Seoul, South Korea Weather

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

Current conditions

Updated:
17°C
62.6°F
°C °F

Condition: Clear Sky

Pressure: 1,005 hPa

Feel like: 19 °C

Temperature: 17°C

Cloud: 3%

Humidity: 92%

Wind: ENE - 2 km/h

Visibility: 14.88 km

Weather forecast

Sun
27 Sep
18°C / 24°C
Drizzle
Mon
28 Sep
14°C / 24°C
Overcast
Tue
29 Sep
15°C / 24°C
Moderate Drizzle
Wed
30 Sep
11°C / 20°C
Clear Sky
Thu
01 Oct
9°C / 19°C
Mainly Clear
Hourly forecast today:
20:00 PM
16° / 17°
16° / 17°
Clear Sky
92% 5 km/h
21:00 PM
16° / 17°
16° / 17°
Clear Sky
95% 7 km/h
22:00 PM
16° / 17°
16° / 17°
Clear Sky
95% 7 km/h
23:00 PM
16° / 18°
16° / 18°
Clear Sky
91% 11 km/h
00:00 AM
17° / 20°
17° / 20°
Clear Sky
83% 12 km/h
01:00 AM
17° / 22°
17° / 22°
Clear Sky
75% 12 km/h
02:00 AM
17° / 23°
17° / 23°
Clear Sky
69% 12 km/h
03:00 AM
17° / 24°
17° / 24°
Mainly Clear
64% 15 km/h
04:00 AM
17° / 25°
17° / 25°
Mainly Clear
62% 19 km/h
05:00 AM
18° / 25°
18° / 25°
Partly Cloudy
64% 26 km/h
06:00 AM
18° / 25°
18° / 25°
Mainly Clear
68% 27 km/h

30 Day Averages and Extremes

  • Average high 23.2°C
  • Average low 14.33°C
  • Hottest day 28°C (20 September 2026)
  • Coldest day 9°C (01 October 2026)
  • Average humidity 65.9%
  • Days with precipitation 16 days
  • Highest precipitation 37 mm (24 September 2026)

Yesterday's Data

  • Max: 26°C
  • Min: 17°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 25ºC (77.0ºF), consider wearing:
- Wide-brimmed sun hat
- Lightweight t-shirt or tank top
- Loose and airy fabrics like linen or cotton
- UV-protective sunglasses

Temperature

Early
15°C / 24°C
Morning
16°C / 24°C
Afternoon
17°C / 20°C
Evening
16°C / 17°C

Air quality

Moderate

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

  • CO2 556
  • CO 511
  • NH3 0
  • NO2 72
  • O3 7
  • PM10 38
  • PM25 36
  • SO2 28
  • CH4 2,948

Sunrise / Sunset

21:23
09:22