Mild
Average highs are around 23°C, so days are mild rather than hot.
September verdict
Jirisan National Park, South Korea in September
Weather score53Mixed
Mixed for holiday weather
Average highs are around 23°C, so days are mild rather than hot. Sunshine averages 6.1h per day, enough for a balanced month. Rainfall averages 167mm, so some wet days are possible.
September weather
Monthly averages
Temp
23°C
Rain
167mm
Sun
6.1h
Sea
24°C
Weather score
53
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 167mm, so some wet days are possible.
Some sun
Sunshine averages 6.1h per day, enough for a balanced month.
Swimmable
Sea temperatures average 24°C, which can work for swimming but may feel fresh.
Map
Weather map
Compare Jirisan National Park, South Korea with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September23°C average high
September sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJune to September
This stretch sets the upper range for average daytime heat.
Rain
September167mm average rain
September sits near Jirisan National Park's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to March, May, and October to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September6.1 hours average sun
September is below Jirisan National Park's yearly sunshine average, so bright-day planning is less reliable than in peak months.
Brightest monthsApril to May
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September24°C average sea
September sits in the warmer sea-temperature season, usually making swimming easier to enjoy.
Warmest seaJuly to September
Sea temperatures are usually near 23°C in this stretch, so swimming comfort is at its strongest.
Weather score
September53 weather score
September scores above Jirisan National Park's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsAugust to September
These months have the strongest weather score in the monthly averages.
