Cool
Average highs are around 3°C, so pack for cooler days.
December verdict
Poor for holiday weather
Average highs are around 3°C, so pack for cooler days. Sunshine averages 2.5h per day, so this is not one of the brighter months. Rainfall averages 93mm, so some wet days are possible.
Monthly averages
Temp
3°C
Rain
93mm
Sun
2.5h
Sea
12°C
Weather score
15
Poor
Cool
Average highs are around 3°C, so pack for cooler days.
Showers
Rainfall averages 93mm, so some wet days are possible.
Limited sun
Sunshine averages 2.5h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 12°C, so the water can feel cool.
Map
Compare Yagen Valley, Japan with nearby places by weather score, rain, sun, temperature, and swim conditions.
December3°C average high
December is on the cooler side of Yagen Valley's year, useful if you prefer less intense daytime heat.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
December93mm average rain
December sits on the drier side of Yagen Valley's year, which helps with sightseeing and transfers.
Driest monthsJanuary to June, October, and December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
December2.5 hours average sun
December is one of Yagen Valley's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsApril to June
This stretch has the strongest sunshine in the monthly averages.
December12°C average sea
December is below Yagen Valley's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJuly to October
Sea temperatures are usually near 18°C in this stretch, so swimming comfort is at its strongest.
December15 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 August
These months have the strongest weather score in the monthly averages.
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