Cool
Average highs are around 18°C, so pack for cooler days.
May verdict
Poor for holiday weather
Average highs are around 18°C, so pack for cooler days. Sunshine averages 8h per day, so bright days are a strong part of the month. Rainfall averages 98mm, so some wet days are possible.
Monthly averages
Temp
18°C
Rain
98mm
Sun
8h
Sea
14°C
Weather score
35
Poor
Cool
Average highs are around 18°C, so pack for cooler days.
Showers
Rainfall averages 98mm, so some wet days are possible.
Bright
Sunshine averages 8h per day, so bright days are a strong part of the month.
Cool sea
Sea temperatures average 14°C, so the water can feel cool.
Map
Compare Seoraksan National Park, South Korea with nearby places by weather score, rain, sun, temperature, and swim conditions.
May18°C average high
May sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
May98mm average rain
May sits on the drier side of Seoraksan National Park'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.
May8 hours average sun
May is one of Seoraksan National Park's sunniest months, with some of the strongest bright-day conditions in the yearly averages.
Brightest monthsApril to May
This stretch has the strongest sunshine in the monthly averages.
May14°C average sea
May is close to Seoraksan National Park's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJuly to September
Sea temperatures are usually near 22°C in this stretch, so swimming comfort is at its strongest.
May35 weather score
May sits close to Seoraksan National Park'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.