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Seoul has a continental monsoon climate with four sharply distinct seasons and a rainy summer period that defines the annual rhythm. Winters are cold and dry (typically −5 to 5°C), springs warm rapidly, and summers bring both high heat — often reaching 32–38°C — and the summer rain season that raises humidity significantly. Autumn is typically the most comfortable season for ventilation: clear skies, lower humidity, and falling but still-comfortable temperatures after the summer heat.
The summer ventilation window in Seoul is compressed by the combination of heat and humidity. Early morning is the most viable time: from 5–8 AM, overnight cooling brings temperatures down to 22–27°C with lower humidity than the afternoon peak. The monsoon rain periods temporarily reset conditions — the hours following summer rainfall often offer the day's best air quality and most comfortable temperatures. Winter brings the opposite challenge: cold dry air is easy to ventilate briefly, but heating emissions — coal, gas, or wood — can spike outdoor PM2.5 on calm, cold days. OpenWindow.live's real-time AQI monitoring is particularly valuable in Seoul during winter inversions, when air quality can deteriorate rapidly without obvious visible cues.
En Seoul, los mejores momentos para ventilar son por la mañana temprano (5–8) y después del atardecer, cuando la temperatura exterior baja de la interior.
Sí, en la mayoría de los casos. Abrir las ventanas puede bajar la temperatura interior 2–5°C en 30 minutos si el aire exterior es más fresco.
Por encima del 80% de humedad, abrir ventanas hace el aire pegajoso. Mejor esperar a horas más secas.