Cool
Average highs are around 9°C, so pack for cooler days.
December verdict
Poor for holiday weather
Average highs are around 9°C, so pack for cooler days. Sunshine averages 5.8h per day, enough for a balanced month. Rainfall averages 24mm, which is relatively low for holiday planning.
Monthly averages
Temp
9°C
Rain
24mm
Sun
5.8h
Sea
14°C
Weather score
34
Poor
Cool
Average highs are around 9°C, so pack for cooler days.
Drier
Rainfall averages 24mm, which is relatively low for holiday planning.
Some sun
Sunshine averages 5.8h per day, enough for a balanced month.
Cool sea
Sea temperatures average 14°C, so the water can feel cool.
Map
Compare Yeosu, South Korea with nearby places by weather score, rain, sun, temperature, and swim conditions.
December9°C average high
December is on the cooler side of Yeosu's year, useful if you prefer less intense daytime heat.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
December24mm average rain
December is one of Yeosu'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.
December5.8 hours average sun
December is one of Yeosu's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsMarch to May and August
This stretch has the strongest sunshine in the monthly averages.
December14°C average sea
December is below Yeosu's yearly sea-temperature average, so swimming can feel fresher.
Warmest seaJuly to September
Sea temperatures are usually near 23°C in this stretch, so swimming comfort is at its strongest.
December34 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 monthsAugust to September
These months have the strongest weather score in the monthly averages.