Wŏnju climate
Wŏnju (South Korea) has a monsoon-influenced hot-summer humid continental climate (Köppen Dwa). The average temperature over the year is 11 °C52 °F, and about 1,309 mm52 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Wŏnju climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 032 | −1015 | −524 | 230.9 |
| Feb | 338 | −720 | −229 | 341.4 |
| Mar | 949 | −229 | 439 | 431.7 |
| Apr | 1662 | 439 | 1050 | 803.1 |
| May | 2373 | 1151 | 1762 | 803.1 |
| Jun | 2781 | 1661 | 2271 | 1285.0 |
| Jul | 2883 | 2069 | 2476 | 35814 |
| Aug | 2983 | 2169 | 2576 | 27211 |
| Sep | 2475 | 1559 | 2067 | 1556.1 |
| Oct | 1865 | 846 | 1355 | 632.5 |
| Nov | 1050 | 133 | 542 | 502.0 |
| Dec | 236 | −719 | −228 | 230.9 |
| Year | 2983 | −1015 | 1152 | 1,30952 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 82% | 50% | 2.5 | 9:51 |
| Feb | 78% | 52% | 3.2 | 10:46 |
| Mar | 75% | 53% | 4.2 | 11:51 |
| Apr | 73% | 56% | 4.9 | 13:07 |
| May | 73% | 58% | 5.5 | 14:10 |
| Jun | 75% | 67% | 5.2 | 14:43 |
| Jul | 86% | 79% | 4.0 | 14:30 |
| Aug | 86% | 72% | 4.2 | 13:35 |
| Sep | 83% | 63% | 4.0 | 12:22 |
| Oct | 80% | 48% | 3.5 | 11:09 |
| Nov | 81% | 52% | 2.5 | 10:06 |
| Dec | 82% | 49% | 2.2 | 9:36 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Wŏnju is like
The warmest month is August, with an average high of 29 °C83 °F and a low of 21 °C69 °F. The coldest is January, when highs average 0 °C32 °F and lows −10 °C15 °F. Seasons are strongly marked: the warmest month is on average 29.4 °C52.8 °F warmer than the coldest.
It is wet, with about 1,309 mm52 in of precipitation per year. The wettest three-month stretch is July–September, which brings 60% of the annual total. The wettest month is July (358 mm14 in), the driest is January (23 mm0.9 in).
Relative humidity ranges from 73% in April to 86% in August. The clearest skies (lowest average cloud amount, 48%) are typical of October. Average wind speed near the ground ranges from 6 km/h (4 mph) in June to 9 km/h (6 mph) in April. Daylight lasts from about 9.6 hours in December to 14.7 hours in June.
Best time to visit Wŏnju
Based on these averages, the most comfortable months for sightseeing and outdoor activities are May and October: average highs of 18 °C65 °F to 23 °C73 °F with 63 mm2.5 in to 80 mm3.1 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of 0 °C32 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Wŏnju
- Winter (December–February) — highs 032 to 3 °C38 °F, lows −1015 to −7 °C20 °F, about 27 mm1.1 in of precipitation a month. Pack a winter coat, hat, gloves and warm, non-slip boots and shoes with good grip, as frost is common.
- Spring (March–May) — highs 949 to 23 °C73 °F, lows −229 to 11 °C51 °F, about 68 mm2.7 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket and an extra layer for the cooler mornings and evenings.
- Summer (June–August) — highs 2781 to 29 °C83 °F, lows 1661 to 21 °C69 °F, about 253 mm10.0 in of precipitation a month. Pack light summer clothes such as T-shirts, shorts or light dresses and a good rain jacket or umbrella and quick-drying shoes.
- Autumn (September–November) — highs 1050 to 24 °C75 °F, lows 133 to 15 °C59 °F, about 89 mm3.5 in of precipitation a month. Pack long sleeves, a sweater and a medium jacket.
How Wŏnju compares
Compared with Suwon, about 83 km to the west, Wŏnju is on average 0.5 °C0.9 °F cooler and receives 6% more precipitation (1,309 mm52 in vs 1,240 mm49 in). The difference is largest in December (1.5 °C2.8 °F cooler).
Of the 34 places in South Korea covered by World Climates, Wŏnju is the 31st warmest by annual mean temperature and the 13th wettest by annual precipitation. See all of them on the South Korea climate page.
Places in other countries with the most similar temperature and rainfall pattern: Wŏnsan (North Korea, Dwa), Chongdan-up (North Korea, Dwa) and Kaesŏng (North Korea, Dwa).
Nearby places
- Chungju 42 km · 12 °C53 °F · 1,221 mm48 in
- Chuncheon 61 km · 11 °C51 °F · 1,290 mm51 in
- Hanam 69 km · 11 °C52 °F · 1,276 mm50 in
- Osan 81 km · 12 °C54 °F · 1,232 mm48 in
- Suwon 83 km · 11 °C52 °F · 1,240 mm49 in
- Seoul 89 km · 12 °C53 °F · 1,240 mm49 in
- Cheonan 93 km · 12 °C53 °F · 1,232 mm48 in
- Gangneung 93 km · 13 °C55 °F · 1,426 mm56 in
Frequently asked questions
What is the warmest month in Wŏnju?
August is the warmest month in Wŏnju, with an average high of 29 °C (83 °F) and an average low of 21 °C (69 °F).
What is the coldest month in Wŏnju?
January is the coldest month, with an average high of 0 °C (32 °F) and an average low of -10 °C (15 °F).
When does it rain the most in Wŏnju?
July is the wettest month with about 358 mm (14.1 in) of precipitation; January is the driest with about 23 mm (0.9 in).
What is the best time to visit Wŏnju?
Judging by long-term averages, the most comfortable months are May and October.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 448 m, while Wŏnju lies at about 133 m. Temperatures on this page were therefore adjusted by +2 °C3.7 °F using the standard lapse rate of 6.5 °C per 1,000 m.