Incheon, South Korea Weather

Incheon,  Weather
(Photo by rawkkim on Unsplash)

Current conditions

Updated:
17°C
62.6°F
°C °F

Condition: Clear Sky

Pressure: 1,008 hPa

Feel like: 18 °C

Temperature: 17°C

Cloud: 0%

Humidity: 92%

Wind: N - 10 km/h

Visibility: 18.16 km

Weather forecast

Mon
21 Sep
16°C / 26°C
Partly Cloudy
Tue
22 Sep
18°C / 27°C
Drizzle
Wed
23 Sep
18°C / 26°C
Overcast
Thu
24 Sep
18°C / 27°C
Drizzle
Fri
25 Sep
19°C / 27°C
Drizzle
Hourly forecast today:
18:00 PM
16° / 17°
16° / 17°
Clear Sky
92% 20 km/h
19:00 PM
16° / 17°
16° / 17°
Clear Sky
93% 20 km/h
20:00 PM
15° / 16°
15° / 16°
Clear Sky
94% 21 km/h
21:00 PM
15° / 16°
15° / 16°
Clear Sky
94% 20 km/h
22:00 PM
15° / 16°
15° / 16°
Clear Sky
93% 18 km/h
23:00 PM
15° / 17°
15° / 17°
Clear Sky
87% 15 km/h
00:00 AM
15° / 19°
15° / 19°
Clear Sky
75% 14 km/h
01:00 AM
14° / 21°
14° / 21°
Clear Sky
65% 14 km/h
02:00 AM
14° / 23°
14° / 23°
Clear Sky
58% 16 km/h
03:00 AM
14° / 25°
14° / 25°
Clear Sky
52% 18 km/h
04:00 AM
14° / 26°
14° / 26°
Clear Sky
48% 20 km/h

30 Day Averages and Extremes

  • Average high 24.3°C
  • Average low 15.7°C
  • Hottest day 27°C (05 September 2026)
  • Coldest day 10°C (30 September 2026)
  • Average humidity 65.9%
  • Days with precipitation 16 days
  • Highest precipitation 15 mm (24 September 2026)

Yesterday's Data

  • Max: 25°C
  • Min: 16°C
  • Total Precipitation: 0 mm

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

Temperature and possibility of rain in Incheon in the coming days

Rainfall in Incheon in the coming days

Incheon Climate Summary

Incheon features a Humid subtropical, dry winter (Köppen classification: Cwa), with an average annual temperature of 13.69ºC (56.64ºF), which is about 0.09% higher than the national average for South Korea. Annually, the city experiences approximately 134.35 millimeters (5.29 inches) of rainfall, spread across 108.46 rainy days, accounting for 29.72% of the year.

Longitude 37.4562557
Latitude 126.7052062
Yearly high temperature 15.88ºC (60.58ºF)
Yearly low temperature 10.54ºC (50.97ºF)
Hottest month August 29.02ºC (84.24ºF)
Coldest month January -3.75ºC (25.25ºF)
Yearly precip 134.35mm (5.29in)
Days with rainfall 108.46 days (29.72%)
Driest month January (62.85%)
Wettest month July (81.39%)

Weather averages by month

Month High / Low (°C) Rain
January 0.85° / -3.75° 4.36 days
February 3.65° / -1.23° 4.36 days
March 9.29° / 3.67° 5.82 days
April 14.67° / 8.66° 7.36 days
May 20.62° / 14.17° 7.73 days
June 25.32° / 19.18° 10.64 days
July 27.49° / 22.88° 18.91 days
August 29.02° / 24.0° 19.09 days
September 25.34° / 19.7° 9.73 days
October 19.49° / 13.65° 5.27 days
November 11.78° / 6.83° 8.55 days
December 3.09° / -1.27° 6.64 days

Frequently asked questions

1. What is the hottest month in Incheon?

August has the highest average monthly temperature (daily mean of 29.02ºC) and January are the coolest (daily mean of -3.75ºC).

2. What should I wear in Incheon today?

For today's very hot weather in Incheon, with the high temperatures above 27ºC (80.6ºF), consider wearing:
- Thin, moisture-wicking socks
- Lightweight t-shirt or tank top
- Loose and airy fabrics like linen or cotton
- Open-toed sandals or light sneakers

Temperature

Early
16°C / 24°C
Morning
18°C / 22°C
Afternoon
16°C / 19°C
Evening
15°C / 16°C

Air quality

Moderate

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

  • CO2 456
  • CO 173
  • NH3 0
  • NO2 30
  • O3 39
  • PM10 15
  • PM25 13
  • SO2 12
  • CH4 1,661

Sunrise / Sunset

21:19
09:32