Wonju Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Wonju.
Climate overview of Wonju
Wonju, Gangwon-Do, South Korea, sees big temperature differences between seasons, with August peaking at 30°C (86°F) and January dropping to 3°C (37°F).
With around 1266 mm (50 in) of annual rain/snowfall, Wonju has a notably wet climate. However, this rain/snowfall is not evenly distributed, the city has a distinct dry season from December to February, with warm summers and cold winters. The wettest month is July. The sunniest month is May, with 7.5 hours of sunshine per day on average.
Wonju Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Wonju - and find the best time to visit.
Monthly Temperature in Wonju
Visitors to Wonju can expect significant temperature changes throughout the year. Average daytime temperatures reach a comfortable 30°C (86°F) in August. In January, the coolest month of the year, temperatures drop to a chilly 3°C (37°F).
At night, temperatures range from around 21°C (70°F) in August to -8°C (18°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Wonju
Wonju is known for its substantial rain/snowfall, with annual precipitation reaching 1266 mm (50 in). Wonju can be quite wet during July, receiving approximately 299 mm (12 in) of precipitation over 16 rainy days.
In contrast, during the driest month (January), you will experience much drier conditions, with 27 mm (1.1 in) of precipitation spread across 8 snowy days. For more details, please visit our Wonju Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Wonju
Wonju experiences moderate variation in sunshine hours across the seasons. With 7.5 hours daily sunshine in May, it dips to 5.0 hours in July, offering a balanced mix of sunny and overcast days.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Wonju by Month
The relative humidity is high throughout the year in Wonju.
The city experiences its highest humidity in July, reaching 77%. In April, the humidity drops to its lowest level at 57%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Wonju
The mean wind speed over the year ranges from () in September and October to 1 m/s (2 knots) in January, February, March, April, May, June, July, August, November and December. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Wonju
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: October
- Warmest weather: July and August
- Most sunshine: April and May
- Wettest months: June, July, August and September, when rainfall is highest.
- Seasonal pattern: A distinct dry season from December to February, with warm summers and cold winters
- Coldest conditions: January, with freezing nights around -8°C (18°F).
Frequently asked questions about the climate in Wonju
What is the best time to visit Wonju?
October typically offers the most optimal weather in Wonju. In contrast, January, February, July, August and December tend to have less optimal conditions. Wonju has a distinct dry season from December to February, with warm summers and cold winters.
What temperatures can I expect in Wonju?
Daytime highs range from 3°C (37°F) in January to 30°C (86°F) in August. Nighttime lows range from -8°C (18°F) to 21°C (70°F). Temperatures vary considerably through the year.
How much rain does Wonju get?
Annual rainfall is around 1266 mm (50 in). July is the wettest month with 299 mm (12 in), while January is the driest with 27 mm (1.1 in).
How sunny is Wonju?
Wonju receives around 2,155 hours of sunshine per year. May is the sunniest month with 225 hours, while July is the cloudiest with just 151 hours. Overall, Wonju enjoys abundant sunshine.
Wonju 3-Day Forecast
Wonju on the map
Wonju is highlighted - select any city to see its climate.
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