Climate and monthly weather forecast
Wonju, South Korea

Situated in South Korea, Wonju is classified under the Koppen Climate Classification as Dwa, which depicts a Humid Continental climate with severe dry winters and hot summers. Throughout the year, this quaint city experiences significant variations in temperature, humidity, and precipitation.

Wonju experiences peak temperatures between 23.9°C (75°F) and 30°C (86°F) from May to August, with the highest temperature of 30°C (86°F) usually recorded in August. Conversely, the coldest months range from December to February, when temperatures can plummet as low as -9.5°C (14.9°F) in January.

Fluctuations in relative humidity are evident throughout the year, with peak humidity reported between June and October, where humidity percentages soar to between 70.3% and 78.5%. The driest months lie between March and April, with relative humidity levels reducing to a low of 58.4%.

Monthly rainfall varies throughout the year, with a majority registered between June and September, reaching up to 362mm (14.25") in July. Consistently, the number of rainfall days increases over these wet months to as high as 16.6 days in July. Contrastingly, the months of December to February present relatively drier conditions with rainfall volumes ranging between 22mm (0.87") and 26mm (1.02").

Wonju experiences most daylight hours from May to July with approximately 14.2 to 14.7 hours while comparatively fewer daylight hours occur from November to January, averaging 9.6 to 10.2 hours. Moreover, sunshine hours remain relatively consistent throughout the year, ranging between 4.7 hours and 7.1 hours, with the lowest recorded in July.

Arguably the best period to visit Wonju falls between May and June. During this time, the weather is relatively pleasant, with moderate temperatures scaling from 11.1°C (52°F) to 27.6°C (81.7°F) and bearable humidity levels ranging from 64.1% to 70.3%. Moreover, these months receive adequate sunshine averaging 7.1 hours daily, ensuring few obstructions to outdoor activities.

The least favourable time to visit Wonju is typically from July to September. These months experience the highest rainfall, with a soaring 362mm (14.25") recorded in July and 290mm (11.42") in August. Additionally, the temperatures are at their peak, ranging from 25.7°C (78.3°F) to 30°C (86°F), and the relative humidity during this period scales up to 78.5%, creating rather uncomfortable conditions.

Spring in Wonju spans from March to May. These months greet the city with moderately high temperatures ranging from 1.7°C (35.1°F) to 23.9°C (75°F). Relative humidity levels during spring stand between 58.4% and 64.1%, offering relatively more comfortable weather. Rainfall during this period is moderate, with May receiving the highest spring rainfall totaling 94mm (3.7").

The summer period in Wonju covers June to August. It is during this time that the city experiences its hottest temperatures, escalating as high as 30°C (86°F) in August. Additionally, the summer months bring along considerably high humidity, with levels exceeding to 78.5% in July and August. The rainfall in summer is high with a record 362mm (14.25") in July and 290mm (11.42") in August.

Autumn in Wonju falls between September and November. These months show a decrease in temperatures, from a high of 25.7°C (78.3°F) in September to a lower 11.5°C (52.7°F) in November. The humidity levels during autumn sit between 70.9% and 76%, decreasing steadily as the season progresses. Rainfall in this period reduces approximately from 173mm (6.81") in September to 44mm (1.73") in November.

Winter descends in Wonju from December to February. During this time, Wonju experiences cold temperatures with the lowest temperature recorded at -9.5°C (14.9°F) in January. Relative humidity levels moderately vary, from 66.9% in December to 64.2% in February. Winter also has the least amount of rainfall, with a minimum of 22mm (0.87") in December.

January’s location on the calendar ushers in the bitter cold of Wonju's winter, a stark contrast from December's still-fresh temperatures. Daylight is somewhat limited, making days appear shorter and more challenging for outdoor activities. Weather in January »

February slightly elevates the temperatures, providing some relief from January's biting chill. People are typically greeted with a slightly lesser number of daylight hours, affecting how long outdoor activities can be maintained. Weather in February »

March marks the transition from winter to spring in Wonju, leading to a palpable shift in the overall weather trends. Temperatures begin to climb up the Celsius scale, as the sun shines longer in the increasingly blue skies. Humidity begins to drop, and the city observes fewer rainfalls, marking the onset of spring blossoming. Weather in March »

April brings in a significant leap in temperature, making the city come alive with the vibrancy of spring. Longer daylight hours boost outdoor activities, as both residents and visitors thrive on the moderate temperatures. On the contrary, April also witnesses an increase in rain, a distinct feature of spring in Wonju. Weather in April »

May embodies the full expression of spring, contributing to the city's charm in its unique ways. Days become longer and warmer, drawing residents outside for a wide array of activities. Meanwhile, periods of rainfall and high humidity levels usher in the region's rainy season. Weather in May »

June brings a noticeable shift as it draws the curtain on spring and welcomes summer in Wonju. A pronounced increase in both temperature and relative humidity makes this stellar weather for those wanting to explore the great outdoors. Weather in June »

July graces the city with the peak of summer heat, drawing sunseekers out in hordes to the great outdoor expanses of Wonju. Longer daylight hours cater to a variety of outdoor activities as the sun generously beams down on the city. Weather in July »

August continues the summer saga in Wonju, with consistently high temperatures and an expected monsoon influence. Despite ranking as the warmest month, it's often associated with the East Asian Monsoon, bringing in a significant amount of rainfall. Weather in August »

September serves as a transition from summer to autumn, providing a pleasing relief from August's intense heat. Slight decreases in all parameters from temperature, daylight hours, rainfall to humidity levels set the base for this transitional phase. Weather in September »

October surprises the city with a burst of vibrant colors as the heart of autumn sets in Wonju. This month records a significant drop in temperatures, allowing residents to enjoy some of the most pleasant conditions of the year. Weather in October »

November brings the cool breeze of late autumn, with a noticeable drop in temperatures, symbolizing winter's onset in Wonju. As the autumn foliage falls off, residents brace themselves for the coming cold months. With less rainfall and ample daylight, it seems to be one of the last opportunities to engage in comfortable outdoor activities. Weather in November »

December spells the advent of winter in Wonju, and the city experiences a drop in temperature, shorter daylight hours, and low rainfall. The trees are bare, marking the transition from late autumn to early winter. A rapid decrease in the daylight hours showcases the arrival of the city's freezing winters. Weather in December »