Mild
Average highs are around 21°C, so days are mild rather than hot.
May verdict
Mixed for holiday weather
Average highs are around 21°C, so days are mild rather than hot. Sunshine averages 8h per day, so bright days are a strong part of the month. Rainfall averages 83mm, so some wet days are possible.
Monthly averages
Temp
21°C
Rain
83mm
Sun
8h
Sea
13°C
Weather score
47
Mixed
Mild
Average highs are around 21°C, so days are mild rather than hot.
Showers
Rainfall averages 83mm, 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 13°C, so the water can feel cool.
Map
Compare Wonsan, North Korea with nearby places by weather score, rain, sun, temperature, and swim conditions.
May21°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.
May83mm average rain
May sits on the drier side of Wonsan'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 Wonsan'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.
May13°C average sea
May is close to Wonsan'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.
May47 weather score
May sits close to Wonsan'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.