Warm
Average highs sit around 30°C, giving warm days by monthly-average standards.
Weather Guide
Daejeon, South Korea Average Monthly Weather
Weather score43Mixed annual avg
Best months: September, August, June
Across the year, average daytime temperatures are around 17°C, sunshine averages 6.7h per day, and rainfall totals about 1271mm. Sea temperatures average 15°C across the year.
Annual weather
Annual averages
Temp
17°C
Rain
1271mm
Annual total
Sun
6.7h
Sea
15°C
Weather score
43
Mixed avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 247mm, so showers are a real planning factor.
Some sun
Sunshine averages 7.2h per day, enough for a balanced month.
Swimmable
Sea temperatures average 26°C, which can work for swimming but may feel fresh.
Map
Weather map
Compare Daejeon, South Korea with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August30°C average high
August is one of Daejeon's warmest months, with daytime heat above the yearly average.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
Rain
August247mm average rain
August is wetter than Daejeon's yearly average, so flexible plans matter more.
Driest monthsJanuary to May and October to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August7.2 hours average sun
August sits close to Daejeon'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
August26°C average sea
August is one of Daejeon's warmest sea months, when swimming comfort is usually strongest.
Warmest seaJuly to September
Sea temperatures are usually near 23°C in this stretch, so swimming comfort is at its strongest.
Weather score
August61 weather score
August is one of Daejeon's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJune to September
These months have the strongest weather score in the monthly averages.
