What is the weather like in Incheon vs Seoul in September?

In September, Incheon averages 26°C high / 19°C low with about 148 mm of rain; Seoul averages 28°C high / 19°C low with about 148 mm.

Incheon vs Seoul in September

Incheon and Seoul are nearly tied in September — 76 vs 75 on SeasonMap's comfort score. Incheon is warm, rainy, muggy air; Seoul is hot, rainy, muggy air.

Incheon vs Seoul — September climate, side by side

	🇰🇷 Incheon	🇰🇷 Seoul
Comfort score	76/100 (B)	75/100 (B)
Feels-like high	28°C	30°C
Avg high / low	26° / 19°	28° / 19°
Rainfall	148 mm	148 mm
Rainy days	9	9
Humidity	80%	79%
Air quality (AQI)	73	73

Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.

Month by month

Incheon 🇰🇷 South Koreawarm, rainy, muggy air · best May76
Seoul 🇰🇷 South Koreahot, rainy, muggy air · best May75

Incheon vs Seoul in September — FAQ

Is September better in Incheon or Seoul?: Incheon and Seoul are nearly tied in September — 76 vs 75 on SeasonMap's comfort score. Incheon is warm, rainy, muggy air; Seoul is hot, rainy, muggy air.
What is the weather like in Incheon vs Seoul in September?: In September, Incheon averages 26°C high / 19°C low with about 148 mm of rain; Seoul averages 28°C high / 19°C low with about 148 mm.