Mild
Average highs are around 25°C, so days are mild rather than hot.
Weather Guide
Yeonpyeong Island, South Korea Average Monthly Weather
Weather score44Mixed annual avg
Best months: September, August, June
Across the year, average daytime temperatures are around 15°C, sunshine averages 6.7h per day, and rainfall totals about 1138mm. Sea temperatures average 13°C across the year.
Annual weather
Annual averages
Temp
15°C
Rain
1138mm
Annual total
Sun
6.7h
Sea
13°C
Weather score
44
Mixed avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 118mm, so some wet days are possible.
Some sun
Sunshine averages 7.1h per day, enough for a balanced month.
Swimmable
Sea temperatures average 23°C, which can work for swimming but may feel fresh.
Map
Weather map
Compare Yeonpyeong Island, South Korea with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
September25°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
September118mm average rain
September sits near Yeonpyeong Island's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
Driest monthsJanuary to June and September to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
September7.1 hours average sun
September sits close to Yeonpyeong Island's yearly sunshine average, so it is a middle-of-the-pack month for bright days.
Brightest monthsApril to June
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
September23°C average sea
September is one of Yeonpyeong Island's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJuly to September
Sea temperatures are usually near 21°C in this stretch, so swimming comfort is at its strongest.
Weather score
September63 weather score
September is one of Yeonpyeong Island's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJune and August to September
These months have the strongest weather score in the monthly averages.
Hotels near Yeonpyeong Island, South Korea
Marriott
Nest Hotel, a Member of Design Hotels™Incheon, South Korea
Sheraton Grand Incheon HotelIncheon, South Korea
Courtyard Seoul Botanic ParkSeoul, South Korea
The Link Seoul, a Tribute Portfolio HotelGuro-gu, South Korea
Courtyard Seoul Times SquareSeoul, South Korea
Four Points by Sheraton Seoul, GuroSeoul, South Korea