Cool
Average highs are around 0°C, so pack for cooler days.
January verdict
Karuizawa, Japan in January
Weather score28Poor
Poor for holiday weather
Average highs are around 0°C, so pack for cooler days. Sunshine averages 5.1h per day, enough for a balanced month. Rainfall averages 34mm, which is relatively low for holiday planning.
January weather
Monthly averages
Temp
0°C
Rain
34mm
Sun
5.1h
Weather score
28
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 34mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 5.1h 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
January0°C average high
January has some of the coolest average daytime highs of the year, so pack for fresher conditions.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
January34mm average rain
January is one of Karuizawa's driest months, making outdoor days easier to plan than in wetter parts of the year.
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
January5.1 hours average sun
January sits close to Karuizawa's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsMarch to May
This stretch has the strongest sunshine in the monthly averages.
Weather score
January28 weather score
January 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.
