Cool
Average highs are around 18°C, so pack for cooler days.
April verdict
Ulsan, South Korea in April
Weather score33Poor
Poor for holiday weather
Average highs are around 18°C, so pack for cooler days. Sunshine averages 6.9h per day, enough for a balanced month. Rainfall averages 115mm, so some wet days are possible.
April weather
Monthly averages
Temp
18°C
Rain
115mm
Sun
6.9h
Sea
15°C
Weather score
33
Poor
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 115mm, so some wet days are possible.
Some sun
Sunshine averages 6.9h per day, enough for a balanced month.
Cool sea
Sea temperatures average 15°C, so the water can feel cool.
Map
Weather map
Compare Ulsan, South Korea with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
April18°C average high
April is close to Ulsan's yearly temperature average, giving a typical read on daytime heat.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
April115mm average rain
April sits near Ulsan'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
April6.9 hours average sun
April sits close to Ulsan's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsApril to May
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
April15°C average sea
April is one of the coolest sea months, so the water may feel fresher than in peak months.
Warmest seaAugust to September
Sea temperatures are usually near 26°C in this stretch, so swimming comfort is at its strongest.
Weather score
April33 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 monthsJune to September
These months have the strongest weather score in the monthly averages.
