Where to Go for Great Weather
Japan · Nagano Prefecture · September

Nagano Prefecture in Septemberhow the month reads

September is a solid shoulder month for Nagano Prefecture inside Japan, with warmer than the yearly mean by 8.8°C. The safety bulletins below apply.

Rank
6 of 12
Score
60/100
September match
60/100

Free-tier default preferences.

What’s open · September

Things to do in Nagano Prefecture in September

  • Closed
    Skiing in Hokkaido

    Hokkaido's summers are cool and dry rather than hot and humid, which is a different reason to go and not a skiing one

    Sources: adventure-life.com, kimkim.com

Opening seasons are checked by hand against the operators and parks themselves, not derived from the climate figures on this page. Last reviewed 2026-08-28. Dates move — confirm before you book.

  • Temperature
    24°C
    +8.8°C vs. yearly mean
  • Month rank
    6 of 12
    for Nagano Prefecture
  • Best months
    January · May · June
    highest regional score
12-month temperature · Nagano Prefecture

September in context

Temperature°C
Temperature · 12-month climatologyNagano Prefecture, Japan — September. Average daytime high by month in °C. Lowest in January (1.9), highest in August (27.4). Monthly means: 1.9, 3.2, 8.4, 14.3, 19.4, 22.3, 26.2, 27.4, 23.7, 17.1, 11.2, 4.5.
View data table
MonthAverage daytime high (°C)
January1.9
February3.2
March8.4
April14.3
May19.4
June22.3
July26.2
August27.4
September23.7
October17.1
November11.2
December4.5
Safety · 6 governments

What the governments say about Japan

Combined advisory · most-cautious-wins
Exercise normal precautions
Highest level across 6 governments · Advisory last changed
See breakdown by country
AU

Exercise normal precautions

Changed Checked www.smartraveller.gov.au
CA

Exercise normal precautions

Changed Checked travel.gc.ca
DE

Exercise normal precautions

Changed Checked www.auswaertiges-amt.de
UK

Exercise normal precautions

Changed Checked www.gov.uk
US

Exercise normal precautions

Changed Checked travel.state.gov

Parts of Japan carry a higher advisory — up to level 4, "Do not travel". The governments concerned name a region rather than a boundary, so the carve-out is not drawn on the map and is not reflected in the combined level above. Follow the source links for where it applies.

← Earlier
August

27°C in Aug

Later →
October

17°C in Oct

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Plan a September trip to Nagano Prefecture.

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