ClimateAverages

Wonju Climate

Gangwon-do, South Korea · population 243,387 · 153 weather stations within 200 km · records 1819 to 2025

Average annual daytime high
16.3°C
Warmest month · August
29.1°C
Typical daytime high
Coldest month · January
-10.2°C
Typical overnight low

Wonju has an average annual daytime high of 16.3°C, based on the 1951 to 1980 baseline. Its warmest month is August, when highs typically reach 29.1°C, and its coldest is January, with overnight lows near -10.2°C.

Month by month averages

MonthAvg highAvg low
January0.9°C-10.2°CColdest
February3.7°C-7.4°C
March9.7°C-2.2°C
April17.1°C3.8°C
May23.2°C9.7°C
June26.1°C15.0°C
July28.4°C19.8°C
August29.1°C19.7°CWarmest
September24.6°C13.2°C
October18.9°C5.4°C
November11.0°C-0.7°C
December3.5°C-6.9°C

Temperature range across the year

-12°-1°9°20°31°JanFebMarAprMayJunJulAugSepOctNovDec
Daytime high Overnight low
Hottest year on record
2023
+2.0°C vs. 1951–1980
Coldest year on record
1822
-2.5°C vs. 1951–1980

These figures reflect annual averages, not single-day records. Daily observations are outside this dataset's precision.

Is Wonju getting hotter?

Since 1900, Wonju's average temperature has risen by +2.4°C. Compared to the earliest station records that begin in 1819, warming totals +2.2°C.

9.7°10.5°11.3°12.1°12.9°1951–1980 baseline190019251950197520002025

20-year smoothed annual temperature reconstructed from station anomalies. Dashed line: 1951–1980 baseline.

Best time to visit
April to October

Daytime highs sit within a comfortable 15°C to 26°C range.

FAQ

What is the average temperature in Wonju?

Wonju's average annual daytime high is 16.3°C, based on the 1951 to 1980 baseline period. The warmest month is August, with highs averaging 29.1°C, and the coldest is January, with lows averaging -10.2°C.

What is the warmest month in Wonju?

August is the warmest month in Wonju, with typical daytime highs of 29.1°C.

What is the hottest year on record for Wonju?

2023 is the hottest year on record for Wonju, running +2.0°C above the 1951 to 1980 baseline.

Is Wonju getting hotter?

Yes. Since 1900, Wonju has warmed by roughly +2.4°C.

When is the best time to visit Wonju?

April to October typically offers the most comfortable daytime highs, in the 15°C to 26°C range.

Nearby cities

Baseline period 1951 to 1980. Monthly averages are the mean of station observations weighted by proximity. Warming trend is the 20-year smoothed anomaly against that baseline.