Cool
Average highs are around 12°C, so pack for cooler days.
December verdict
Poor for holiday weather
Average highs are around 12°C, so pack for cooler days. Sunshine averages 3.7h per day, so this is not one of the brighter months. Rainfall averages 61mm, which is relatively low for holiday planning.
Monthly averages
Temp
12°C
Rain
61mm
Sun
3.7h
Sea
18°C
Weather score
23
Poor
Cool
Average highs are around 12°C, so pack for cooler days.
Drier
Rainfall averages 61mm, which is relatively low for holiday planning.
Limited sun
Sunshine averages 3.7h per day, so this is not one of the brighter months.
Cool sea
Sea temperatures average 18°C, so the water can feel cool.
Map
Compare Iki, Japan with nearby places by weather score, rain, sun, temperature, and swim conditions.
December12°C average high
December is on the cooler side of Iki's year, useful if you prefer less intense daytime heat.
Warmest monthsJuly to September
This stretch sets the upper range for average daytime heat.
December61mm average rain
December is one of Iki's driest months, making outdoor days easier to plan than in wetter parts of the year.
Driest monthsJanuary to March and October to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
December3.7 hours average sun
December is one of Iki's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsMay and August
This stretch has the strongest sunshine in the monthly averages.
December18°C average sea
December is below Iki'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.
December23 weather score
December scores below Iki's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsAugust to October
These months have the strongest weather score in the monthly averages.
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