Measurements:
°C
°F
CURRENT WEATHER
08:53
Incheon
70°F
S 4 mph
Feels like: 70°F
Precip: 2%
World Resorts South Korea Incheon Weather

7 Day Weather Forecast

09.29
tue
DAY
78°F
E 2 mph
precip
1%
NIGHT
70°F
E 2 mph
precip
2%
09.30
wed
DAY
78°F
NE 9 mph
precip
1%
NIGHT
64°F
SE 12 mph
precip
5%
10.01
thu
DAY
72°F
E 14 mph
precip
0%
NIGHT
62°F
S 9 mph
precip
1%
10.02
fri
DAY
68°F
SE 12 mph
precip
0%
NIGHT
62°F
SE 4 mph
precip
10%
10.03
sat
DAY
74°F
E 2 mph
precip
1%
NIGHT
68°F
SE 2 mph
precip
2%
10.04
sun
DAY
72°F
NE 5 mph
precip
7%
NIGHT
66°F
S 6 mph
precip
3%
10.05
mon
DAY
74°F
W 3 mph
precip
10%
NIGHT
66°F
S 6 mph
precip
2%

Incheon Sea Water Temperature in September, °F

Select Year: 2026 2025 2024

The average sea surface temperature in September 2026 for Incheon was 25.1°F. The maximum and minimum values were 23.0°F and 27.1°F respectively.

Incheon on the Weather Map

Best Time to Visit Incheon
The most sunny months:
May 19 days
October 18 days
March 18 days
The most warm months:
August 88.0 °F
July 85.3 °F
September 81.8 °F
Warmest sea temperature:
August 82.5 °F
September 78.3 °F
July 77.6 °F
The most cold months:
January 31.8 °F
February 36.2 °F
December 36.6 °F
The most rainy months:
July 10 days
August 8 days
June 4 days
The most windy months:
December 11 mph
November 10 mph
January 10 mph
more details