Cool
Average highs are around 14°C, so pack for cooler days.
December verdict
Mishima Islands, Japan in December
Weather score24Poor
Poor for holiday weather
Average highs are around 14°C, so pack for cooler days. Sunshine averages 4h per day, so this is not one of the brighter months. Rainfall averages 110mm, so some wet days are possible.
December weather
Monthly averages
Temp
14°C
Rain
110mm
Sun
4h
Sea
21°C
Weather score
24
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 110mm, so some wet days are possible.
Limited sun
Sunshine averages 4h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 21°C, so the water can feel cool.
Map
Weather map
Compare Mishima Islands, Japan with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December14°C average high
December is on the cooler side of Mishima Islands' year, useful if you prefer less intense daytime heat.
Warmest monthsJuly to September
This stretch sets the upper range for average daytime heat.
Rain
December110mm average rain
December is one of Mishima Islands' driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsJanuary to March, August, and October to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December4 hours average sun
December is below Mishima Islands' yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsJuly to August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
December21°C average sea
December is below Mishima Islands' yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJuly to September
Sea temperatures are usually near 27°C in this stretch, so swimming comfort is at its strongest.
Weather score
December24 weather score
December scores below Mishima Islands' yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJuly to October
These months have the strongest weather score in the monthly averages.
