This is the short version of Incheon climate: monthly averages, with the monthly detail underneath. The gap between Jan and Aug is 28.2 C here: -3.3 C against 24.9 C. Precipitation peaks in Jul (11.63 mm/day) and bottoms out in Jan (0.64 mm/day), so a 18.2x difference between the two. Taken together that is roughly 1,231 mm of rain a year for the grid cell. Because each page is rebuilt independently, one unavailable upstream never takes the rest of the site down. Use the table for exact numbers, or the related pages below for neighbouring locations and periods.
Annual mean temperature 11.3 C
Warmest month Aug (24.9 C)
Coldest month Jan (-3.3 C)
Wettest month Jul (11.63 mm/day)
All-time record high 35.4 C
All-time record low -21.3 C
Annual precipitation 1,237 mm / year
Coordinates 37.4565, 126.7052
Population 3,015,482
Average monthly temperature and rainfall in Incheon
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
-3.3
0.64
13.3
-21.3
Feb
-0.9
1.08
15.0
-19.0
Mar
3.7
1.20
18.3
-9.3
Apr
9.8
2.40
25.2
-2.7
May
15.8
2.70
28.7
3.9
Jun
20.9
3.87
32.4
9.5
Jul
24.0
11.63
33.8
16.1
Aug
24.9
8.40
35.4
14.3
Sep
20.4
4.59
29.4
8.6
Oct
13.9
1.72
26.8
-1.3
Nov
6.5
1.56
21.2
-5.2
Dec
-1.0
0.71
14.3
-16.5
What the Incheon climate table shows
Values are multi-decadal climatological averages for the 37.4565, 126.7052 grid cell, not a single year. Rain is the daily mean, so a value of 2.00 mm/day is about 60 mm across a 30-day month. Averages smooth over extremes, so use them for planning rather than for what to pack for next Tuesday.
Frequently asked questions
Does Incheon get the same every year?
Close to it. Averaging decades smooths variation, so treat these as typical rather than guaranteed.