Seoul: The nation saw the hottest summer on record this season for the second consecutive year amid persistent heat waves due to influences from the North Pacific and Tibetan high-pressure systems, the weather agency said Monday.

According to Yonhap News Agency, an average temperature of 25.7 C was recorded from June 1 to Aug. 31, surpassing last year's record of 25.6 C and marking the hottest summer since 1973, when South Korea began actively collecting weather data, according to the Korea Meteorological Administration (KMA).

The daily high this summer averaged at 30.7 C, marking the highest for the season since 1973. The country reported 28.1 days under heat waves, or when the daily high reached above 33 C, this season to mark the third highest on record, after 31 days in 2018 and 28.5 days in 1994.

It also saw 15.5 tropical nights over the period, marking the fourth highest on record, behind 20.2 days in 2024 and 16.5 days in 2018 and 1994. A tropical night refers to a phenomenon when nighttime temperatures stay above 25 C.

The average amount of precipitation nationwide this summer reached 619.5 millimeters, about 85 percent of the long-term average of 727.3 mm. The Gangwon Province area, which is currently suffering a drought, received 232.5 mm of rain this season -- the least amount since 1973 and 85 mm less than the previous record of 317.5 mm in 1997.