Wonju climate: monthly averages: annual mean temperature 8.8 C; warmest month Aug (22.7 C); coldest month Jan (-6.7 C).
Annual mean temperature: 8.8 C
Warmest month: Aug (22.7 C)
Coldest month: Jan (-6.7 C)
Wettest month: Jul (11.56 mm/day)
All-time record high: 34.0 C
All-time record low: -30.3 C
Wonju’s climate features a **cool, humid continental average** with an annual mean temperature of **8.8°C**, peaking in August at **22.7°C** and dropping to **-6.7°C** in January. Rainfall totals about **1,310 mm yearly**, with July the wettest month (11.56 mm/day). Extreme temperatures range from **-30.3°C** (record low) to **34.0°C** (record high), reflecting sharp seasonal contrasts.
Annual mean temperature 8.8 C
Warmest month Aug (22.7 C)
Coldest month Jan (-6.7 C)
Wettest month Jul (11.56 mm/day)
All-time record high 34.0 C
All-time record low -30.3 C
Annual precipitation 1,310 mm / year
Coordinates 37.35139, 127.94528
Population 332,849
Average monthly temperature and rainfall in Wonju
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
-6.7
0.73
11.7
-30.3
Feb
-3.7
1.22
14.7
-24.3
Mar
1.6
1.38
19.0
-16.0
Apr
8.0
2.66
25.9
-7.3
May
14.6
2.58
29.5
0.4
Jun
19.5
4.27
32.9
5.2
Jul
22.4
11.56
32.7
11.7
Aug
22.7
8.76
34.0
11.1
Sep
17.5
5.17
28.5
4.2
Oct
10.8
2.04
25.5
-5.6
Nov
3.3
1.66
19.9
-12.2
Dec
-4.5
0.76
14.7
-21.6
What the Wonju climate table shows
Values are multi-decadal climatological averages for the 37.35139, 127.94528 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
**What’s Wonju’s warmest month?**?
August averages **22.7°C**, the highest monthly mean temperature in the region.
**How much rain does Wonju get annually?**?
The city receives roughly **1,310 mm per year**, with July being the wettest month.