10-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Partly cloudy
7°
Feels like 7°
Wind↑ NNE 5 km/h
Humidity 40 %
Afternoon
Partly cloudy
12°
Feels like 12°
Wind↑ SSW 9 km/h
Humidity 57 %
11-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Partly cloudy
11°
Feels like 11°
Wind↑ NE 1 km/h
Humidity 81 %
💧 0.1 mm
Afternoon
Partly cloudy
16°
Feels like 16°
Wind↑ WSW 11 km/h
Humidity 64 %
💧 0.1 mm
12-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Partly cloudy
12°
Feels like 12°
Wind↑ N 2 km/h
Humidity 80 %
Afternoon
Clear sky
16°
Feels like 16°
Wind↑ W 5 km/h
Humidity 61 %
13-day outlook — past day 10 this is an outlook from the end of the GFS run: expect differences of several degrees.
Night
Mainly clear
13°
Feels like 13°
Wind↑ NE 3 km/h
Humidity 75 %
Afternoon
Overcast
17°
Feels like 17°
Wind↑ N 6 km/h
Humidity 51 %
Incheon forecast in charts · next 7 days
The week ahead: highs and lows
≈ A week close to the usual temperatures
Highs Lows Usual for the season (1991–2020 average)
Hourly detail
Temperature (°C) Rain (mm) Wind (km/h)
Incheon climate: what a normal year looks like
The hottest stretch is August, when afternoons average 28 °C; the coldest is January, when nights average −6 °C. Between those two months the average temperature changes by 28 °C.
Nights typically freeze from December to February, the coldest averaging −6 °C in January.
The wet season is concentrated from June to August, which brings 57% of the annual total; July by itself averages 302 mm.
From 14 h 45 min of daylight in late June to 9 h 34 min in late December.
Forecast highs for the coming week average 16 °C, 3 °C cooler than a normal October (19 °C).
30-year averages (1991–2020)
Month
Typical high
Typical low
Rainfall
Jan
2 °C
−6 °C
22 mm
Feb
4 °C
−3 °C
27 mm
Mar
9 °C
1 °C
38 mm
Apr
15 °C
7 °C
70 mm
May
20 °C
13 °C
97 mm
Jun
24 °C
18 °C
134 mm
Jul
27 °C
22 °C
302 mm
Aug
28 °C
23 °C
244 mm
Sep
25 °C
18 °C
124 mm
Oct
19 °C
11 °C
56 mm
Nov
12 °C
4 °C
52 mm
Dec
4 °C
−3 °C
27 mm
Whole year
16 °C
9 °C
1,190 mm
Source: our own processing of the ERA5 reanalysis (Copernicus/ECMWF) for 37.46° N, 126.71° E, 1991–2020. ERA5 averages over a 0.25° grid (about 25 km): hills, a coastline or the heat of the city itself can shift local values by a degree or two.
Air you breathe in Incheon: pollution and pollen
4/6
Poor
European Air Quality Index (EAQI), from Copernicus CAMS
PM2.532µg/m³
PM1034µg/m³
Copernicus CAMS model, updated several times a day.
Rain radar around Incheon
Rain observed over the last two hours by official weather radars around Incheon, followed by the radar forecast for the next hour where the weather service provides one.
--:--
Rain radarLast two hours, then forecast where available · drag the timeline
No open weather radar covers Incheon yet: the map shows our hour-by-hour rain forecast (ICON, GFS).
Moon over Incheon
Waning gibbous
79 % illuminated · 19.3 days
Rise 15:47 Set 06:29
Sat31/1069%
Sun1/1159%
Mon2/1149%Last quarter
Tue3/1138%
Wed4/1128%
Thu5/1119%
Fri6/1112%
Sat7/116%
Sun8/112%
Mon9/110%
Tue10/111%New moon
Wed11/113%
Moonrise and moonset in local time (Asia/Seoul); phase and lit fraction from a synodic calculation.
Look up a past day in Incheon
Curious about the weather in Incheon on a given day? Choose a date: we read it from the ERA5 reanalysis (ECMWF / Copernicus C3S), which runs until about a week ago.
Incheon weather at a glance
This page gathers everything about the weather in Incheon, Incheon: conditions now, the forecast for each part of the day and the trend for the coming week. At the moment the sky is “overcast”, it is 12 °C (feels like 12 °C) and the wind blows at 9 km/h.
Expected range today: 10 °C to 18 °C and a dry sky. The forecast comes from the AtmoAtlas engine, which combines ECMWF-AIFS, NOAA GFS and DWD ICON, adjusts cloud cover with METAR reports and uses convective energy (CAPE) to flag storms.
Use the Incheon forecast in your own website or app: one JSON call returns weather, air quality, tides and sun and moon times. The free key needs no card.
