World Resorts South Korea Incheon Weather

Incheon 7 Days Forecast

18.05
mon
Day
70°F
NE 6 mph
Precip.
0%
Night
66°F
NE 2 mph
Precip.
0%
19.05
tue
Day
70°F
SE 8 mph
Precip.
0%
Night
70°F
SW 7 mph
Precip.
0%
20.05
wed
Day
72°F
W 8 mph
Precip.
0%
Night
61°F
SE 2 mph
Precip.
100%
21.05
thu
Day
68°F
NW 1 mph
Precip.
0%
Night
66°F
SW 6 mph
Precip.
0%
22.05
fri
Day
72°F
N 6 mph
Precip.
0%
Night
66°F
N 4 mph
Precip.
0%
23.05
sat
Day
66°F
NE 7 mph
Precip.
0%
Night
64°F
S 3 mph
Precip.
0%
24.05
sun
Day
70°F
E 7 mph
Precip.
0%
Night
66°F
E 2 mph
Precip.
0%

Sea water temperature in May, °F

Show year:
2026
2025
2024

The average sea water temperature in May of 2026 was 58.7°F. The highest and lowest sea temperatures during the month were 62.4°F and 57.0°F.

Air temperature in Incheon, °F

Precipitation total in Incheon, in.

* Charts above show average data for the last 3 years.

Best time for vacation in Incheon

Sunniest months:
October 18 days
May 18 days
March 18 days
Warmest months:
August 84.4 °F
July 82.0 °F
September 78.6 °F
Warmest sea temp:
August 79.1 °F
September 75.4 °F
July 74.7 °F
Coldest months:
January 33.6 °F
February 37.6 °F
December 38.0 °F
Rainiest months:
July 10 days
August 8 days
June 5 days
Windiest months:
December 11.1 mph
November 10.3 mph
January 10.3 mph

Incheon on a weather map

Current weather
03:14
Incheon
+64°F
NW 1 mph
Feels like: +64°F
Precip.: 0%
Places in South Korea:
Name
°F
Yongpyong
+61°F
Incheon
+64°F
Muju
+55°F
Busan
+63°F
Seoul
+64°F
Jeju
+63°F
24 Hours Forecast
Incheon
Local time: 03:14
May 18, monday
0600
63°F
NW
3 mph
0900
66°F
N
3 mph
1200
70°F
NE
6 mph
1500
70°F
E
8 mph
1800
68°F
E
7 mph
2100
68°F
SE
4 mph
May 19, tuesday
0000
66°F
NE
2 mph
0300
66°F
NE
3 mph
Units of measurement: °C / °F