Cool
Average highs are around 16°C, so pack for cooler days.
April verdict
Jeju-do, South Korea in April
Weather score28Poor
Poor for holiday weather
Average highs are around 16°C, so pack for cooler days. Sunshine averages 6.4h per day, enough for a balanced month. Rainfall averages 146mm, so some wet days are possible.
April weather
Monthly averages
Temp
16°C
Rain
146mm
Sun
6.4h
Sea
16°C
Weather score
28
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 146mm, so some wet days are possible.
Some sun
Sunshine averages 6.4h per day, enough for a balanced month.
Cool sea
Sea temperatures average 16°C, so the water can feel cool.
Map
Weather map
Compare Jeju-do, South Korea with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
April16°C average high
April is close to Jeju-do's yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJuly to September
This stretch sets the upper range for average daytime heat.
Rain
April146mm average rain
April sits near Jeju-do's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to March and October to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
April6.4 hours average sun
April is brighter than Jeju-do's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsMay and August
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
April16°C average sea
April is one of the coolest sea months, so the water may feel fresher than in peak months.
Warmest seaJuly to September
Sea temperatures are usually near 25°C in this stretch, so swimming comfort is at its strongest.
Weather score
April28 weather score
April 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 October
These months have the strongest weather score in the monthly averages.
