Weather in Korea Selatan in September
Country-wide climate normals across 31 cities in Korea Selatan.
How Hot Is Korea Selatan in September?
Korea Selatan's September is consistently warm — typical 26°C, with no major regional outliers.
Sunshine in Korea Selatan in September
Variable weather dominates Korea Selatan in September: 4.0h of direct sun on a typical day in Seoul, with daylight from 6:15 am to 6:40 pm. Expect both bright and cloudy days across the month, and slight regional differences between coastal and inland zones.
Does It Rain In Korea Selatan In September?
Heavy seasonal rains saturate Korea Selatan in September — Seoul averages 205mm of rain across 10 days, with downpours an almost daily feature. The pattern is consistent across most regions, particularly along monsoon-affected coasts. Expect torrential afternoon storms followed by humid heat.
Is Korea Selatan Humid In September?
Korea Selatan feels humid through September: 73% in Seoul, similar nationwide. Warm days feel several degrees hotter than the thermometer suggests, and morning mist or post-rain steam is common. Drier upland or interior regions may feel a bit less oppressive.
Wind In Korea Selatan In September
Gentle steady winds define Korea Selatan's September: Seoul averages 15 kph, with conditions consistent across most regions. The breeze keeps warm days bearable without being a nuisance.
Cloud Cover In Korea Selatan In September
Cloudy skies dominate Korea Selatan in September — 58% cover in Seoul, with similar overcast conditions in most regions. Direct sun is patchy and broken; expect grey stretches between brief bright moments. Coastal areas may be heavier than inland.