Mild
Average highs are around 23°C, so days are mild rather than hot.
July verdict
Karuizawa, Japan in July
Weather score38Poor
Poor for holiday weather
Average highs are around 23°C, so days are mild rather than hot. Sunshine averages 4.3h per day, so this is not one of the brighter months. Rainfall averages 207mm, so showers are a real planning factor.
July weather
Monthly averages
Temp
23°C
Rain
207mm
Sun
4.3h
Weather score
38
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 207mm, so showers are a real planning factor.
Limited sun
Sunshine averages 4.3h per day, so this is not one of the brighter months.
Map
Weather map
Compare Karuizawa, Japan with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
July23°C average high
July is one of Karuizawa's warmest months, with daytime heat above the yearly average.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
July207mm average rain
July is one of Karuizawa'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
July4.3 hours average sun
July is below Karuizawa's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsMarch to May
This stretch has the strongest sunshine in the monthly averages.
Weather score
July38 weather score
July scores above Karuizawa's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.
