Seoul, South Korea Weather

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

Current conditions

Updated:
26°C
78.8°F
°C °F

Condition: Clear Sky

Pressure: 1,015 hPa

Feel like: 27 °C

Temperature: 26°C

Cloud: 12%

Humidity: 53%

Wind: NE - 5 km/h

Visibility: 29.18 km

Weather forecast

Sun
20 Sep
17°C / 30°C
Mainly Clear
Mon
21 Sep
18°C / 29°C
Overcast
Tue
22 Sep
18°C / 27°C
Moderate Drizzle
Wed
23 Sep
19°C / 27°C
Drizzle
Thu
24 Sep
19°C / 26°C
Drizzle
Hourly forecast today:
08:00 AM
16° / 26°
16° / 26°
Clear Sky
53% 27 km/h
09:00 AM
16° / 25°
16° / 25°
Clear Sky
58% 29 km/h
10:00 AM
16° / 23°
16° / 23°
Clear Sky
63% 30 km/h
11:00 AM
16° / 22°
16° / 22°
Clear Sky
67% 29 km/h
12:00 PM
15° / 21°
15° / 21°
Clear Sky
70% 29 km/h
13:00 PM
15° / 20°
15° / 20°
Clear Sky
74% 24 km/h
14:00 PM
15° / 20°
15° / 20°
Clear Sky
77% 23 km/h
15:00 PM
15° / 19°
15° / 19°
Clear Sky
79% 20 km/h
16:00 PM
15° / 18°
15° / 18°
Mainly Clear
81% 19 km/h
17:00 PM
15° / 18°
15° / 18°
Mainly Clear
82% 18 km/h
18:00 PM
15° / 18°
15° / 18°
Clear Sky
83% 15 km/h

30 Day Averages and Extremes

  • Average high 25.07°C
  • Average low 16.23°C
  • Hottest day 30°C (20 September 2026)
  • Coldest day 10°C (30 September 2026)
  • Average humidity 65.47%
  • Days with precipitation 13 days
  • Highest precipitation 14 mm (25 September 2026)

Yesterday's Data

  • Max: 27°C
  • Min: 18°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 27ºC (80.6ºF), consider wearing:
- Loose and airy fabrics like linen or cotton
- Thin, moisture-wicking socks
- Wide-brimmed sun hat
- Breathable shorts or skirts

Temperature

Early
16°C / 25°C
Morning
16°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 435
  • CO 166
  • NH3 0
  • NO2 19
  • O3 103
  • PM10 19
  • PM25 13
  • SO2 8
  • CH4 1,441

Sunrise / Sunset

21:17
09:32