Gaechonjeol morning turns chilly: what to check for big daily temperature gaps and holiday rain
On Gaechonjeol, October 3, the morning air is expected to be noticeably chilly, while daytime temperatures rise and widen the daily temperature gap. Yonhap reported that morning lows nationwide were forecast at 5–16°C and daytime highs at 21–25°C, with day-night differences possibly around 15°C. SBS reported that Seoul’s morning temperature was near 10°C and that rain could spread to various areas from October 4. If you have holiday travel or outdoor plans, do not look only at today’s clear sky; check morning chill, fog, frost and possible rain the next day as well.
Key summary
- The morning of October 3 is expected to start chilly, with some inland areas near single-digit temperatures.
- Daytime highs can climb into the low to mid-20s Celsius, creating a large perceived-temperature gap within the day.
- Because rain is possible by region from October 4, travelers should recheck the latest forecast for return trips and outings.
Confirmed facts
- Yonhap reported a forecast of nationwide morning lows of 5–16°C and daytime highs of 21–25°C for October 3.
- Yonhap reported that frost could appear in parts of inland and mountain areas of Gangwon, northeastern mountain areas of North Gyeongsang and eastern North Jeolla.
- SBS reported that rain could fall along the Yeongnam coast from morning to daytime on October 4, then spread from the Seoul metropolitan area at night into the following morning.
How to read holiday weather in daily-life terms
In autumn, “clear” does not mean preparation is finished. Thin clothing can feel cold in the morning, while activity during the day can feel warm. In areas where fog is mentioned, such as parts of North Chungcheong and Jeonnam, early driving visibility can shorten, and mountain or rural areas should check frost and ice risks. When rain is forecast for the next day, it is safer to consider event travel time, umbrellas and traffic congestion together.
| Check item | Core meaning | How to prepare |
|---|---|---|
| Morning temperature | Some inland areas may fall to single digits | Bring a light jacket or long sleeves |
| Large day-night gap | Daytime temperatures can rise into the 20s Celsius | Choose layers that are easy to adjust |
| Fog and frost | They can affect driving and crop management | Slow down for early travel and check mountain-area forecasts |
| Holiday rain | Rain is possible in several areas from October 4 | Adjust return trips and outdoor plans with the latest forecast |
What to watch next
- Check whether the Korea Meteorological Administration’s short-term forecast changes the starting time and region of rain.
- For outdoor events or hiking plans, check morning temperature, wind and apparent temperature together.
- Drivers should check fog sections and road conditions around the time rain begins.
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