World Resorts South Korea Seoul Weather

Seoul 7 Days Forecast

16.09
wed
Day
79°F
W 4 mph
Precip.
0%
Night
70°F
W 3 mph
Precip.
1%
17.09
thu
Day
77°F
W 6 mph
Precip.
9%
Night
70°F
W 4 mph
Precip.
13%
18.09
fri
Day
79°F
W 9 mph
Precip.
7%
Night
68°F
SW 6 mph
Precip.
4%
19.09
sat
Day
79°F
W 8 mph
Precip.
1%
Night
68°F
W 4 mph
Precip.
3%
20.09
sun
Day
79°F
SW 3 mph
Precip.
10%
Night
72°F
SW 2 mph
Precip.
3%
21.09
mon
Day
82°F
SW 2 mph
Precip.
1%
Night
73°F
SW 2 mph
Precip.
3%
22.09
tue
Day
82°F
W 6 mph
Precip.
9%
Night
73°F
N 2 mph
Precip.
2%

Sea water temperature in September, °F

Show year:
2026
2025
2024

The average sea water temperature in September of 2026 was 77.5°F. The highest and lowest sea temperatures during the month were 79.7°F and 75.0°F.

Air temperature in Seoul, °F

Precipitation total in Seoul, in.

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

Best time for vacation in Seoul

Sunniest months:
May 19 days
October 18 days
March 17 days
Warmest months:
August 87.0 °F
July 85.8 °F
June 82.2 °F
Warmest sea temp:
August 78.9 °F
September 74.9 °F
July 74.8 °F
Coldest months:
January 32.6 °F
December 36.0 °F
February 38.3 °F
Rainiest months:
July 11 days
August 8 days
September 5 days
Windiest months:
April 7.1 mph
March 7.1 mph
May 6.5 mph

Seoul on a weather map

Current weather
12:33
Seoul
+79°F
W 4 mph
Feels like: +77°F
Precip.: 0%
Places in South Korea:
Name
°F
Yongpyong
+72°F
Incheon
+79°F
Muju
+75°F
Busan
+77°F
Seoul
+79°F
Jeju
+73°F
24 Hours Forecast
Seoul
Local time: 12:33
September 16, wednesday
1500
82°F
W
4 mph
1800
79°F
N
2 mph
2100
73°F
S
1 mph
September 17, thursday
0000
70°F
W
3 mph
0300
66°F
W
3 mph
0600
64°F
W
4 mph
0900
70°F
W
4 mph
1200
77°F
W
6 mph
Units of measurement: °C / °F