Mild
Average highs are around 22°C, so days are mild rather than hot.
September verdict
Yamanakako, Minamitsuru-gun, Yamanashi, Japan in September
Weather score40Poor
Poor for holiday weather
Average highs are around 22°C, so days are mild rather than hot. Sunshine averages 3.8h per day, so this is not one of the brighter months. Rainfall averages 225mm, so showers are a real planning factor.
September weather
Monthly averages
Temp
22°C
Rain
225mm
Sun
3.8h
Sea
25°C
Weather score
40
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 225mm, so showers are a real planning factor.
Limited sun
Sunshine averages 3.8h per day, so this is not one of the brighter months.
Swimmable
Sea temperatures average 25°C, which can work for swimming but may feel fresh.
Map
Weather map
Compare Yamanakako, Minamitsuru-gun, Yamanashi, Japan with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September22°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
September225mm average rain
September is wetter than Yamanakako's yearly average, so flexible plans matter more.
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
September3.8 hours average sun
September is one of Yamanakako's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsJanuary to May, August, and December
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September25°C average sea
September is one of Yamanakako's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJuly to September
Sea temperatures are usually near 24°C in this stretch, so swimming comfort is at its strongest.
Weather score
September40 weather score
September sits close to Yamanakako's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.
