Cool
Average highs are around 11°C, so pack for cooler days.
April verdict
Karuizawa, Japan in April
Weather score27Poor
Poor for holiday weather
Average highs are around 11°C, so pack for cooler days. Sunshine averages 5.8h per day, enough for a balanced month. Rainfall averages 102mm, so some wet days are possible.
April weather
Monthly averages
Temp
11°C
Rain
102mm
Sun
5.8h
Weather score
27
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 102mm, so some wet days are possible.
Some sun
Sunshine averages 5.8h per day, enough for a balanced month.
Map
Weather map
Compare Karuizawa, Japan with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
April11°C average high
April is close to Karuizawa's yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
April102mm average rain
April sits near Karuizawa's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
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
April5.8 hours average sun
April is brighter than Karuizawa's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsMarch to May
This stretch has the strongest sunshine in the monthly averages.
Weather score
April27 weather score
April 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.
