October 8 marks Hanro (한로), a seasonal division when cold dew forms. The Korea Meteorological Administration (기상청) forecast that morning temperatures would be near or slightly below average and daytime highs would be 23–26°C, near average. Most parts of the country are expected to see a day-night temperature difference of around 15°C.

Dense fog is expected through the morning, especially in inland and mountainous areas of Gangwon, with fog also possible in other inland areas across the country. Frost is forecast in inland and mountainous areas of Gangwon, northeastern Jeonbuk, and the northeastern mountains of Gyeongbuk, while ice may form in the mountains of Gangwon. Skies are expected to be mostly clear nationwide.

Background and context

Hanro marks a time when autumn deepens and the weather gradually turns colder. However, the name or timing of a seasonal division alone does not tell us the actual temperature and weather in a particular area. The key points in this weather information are not the seasonal division itself, but the difference between morning and daytime temperatures and the forecast for morning fog and frost or ice in some mountainous areas.

The temperature outlook varies slightly by region. Highs were forecast at 24°C in Seoul, Incheon, Chuncheon, and Gangneung; 25°C in Cheongju, Daejeon, Jeonju, Daegu, Busan, and Ulsan; and 26°C in Gwangju. With temperatures low in the morning and rising during the day, how the weather feels may vary depending on when someone is outdoors.

What this news means

A large day-night temperature difference means clothes suitable for the morning may feel uncomfortable during the day, while clothing chosen based only on daytime temperatures may not be warm enough in the morning. The article also noted the need to take care with health and clothing. In particular, the morning fog forecast is a reason for people traveling early, such as for work or school, to check visibility conditions in advance.

For example, anyone planning to travel through inland or mountainous areas of Gangwon in the morning can check the forecast fog times and locations before setting out, and choose clothing with the temperature difference between morning and daytime in mind. This is a way to prepare based on the forecast; it does not mean that fog or frost was actually observed in those areas.

A photo caption says that the area around the summit of Mount Balwang in Pyeongchang County, Gangwon Province, was awash in various colors the previous day, October 7, showing an autumn landscape.

What is confirmed and what is still unknown

Confirmed facts

  • October 8 marks Hanro, a seasonal division.
  • The Korea Meteorological Administration forecast that morning temperatures would be near or slightly below average, with daytime highs of 23–26°C, near average.
  • Most parts of the country were expected to see a day-night temperature difference of around 15°C.
  • Forecasts called for morning fog, frost in some areas, and the possibility of ice in the mountains of Gangwon.

Still unknown

  • This article alone cannot confirm whether the forecast temperatures, fog, frost, or ice were actually observed.
  • The article does not say where fog, frost, or ice actually occurred, or how long it lasted, if it did occur.

What readers should check

  • If traveling early in the morning, check local fog conditions and temperatures before setting out. Forecasts may differ from actual observations.
  • Choose clothing based on the temperature difference between morning and daytime and the time you will be outdoors.
  • When traveling to inland or mountainous areas of Gangwon, northeastern Jeonbuk, or the northeastern mountains of Gyeongbuk, check the frost forecast; in the mountains of Gangwon, also check the ice forecast.