World Resorts South Korea Incheon Weather

Incheon 14 Days Forecast

27.08
thu
Day
84°F
S 2 mph
Precip.
14%
Night
79°F
S 2 mph
Precip.
17%
28.08
fri
Day
88°F
N 3 mph
Precip.
15%
Night
79°F
N 4 mph
Precip.
27%
29.08
sat
Day
81°F
SE 6 mph
Precip.
16%
Night
75°F
SE 5 mph
Precip.
23%
30.08
sun
Day
79°F
NE 7 mph
Precip.
16%
Night
75°F
N 2 mph
Precip.
30%
31.08
mon
Day
81°F
SE 5 mph
Precip.
11%
Night
75°F
S 5 mph
Precip.
14%
01.09
tue
Day
82°F
SW 3 mph
Precip.
10%
Night
77°F
SW 8 mph
Precip.
6%
02.09
wed
Day
82°F
SW 14 mph
Precip.
12%
Night
75°F
SW 15 mph
Precip.
15%
03.09
thu
Day
79°F
SW 17 mph
Precip.
14%
Night
73°F
SW 18 mph
Precip.
13%
04.09
fri
Day
79°F
SW 22 mph
Precip.
12%
Night
73°F
SW 22 mph
Precip.
14%
05.09
sat
Day
72°F
S 16 mph
Precip.
48%
Night
72°F
S 12 mph
Precip.
14%
06.09
sun
Day
81°F
E 10 mph
Precip.
2%
Night
75°F
NW 3 mph
Precip.
17%
07.09
mon
Day
84°F
E 1 mph
Precip.
1%
Night
77°F
S 4 mph
Precip.
4%
08.09
tue
Day
86°F
SW 8 mph
Precip.
1%
Night
72°F
W 6 mph
Precip.
32%
09.09
wed
Day
73°F
W 6 mph
Precip.
28%
Night
73°F
W 4 mph
Precip.
30%

Sea water temperature in August, °F

Show year:
2026
2025
2024

The average sea water temperature in August of 2026 was 82.3°F. The highest and lowest sea temperatures during the month were 85.6°F and 80.2°F.

Sea water temperature in September, °F

Show year:
2025
2024
2023

The average sea water temperature in September of 2025 was 78.3°F. The highest and lowest sea temperatures during the month were 82.4°F and 73.0°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:
May 19 days
October 18 days
March 18 days
Warmest months:
August 84.2 °F
July 81.8 °F
September 78.6 °F
Warmest sea temp:
August 79.3 °F
September 75.4 °F
July 74.8 °F
Coldest months:
January 33.6 °F
February 37.6 °F
December 38.0 °F
Rainiest months:
July 10 days
August 8 days
June 4 days
Windiest months:
December 11.1 mph
November 10.3 mph
January 10.3 mph

Incheon on a weather map

Current weather
04:09
Incheon
+77°F
S 2 mph
Feels like: +81°F
Precip.: 21%
Places in South Korea:
Name
°F
Yongpyong
+70°F
Incheon
+77°F
Muju
+75°F
Busan
+81°F
Seoul
+77°F
Jeju
+79°F
24 Hours Forecast
Incheon
Local time: 04:09
August 27, thursday
0600
75°F
S
4 mph
0900
77°F
S
5 mph
1200
84°F
S
2 mph
1500
86°F
E
6 mph
1800
84°F
SE
7 mph
2100
81°F
SE
3 mph
August 28, friday
0000
79°F
S
2 mph
0300
79°F
SW
2 mph
Units of measurement: °C / °F