People cool off the water at a beach in Gangneung, Gangwon, on May 31. [YONHAP]
Ulleung County in North Gyeongsang recorded a record-high May morning low of 25.8 degrees Celsius (78.4 degrees Fahrenheit) on Sunday, as record-breaking morning heat was reported across the country, according to the Korea Meteorological Administration (KMA).
It marked the warmest morning recorded between 3 a.m. and 9 a.m. since weather observations began in the area in August 1938.
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Similar records were set elsewhere along eastern coastal areas.
