Last month, South Korea received rain, once every two days.
The 14.4 days of rain,made it the wettest May since 1973,in terms of frequency.
And it was the seventh wettest in terms of precipitation with more than 142 millimeters,falling in total.
"Just three days into the month of June, it began raining again from the southern regions. And now, there’s rainfall across the entire country."
Experts say, the frequent rain is caused by the cold air in the upper atmosphere travelling southward, clashing with the relatively warm weather in the lower atmosphere.
That instability causes rain.
And global warming may have fuelled that instability too.
"The fact that the air flows from north to south, not from the west to east, is part of the impact of global warming. So global warming could have played a role in causing more rain."
China was also hit by the heaviest rainfall in 5 decades.
And in parts of southern Japan, the monsoon season has already started,three weeks earlier than usual.
But South Korea, is not likely to see an early monsoon this year.
"As long as the cold air continues to affect the country, it will make it difficult for the rain front that's affecting Japan and China to make its way to South Korea. So we don't necessarily expect an early monsoon."
Typically, the monsoon in South Korea starts on June 23rd,starting from the southern region, and lasts for a month.
Lee Kyung-eun, Arirang News.