This year's first heat wave advisory has been issued for the central part of the country including Seoul and neighboring provinces as daytime highs soared to over 30 degrees Celsius in most of the region for a second day on Monday.

The heat will persist until Tuesday but subside to some extent on Wednesday, when the central region comes under the influence of the monsoon front, according to the Korea Meteorological Administration.

The advisory, which was introduced for the first time in 2008, is issued when daytime highs over 33 degrees Celsius are expected to persist for two days or longer.