Mild
Average highs are around 21°C, so days are mild rather than hot.
September verdict
Kiso Valley, Japan in September
Weather score30Poor
Poor for holiday weather
Average highs are around 21°C, so days are mild rather than hot. Sunshine averages 4h per day, so this is not one of the brighter months. Rainfall averages 224mm, so showers are a real planning factor.
September weather
Monthly averages
Temp
21°C
Rain
224mm
Sun
4h
Weather score
30
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 224mm, so showers are a real planning factor.
Limited sun
Sunshine averages 4h per day, so this is not one of the brighter months.
Map
Weather map
Compare Kiso Valley, Japan with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September21°C average high
September sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
September224mm average rain
September is one of Kiso Valley's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to March and November to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September4 hours average sun
September is one of Kiso Valley's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsMarch to May
This stretch has the strongest sunshine in the monthly averages.
Weather score
September30 weather score
September scores below Kiso Valley's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJuly to September
These months have the strongest weather score in the monthly averages.
Hotels near Kiso Valley, Japan
Marriott
Matsumoto Jujo, a Member of Design Hotels™Matsumoto, Nagano, Japan
Fairfield by Marriott Gifu Takayama Shirakawa GoGifu, Japan
Fairfield by Marriott Gifu GujoGifu, Gifu, Japan
Fairfield by Marriott Gifu Seiryu Satoyama ParkGifu, Gifu, Japan
Fairfield by Marriott Gifu MinoGifu, Gifu, Japan
TIAD, Autograph CollectionNagoya, Aichi, Japan