Wonju Weather & Climate: Best Time to Visit

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

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 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

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

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

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)