Cool
Average highs are around 20°C, so pack for cooler days.
Weather Guide
South Korea Average Monthly Weather
Weather score44Mixed annual avg
Best months: August, September, June
Across the year, average daytime temperatures are around 17°C, sunshine averages 6.3h per day, and rainfall totals about 1312mm. Sea temperatures average 13°C across the year.
Annual weather
Annual averages
Temp
17°C
Rain
1312mm
Annual total
Sun
6.3h
Sea
13°C
Weather score
44
Mixed avg
Seasonal climate calendar
Trip feel
Drier
Rainfall averages 62mm, which is relatively low for holiday planning.
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 South Korea with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
October20°C average high
October is close to South Korea'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
October62mm average rain
October sits on the drier side of South Korea's year, which helps with sightseeing and transfers.
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
October6.4 hours average sun
October sits close to South Korea'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
October16°C average sea
October sits in the warmer sea-temperature season, usually making swimming easier to enjoy.
Warmest seaJuly to September
Sea temperatures are usually near 18°C in this stretch, so swimming comfort is at its strongest.
Weather score
October48 weather score
October sits close to South Korea's yearly weather-score average, giving a typical overall read on the month.
Best weather monthsJune to September
These months have the strongest weather score in the monthly averages.
