Cool
Average highs are around 19°C, so pack for cooler days.
June verdict
Karuizawa, Japan in June
Weather score25Poor
Poor for holiday weather
Average highs are around 19°C, so pack for cooler days. Sunshine averages 4.4h per day, so this is not one of the brighter months. Rainfall averages 205mm, so showers are a real planning factor.
June weather
Monthly averages
Temp
19°C
Rain
205mm
Sun
4.4h
Weather score
25
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 205mm, so showers are a real planning factor.
Limited sun
Sunshine averages 4.4h 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
June19°C average high
June 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
June205mm average rain
June 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
June4.4 hours average sun
June 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
June25 weather score
June scores below Karuizawa's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJuly to August
These months have the strongest weather score in the monthly averages.
