If you’re planning a trip to South Korea, you should know what the weather is like in Korea. But Korea also has a few holidays and some unique weather that might affect your trip as well! Watch this video to see when the best time to visit Korea is!
Average temperature in Korea:
- January – Average temperature: -2.4°C (27.7°F)
- February – Average temperature: 0.4°C (32.7°F)
- March – Average temperature: 5.7°C (42.3°F)
- April - Average temperature: 12.5°C (54.5°F)
- May - Average temperature: 17.8°C (64°F)
- June – Average temperature: 22.2°C (72°F)
- July - Average temperature: 24.9°C (76.8°F)
- August – Average temperature: 25.7°C (78.3°F)
- September - Average temperature: 21.2°C (70.2°F)
- October – Average temperature: 14.8°C (58.6°F)
- November – Average temperature: 7.2°C (45°F)
- December – Average temperature: 0.4°C (32.7°F)
(Source)
Unique Weather in Korea:
Notable Holidays:
For me, May through September would be the best times.
I live in Florida where it’s warm all the time. To me the 50-60°F weather is really cold! >.< Our hottest times in the summer months hit in the 100's°F, so the 70's°F is the nicest temperature for me. 
I was thinking of going in two years (so I can save enough money) I was hoping to go during my birthday but its in August. I think September or October will be better. Autumn is my favorite time of year. I’ll just be sure to check the calendar.
I`ll go on october!!! =)
The best time to visit would be March through August when the temperature is just nice, not too cold and not too hot. Try to avoid Sep ~ Nov because of the typhoon season. Dec ~ Feb is too cold really.