Collection Science 2026.08.22

Will the Heat Really Retreat When Chuseo Comes?

Understanding the Meaning of the Seasonal Term and Distinguishing Real Late Summer Heat

#Lifestyle Information #Chuseok #Late Summer #Seasonal Living #Autumn Preparation

Chuseo (처서) is the fourteenth of the twenty-four seasonal divisions, marking the time when the sun's apparent position reaches 150 degrees longitude. While its name suggests the retreat of summer heat, it does not serve as a boundary that simultaneously ends nationwide heatwaves. Following the summer solstice, the length of daylight decreases and the sun's altitude lowers, but the heat stored in the land and sea during summer can lead to continued midday warmth and tropical nights.

This guide separates the astronomical principles of Chuseo from its cultural significance and actual temperature changes. It examines the length of daylight, solar energy, seasonal delays, as well as climate flows changing year by year, and also includes the differences in perception between urban and rural areas. Instead of concluding that ancient seasonal terms are incorrect, it focuses on understanding how long-term seasonal directions and today's weather forecasts represent information on different time scales.

Solar Longitude 150 Degrees

Chuseo marks the time when the sun’s apparent movement reaches 150 degrees longitude. It does not refer to a fixed lunar calendar date but typically occurs around August 23rd in the solar calendar, with the specific time changing slightly each year. This guide examines this item from the perspective of ‘understanding the meaning of the seasonal term and distinguishing real late summer heat’. The order is arranged based on the flow from late summer to early autumn and practical application rather than any hierarchy or popularity ranking. By reviewing the entire content of the connected official guide along with the latest forecasts and operational information, and comparing prior and subsequent items, you can apply the meaning of Chuseo concretely to weather, the dining table, and life management instead of letting it remain as an old saying.

분야 절기 확인법 공식 예보·표시사항 확인

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The Name and Meaning of Chuseo

Chuseo (處暑) is interpreted as the time to deal with or retreat from heat. The name of this season is a reflection of the long-term flow of the seasons, not a forecast that indicates the end of nationwide heat on that specific day. This guide examines this item from the perspective of ‘understanding the meaning of the seasonal term and distinguishing real late summer heat’. The order is arranged based on the flow from late summer to early autumn and the practical application rather than any hierarchy or popularity ranking. By reviewing the entire content of the connected official guide along with the latest forecasts and operational information, and comparing prior and subsequent items, you can apply the meaning of Chuseo concretely to weather, the dining table, and life management instead of letting it remain as an old saying.

분야 절기 문화 확인법 공식 예보·표시사항 확인

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Decrease in Daylight Hours

Decrease in Daylight

After the summer solstice, the length of daylight continues to shorten, and around Chuseo, the sun sets earlier. Even if temperatures don't drop immediately, the reduced exposure of the surface to sunlight forms the basis for seasonal transitions. This guide examines this item from the perspective of ‘understanding the meaning of the seasonal term and distinguishing real late summer heat’. The order is arranged based on the flow from late summer to early autumn and practical application rather than any hierarchy or popularity ranking. By reviewing the entire content of the connected official guide along with the latest forecasts and operational information, and comparing prior and subsequent items, you can apply the meaning of Chuseo concretely to weather, the dining table, and life management instead of letting it remain as an old saying.

분야 천문·계절 확인법 공식 예보·표시사항 확인

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Delayed Seasonal Temperatures

Seasonal Delay of Temperatures

Even though the sun's altitude decreases, the heat stored in the land and sea can prolong late summer heat. This means there is a time lag between astronomical seasonal changes and actual felt temperatures. This guide examines this item from the perspective of ‘understanding the meaning of the seasonal term and distinguishing real late summer heat’. The order is arranged based on the flow from late summer to early autumn and practical application rather than any hierarchy or popularity ranking. By reviewing the entire content of the connected official guide along with the latest forecasts and operational information, and comparing prior and subsequent items, you can apply the meaning of Chuseo concretely to weather, the dining table, and life management instead of letting it remain as an old saying.

분야 기후 확인법 공식 예보·표시사항 확인

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Late Summer Variability of Tropical Nights

Tropical Night Variations in Late Summer

Nighttime temperatures can remain high after Chuseo due to clouds, humidity, and urban heat islands. Instead of relying solely on seasonal terms to end cooling, it is important to check local minimum temperatures and tropical night forecasts. This guide examines this item from the perspective of ‘understanding the meaning of the seasonal term and distinguishing real late summer heat’. The order is arranged based on the flow from late summer to early autumn and practical application rather than any hierarchy or popularity ranking. By reviewing the entire content of the connected official guide along with the latest forecasts and operational information, and comparing prior and subsequent items, you can apply the meaning of Chuseo concretely to weather, the dining table, and life management instead of letting it remain as an old saying.

분야 기온 확인법 공식 예보·표시사항 확인

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Changing Weather During Chuseo Each Year

Variations in Chuseo Weather Each Year

While long-term averages indicate the direction of the seasons, the weather during each year's Chuseo can vary greatly depending on the North Pacific High, typhoons, and precipitation distribution. It is important to distinguish between daily weather and climate norms. This guide examines this item from the perspective of ‘understanding the meaning of the seasonal term and distinguishing real late summer heat’. The order is arranged based on the flow from late summer to early autumn and practical application rather than any hierarchy or popularity ranking. By reviewing the entire content of the connected official guide along with the latest forecasts and operational information, and comparing prior and subsequent items, you can apply the meaning of Chuseo concretely to weather, the dining table, and life management instead of letting it remain as an old saying.

분야 기후 확인법 공식 예보·표시사항 확인

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Perceived Differences Between Cities and Rural Areas

Perception Differences Between Urban and Rural Areas

Cities, where buildings and pavement store heat, can remain warm even at night, while the mountains and inland areas can see nighttime temperatures drop quickly on clear nights. Even within the same locality, experiences can differ based on elevation and land cover. This guide examines this item from the perspective of ‘understanding the meaning of the seasonal term and distinguishing real late summer heat’. The order is arranged based on the flow from late summer to early autumn and practical application rather than any hierarchy or popularity ranking. By reviewing the entire content of the connected official guide along with the latest forecasts and operational information, and comparing prior and subsequent items, you can apply the meaning of Chuseo concretely to weather, the dining table, and life management instead of letting it remain as an old saying.

분야 생활기상 확인법 공식 예보·표시사항 확인

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Chuseok and Climate Change

Chuseo and Climate Change

Due to global warming, late summer heat can extend longer, resulting in years where traditional seasonal awareness and recent weather diverge. It is essential to base trends on decades of observational data rather than a single year. This guide examines this item from the perspective of ‘understanding the meaning of the seasonal term and distinguishing real late summer heat’. The order is arranged based on the flow from late summer to early autumn and practical application rather than any hierarchy or popularity ranking. By reviewing the entire content of the connected official guide along with the latest forecasts and operational information, and comparing prior and subsequent items, you can apply the meaning of Chuseo concretely to weather, the dining table, and life management instead of letting it remain as an old saying.

분야 기후변화 확인법 공식 예보·표시사항 확인

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Even if you encounter a cooler morning around Chuseo, there's no need to immediately put away your cooling appliances and summer clothes. If the North Pacific High expands again or if humid southern winds blow in, late summer heat can return, and cities with many buildings retain heat that is slowly released at night. Conversely, clear and calm inland areas and mountains may experience rapid drops in morning temperatures due to radiative cooling.

To effectively use seasonal terms in your life, check the local maximum and minimum temperatures along with heatwave alerts and humidity data rather than just the term Chuseo. You shouldn't judge climate trends from a single hot Chuseo. By separating the changes in late summer heat observed over the long term from daily weather forecasts, you can supplement traditional seasonal awareness with modern meteorological information without letting them conflict.

한눈에 보기 8개

Solar Longitude 150 Degrees

절기 · 공식 예보·표시사항 확인

The Name and Meaning of Chuseo

절기 문화 · 공식 예보·표시사항 확인

Decrease in Daylight Hours

천문·계절 · 공식 예보·표시사항 확인

Delayed Seasonal Temperatures

기후 · 공식 예보·표시사항 확인

Late Summer Variability of Tropical Nights

기온 · 공식 예보·표시사항 확인

Changing Weather During Chuseo Each Year