Cool
Average highs are around 10°C, so pack for cooler days.
December verdict
Oki Islands, Japan in December
Weather score12Poor
Poor for holiday weather
Average highs are around 10°C, so pack for cooler days. Sunshine averages 2.6h per day, so this is not one of the brighter months. Rainfall averages 153mm, so some wet days are possible.
December weather
Monthly averages
Temp
10°C
Rain
153mm
Sun
2.6h
Sea
17°C
Weather score
12
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 153mm, so some wet days are possible.
Limited sun
Sunshine averages 2.6h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 17°C, so the water can feel cool.
Map
Weather map
Compare Oki Islands, Japan with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December10°C average high
December is on the cooler side of Oki 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
December153mm average rain
December sits near Oki Islands' yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsFebruary to May, August, and October to November
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December2.6 hours average sun
December is one of Oki Islands' cloudier months, so sunshine-led plans are less reliable.
Brightest monthsApril to May and August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
December17°C average sea
December is below Oki Islands' yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJuly to September
Sea temperatures are usually near 24°C in this stretch, so swimming comfort is at its strongest.
Weather score
December12 weather score
December is one of the weakest weather-score months, when the overall mix is less favourable than the rest of the year.
Best weather monthsJuly to September
These months have the strongest weather score in the monthly averages.
Hotels near Oki Islands, Japan
Marriott
Fairfield by Marriott Okayama Hiruzen HighlandManiwa, Okayama, Japan
Fairfield by Marriott Okayama TsuyamaTsuyama, Okayama, Japan
Fairfield by Marriott Hyogo Kannabe HighlandToyooka, Hyogo, Japan
Fairfield by Marriott Hyogo Tajima YabuYabu, Hyogo, Japan
Fairfield by Marriott Hiroshima SeraSera, Hiroshima, Japan
Yoruya, a Member of Design Hotels™Kurashiki shi, Japan