Are there any weather conditions I should be aware of when planning a trip to Korea?

[cocopeach]

I am just wondering if there is a better/worse time of the year to go to Korea for work. 

I don't really see anyone mention the weather. I am not sure how it is over there at all. I have been to Japan and I know they have Hurricane seasons. 

Are there any weather conditions I should be aware of when planning a trip to Korea?

[Jabba]

Most people try to avoid the really sticky and humid monsoon summer months. it's a lot more pleasant in the spring and fall, and a lot of peope tend to go during the winter.