I love this kinda weather if traveling in Seoul. Not that warm and not that cold yet. Just nice. Autumn is rolling in, soon. For those who gonna visit Korea this coming October, it seems the temperature dipped down earlier than expected. Hmm..is autumn gonna be much colder this time around? Agagagaa..Just make sure you have a spare light/autumn jacket with you. The weather can go wild unexpectedly.
The lowest temperature of air conditioner in my office (in Malaysia) is about 16 degree celcius, but I can't stand it! However, with loads of walking done in Seoul, this kinda weather is definitely appreciated.