"Heat Persisted All Night"... Tropical Nights Across All of Jeju

Tropical Nights in North, South, East, and West... Minimum Temperatures Above 25 Degrees
Jeju Records 26 Days, Seogwipo 28 Days of Cumulative Tropical Nights
Heat Wave Alerts Continue... Maximum Perceived Temperatures Around 33 Degrees Forecast

The entire coastline of Jeju experienced sleeplessness due to the heat throughout the night.

According to the Jeju Regional Meteorological Administration on July 31, the minimum temperatures from the evening of the previous day until the morning of this day were 27.8 degrees Celsius in Jeju (north), 27.8 degrees in Seogwipo (south), 27.7 degrees in Seongsan (east), and 25.8 degrees in Gosan (west). All regions recorded minimum temperatures above 25 degrees, resulting in a tropical night phenomenon.

The coastline and urban area of Jeju as seen from the airplane window. Photo by Song Bohyun

A tropical night is defined as a situation where the minimum temperature remains at 25 degrees Celsius or higher between 6:01 p.m. of the previous day and 9:00 a.m. of the following day. It is generally used as an indicator of heat that disrupts sleep because the temperature does not drop sufficiently overnight.

The cumulative number of tropical nights this year is 26 days in Jeju, 28 days in Seogwipo, 15 days in Seongsan, and 18 days in Gosan. The Meteorological Administration explained that the tropical night continued, especially along the coastal areas, because the temperature did not drop sufficiently overnight.

The daytime heat is expected to become even more intense. Currently, a heat wave warning is in effect for the northern and western parts of Jeju, while a heat wave advisory is in effect for the southern, eastern, and mid-mountain regions. The Meteorological Administration advised people to take care of their health, as the maximum perceived temperature is expected to reach around 33 degrees Celsius for the time being.