Wonsan climate: monthly averages: annual mean temperature 9.2 C; warmest month Aug (22.7 C); coldest month Jan (-5.8 C).
Annual mean temperature: 9.2 C
Warmest month: Aug (22.7 C)
Coldest month: Jan (-5.8 C)
Wettest month: Jul (11.58 mm/day)
All-time record high: 33.5 C
All-time record low: -22.1 C
Wonsan’s climate features a temperate pattern with distinct seasonal shifts, averaging **9.2°C annually**. Summers peak in August at **22.7°C**, while January drops to **-5.8°C**, with annual rainfall totaling **1,292 mm** (about **3.54 mm/day**). July is the wettest month, though extremes range from **-22.1°C** to **33.5°C**.
Annual mean temperature 9.2 C
Warmest month Aug (22.7 C)
Coldest month Jan (-5.8 C)
Wettest month Jul (11.58 mm/day)
All-time record high 33.5 C
All-time record low -22.1 C
Annual precipitation 1,292 mm / year
Coordinates 39.15278, 127.44361
Population 329,207
Average monthly temperature and rainfall in Wonsan
Month
Mean temp (C)
Rain (mm/day)
Record high (C)
Record low (C)
Jan
-5.8
0.56
7.6
-21.8
Feb
-3.4
0.96
12.2
-22.1
Mar
1.8
1.06
18.9
-12.7
Apr
8.0
2.19
25.8
-4.2
May
14.5
2.74
33.5
1.5
Jun
19.3
3.62
33.1
8.9
Jul
22.2
11.58
32.9
13.6
Aug
22.7
9.35
32.5
12.9
Sep
18.0
5.03
28.1
6.4
Oct
11.7
2.10
24.6
-3.2
Nov
4.0
2.21
18.4
-11.3
Dec
-3.6
0.78
10.5
-19.2
What the Wonsan climate table shows
Values are multi-decadal climatological averages for the 39.15278, 127.44361 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 Wonsan’s warmest month?**?
August averages **22.7°C**, marking the peak of the year’s heat.
**How much rain does Wonsan get yearly?**?
The city receives roughly **1,292 mm annually**, with July being the wettest month.