa Onsen in September

Warm and wet, as the days shorten.

Typical weather, averaged over 30 years

September in Nozawa Onsen is warm: highs near 78°F, lows near 61°F. Rain falls on about four days a week, less often as the month goes on, and the days shorten by 51 minutes from the first week to the last.September in Nozawa Onsen is warm: highs near 26°C, lows near 16°C. Rain falls on about four days a week, less often as the month goes on, and the days shorten by 51 minutes from the first week to the last.

High
78°F26°Caverage
Low
61°F16°Caverage
Wet days
4a week · 64% of days
Daylight
12h 20mon average

Is September a good time to visit Nozawa Onsen?

Yes. September is one of Nozawa Onsen's best months (May to July, or September to October).

How we judge it: every month is scored on how close its typical high comes to the range from 70°F to 80°F, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.How we judge it: every month is scored on how close its typical high comes to the range from 21°C to 27°C, how mild its nights are, and how rarely it rains. The best months are the run of months that scores best.

How September sits in the year

week by week

Temperature

Highs near 78°F in September, against 37°F to 84°F through the year.Highs near 26°C in September, against 3°C to 29°C through the year.

Chance of a wet day

64% of days in September, against 49% to 83% through the year.

Cloud cover

62% cover in September, against 58% to 72% through the year.

Daylight

12h 20m in September, against 9h 40m to 14h 39m through the year.

Week by week, lightly smoothed, with September shaded. The olive line marks the best months. Hover or tap a week for its figures.

Either side

  1. August84°29°low 67°low 19°5 wet days a weekRain on about five days a week.
  2. September78°26°low 61°low 16°4 wet days a weekRain on about four days a week.
  3. October68°20°low 50°low 10°4 wet days a weekRain on about four days a week.

Where Nozawa Onsen sits, in September

Asia/Tokyo
this place
typical high in September 40°F4°C95°F35°C
Sunrise, mid-September
5:27 AMsets 5:56 PM
Above the sea
600 mlow-lying
Latitude
36.9°Nnorthern hemisphere
Nearest of ours
Karuizawa65 km south

The land around Nozawa Onsen, shaded by its typical high in September, the planning map's own layer. Hover the map for the figure at that spot; tap it on a phone. Clock times are local, for the 15th.

Elsewhere in Japan in September

high · low · wet days
See September on the planning mapThe whole year in Nozawa Onsen

Typical weather, averaged over 30 years (1995–2024), from the 11 km grid square nearest Nozawa Onsen. Temperatures are adjusted against 66 weather stations: daytime highs read about 3.1°F cold in the source data and are raised to match.Temperatures are adjusted against 66 weather stations: daytime highs read about 1.7°C cold in the source data and are raised to match. Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not. Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.

Daylight is calculated from latitude. Charts are lightly smoothed week to week; the figures in the table are not.

Source: Copernicus ERA5-Land reanalysis; cloud cover from NASA's MERRA-2 reanalysis, on a coarser grid of about 50 km. Contains modified Copernicus Climate Change Service information 2026; neither the European Commission nor ECMWF is responsible for any use of it. These are averages, not a forecast.