S. Korea's Seoul Witnesses Longest 'Tropical Nights' Streak in 118 Years

On Friday, South Korea's capital Seoul set a new record with the biggest number of successive tropical nights in the city after recording the 26th so-called tropical night.

This term means witnessing temperature that above 25 degrees Celsius, according to official data. 

This previous record was set more 118 years ago.

Youn Ki-han, director at Seoul's Meteorology Forecast Division, told AFP: "The cold air is not coming down from the north and as we are affected by the warmer side of the southwest, the temperature is continuously recording around 25 degrees Celsius or above." 

Overnight temperatures in the city were above 25 degrees Celsius for 26 days in a row. This is the longest streak since modern weather observation started in 1907.

This phenomenon is expected to continue, according to Seoul's Office of Meteorology, which means that the record will be re-set every night.

Officials believe that the expansion of this case is not normal.

Youn expressed: "Usually around this time the temperature drops in the morning and evening as the cold air comes down from the northwest, and the North Pacific high-pressure contracts, but currently we aren't seeing any signs of that yet."