Seoul, South Korea Weather

Seoul,  Weather
(Photo by Ciaran O'Brien on Unsplash)

Current conditions

Updated:
18°C
64.4°F
°C °F

Condition: Clear Sky

Pressure: 1,009 hPa

Feel like: 19 °C

Temperature: 18°C

Cloud: 0%

Humidity: 84%

Wind: NNE - 3 km/h

Visibility: 18.6 km

Weather forecast

Mon
21 Sep
17°C / 27°C
Partly Cloudy
Tue
22 Sep
18°C / 28°C
Partly Cloudy
Wed
23 Sep
18°C / 27°C
Overcast
Thu
24 Sep
18°C / 28°C
Drizzle
Fri
25 Sep
19°C / 27°C
Drizzle
Hourly forecast today:
18:00 PM
15° / 18°
15° / 18°
Clear Sky
84% 10 km/h
19:00 PM
15° / 17°
15° / 17°
Clear Sky
87% 10 km/h
20:00 PM
14° / 16°
14° / 16°
Clear Sky
88% 10 km/h
21:00 PM
14° / 16°
14° / 16°
Clear Sky
89% 10 km/h
22:00 PM
14° / 16°
14° / 16°
Clear Sky
87% 8 km/h
23:00 PM
14° / 17°
14° / 17°
Clear Sky
79% 12 km/h
00:00 AM
13° / 19°
13° / 19°
Clear Sky
65% 16 km/h
01:00 AM
12° / 22°
12° / 22°
Clear Sky
55% 19 km/h
02:00 AM
12° / 24°
12° / 24°
Clear Sky
47% 21 km/h
03:00 AM
11° / 26°
11° / 26°
Clear Sky
41% 22 km/h
04:00 AM
11° / 27°
11° / 27°
Clear Sky
38% 22 km/h

30 Day Averages and Extremes

  • Average high 24.9°C
  • Average low 15.63°C
  • Hottest day 29°C (07 September 2026)
  • Coldest day 9°C (30 September 2026)
  • Average humidity 63.47%
  • Days with precipitation 14 days
  • Highest precipitation 15 mm (24 September 2026)

Yesterday's Data

  • Max: 27°C
  • Min: 16°C
  • Total Precipitation: 0 mm

Temperature and possibility of rain in Seoul over the next 12 hours

Temperature and possibility of rain in Seoul in the coming days

Rainfall in Seoul in the coming days

Seoul Climate Summary

Seoul features a Humid continental, severe dry winter, hot summer (Köppen classification: Dwa), with an average annual temperature of 13.89ºC (57.0ºF), which is about 0.29% higher than the national average for South Korea. Annually, the city experiences approximately 131.35 millimeters (5.17 inches) of rainfall, spread across 109.64 rainy days, accounting for 30.04% of the year.

Longitude 37.566535
Latitude 126.9779692
Yearly high temperature 16.78ºC (62.2ºF)
Yearly low temperature 9.61ºC (49.3ºF)
Hottest month August 30.26ºC (86.47ºF)
Coldest month January -5.18ºC (22.68ºF)
Yearly precip 131.35mm (5.17in)
Days with rainfall 109.64 days (30.04%)
Driest month January (61.4%)
Wettest month July (78.92%)

Weather averages by month

Month High / Low (°C) Rain
January 0.51° / -5.18° 4.0 days
February 3.9° / -2.15° 4.45 days
March 10.43° / 2.94° 6.0 days
April 16.45° / 8.07° 7.91 days
May 22.96° / 13.62° 7.91 days
June 27.55° / 18.62° 11.09 days
July 29.03° / 22.5° 19.91 days
August 30.26° / 23.19° 19.0 days
September 26.14° / 18.37° 9.82 days
October 19.96° / 12.33° 5.55 days
November 11.67° / 5.64° 7.82 days
December 2.51° / -2.63° 6.18 days

Frequently asked questions

1. What is the hottest month in Seoul?

August has the highest average monthly temperature (daily mean of 30.26ºC) and January are the coolest (daily mean of -5.18ºC).

2. What should I wear in Seoul today?

For today's very hot weather in Seoul, with the high temperatures above 28ºC (82.4ºF), consider wearing:
- Thin, moisture-wicking socks
- Breathable shorts or skirts
- Sunscreen for skin protection
- Wide-brimmed sun hat

Temperature

Early
14°C / 25°C
Morning
15°C / 25°C
Afternoon
15°C / 19°C
Evening
14°C / 16°C

Air quality

Moderate

Acceptable air quality, some pollutants present, minor health concerns for sensitive individuals

  • CO2 466
  • CO 169
  • NH3 0
  • NO2 30
  • O3 39
  • PM10 15
  • PM25 13
  • SO2 12
  • CH4 1,887

Sunrise / Sunset

21:18
09:31