Cool
Average highs are around 8°C, so pack for cooler days.
December verdict
Aso, Kumamoto, Japan in December
Weather score22Poor
Poor for holiday weather
Average highs are around 8°C, so pack for cooler days. Sunshine averages 3.8h per day, so this is not one of the brighter months. Rainfall averages 60mm, which is relatively low for holiday planning.
December weather
Monthly averages
Temp
8°C
Rain
60mm
Sun
3.8h
Sea
16°C
Weather score
22
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 60mm, which is relatively low for holiday planning.
Limited sun
Sunshine averages 3.8h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 16°C, so the water can feel cool.
Map
Weather map
Compare Aso, Kumamoto, Japan with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December8°C average high
December is on the cooler side of Aso's year, useful if you prefer less intense daytime heat.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
December60mm average rain
December is one of Aso's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsJanuary to April and October to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December3.8 hours average sun
December is below Aso's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsApril to May, July to August, and October
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
December16°C average sea
December is below Aso's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJuly to September
Sea temperatures are usually near 25°C in this stretch, so swimming comfort is at its strongest.
Weather score
December22 weather score
December scores below Aso's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJuly to September
These months have the strongest weather score in the monthly averages.
