Iksan climate
Iksan (South Korea) has a monsoon-influenced hot-summer humid continental climate (Köppen Dwa). The average temperature over the year is 13 °C55 °F, and about 1,267 mm50 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Iksan climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin | Frost days |
|---|---|---|---|---|---|
| Jan | 337 | −524 | −130 | 271.1 | 29 |
| Feb | 542 | −326 | 134 | 391.5 | 24 |
| Mar | 1151 | 032 | 542 | 502.0 | 17 |
| Apr | 1763 | 542 | 1152 | 853.4 | 1 |
| May | 2373 | 1152 | 1763 | 853.3 | 0 |
| Jun | 2781 | 1762 | 2271 | 1365.4 | 0 |
| Jul | 2984 | 2171 | 2577 | 31712 | 0 |
| Aug | 3085 | 2272 | 2679 | 26110 | 0 |
| Sep | 2578 | 1762 | 2170 | 1345.3 | 0 |
| Oct | 2067 | 1049 | 1558 | 562.2 | 0 |
| Nov | 1355 | 338 | 846 | 451.8 | 7 |
| Dec | 541 | −327 | 134 | 321.3 | 25 |
| Year | 3085 | −524 | 1355 | 1,26750 | 103 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total. Frost days are for the whole grid cell.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 77% | 74% | 2.2 | 9:58 |
| Feb | 74% | 70% | 3.1 | 10:50 |
| Mar | 74% | 67% | 4.2 | 11:52 |
| Apr | 73% | 66% | 5.0 | 13:04 |
| May | 75% | 67% | 5.4 | 14:03 |
| Jun | 77% | 76% | 5.0 | 14:35 |
| Jul | 85% | 79% | 4.5 | 14:22 |
| Aug | 83% | 70% | 4.6 | 13:31 |
| Sep | 81% | 65% | 4.2 | 12:21 |
| Oct | 78% | 56% | 3.6 | 11:12 |
| Nov | 77% | 63% | 2.5 | 10:12 |
| Dec | 78% | 72% | 2.0 | 9:44 |
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 Iksan is like
The warmest month is August, with an average high of 30 °C85 °F and a low of 22 °C72 °F. The coldest is January, when highs average 3 °C37 °F and lows −5 °C24 °F. Seasons are strongly marked: the warmest month is on average 26.8 °C48.2 °F warmer than the coldest.
It is wet, with about 1,267 mm50 in of precipitation per year. The wettest three-month stretch is June–August, which brings 56% of the annual total. The wettest month is July (317 mm12 in), the driest is January (27 mm1.1 in).
Relative humidity ranges from 73% in April to 85% in July. The clearest skies (lowest average cloud amount, 56%) are typical of October. Average wind speed near the ground ranges from 7 km/h (5 mph) in June to 10 km/h (6 mph) in March. Daylight lasts from about 9.7 hours in December to 14.6 hours in June.
A lasting snow cover is typical in January and February, when the average snow depth in the reanalysis exceeds 10 cm (deepest in January, about 13 cm).
Best time to visit Iksan
Based on these averages, the most comfortable months for sightseeing and outdoor activities are May and October: average highs of 20 °C67 °F to 23 °C73 °F with 56 mm2.2 in to 85 mm3.3 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of 3 °C37 °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 Iksan
- Winter (December–February) — highs 337 to 5 °C42 °F, lows −524 to −3 °C27 °F, about 32 mm1.3 in of precipitation a month. Pack a warm coat, layers and closed shoes and shoes with good grip, as frost is common.
- Spring (March–May) — highs 1151 to 23 °C73 °F, lows 032 to 11 °C52 °F, about 73 mm2.9 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 30 °C85 °F, lows 1762 to 22 °C72 °F, about 238 mm9.4 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 1355 to 25 °C78 °F, lows 338 to 17 °C62 °F, about 78 mm3.1 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket.
How Iksan compares
Compared with Jeonju, about 22 km to the southeast, Iksan has practically the same average temperature and receives a similar amount of precipitation.
Of the 34 places in South Korea covered by World Climates, Iksan is the 15th warmest by annual mean temperature and the 19th 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: Matsumoto (Japan, Dfa), Wŏnsan (North Korea, Dwa) and Kansas City (United States, Dfa).
The same NASA POWER grid cell also contains Gunsan (pop. 264,656). Their long-term averages in this dataset are essentially the same as for Iksan, so they do not have separate pages.
Nearby places
- Jeonju 22 km · 12 °C54 °F · 1,267 mm50 in
- Jeongeup 38 km · 13 °C55 °F · 1,303 mm51 in
- Daejeon 59 km · 12 °C54 °F · 1,225 mm48 in
- Gwangju 88 km · 13 °C55 °F · 1,381 mm54 in
- Cheonan 98 km · 12 °C53 °F · 1,232 mm48 in
- Sangju 120 km · 12 °C54 °F · 1,141 mm45 in
- Suncheon 121 km · 13 °C56 °F · 1,408 mm55 in
- Gumi 126 km · 12 °C54 °F · 1,215 mm48 in
Frequently asked questions
What is the warmest month in Iksan?
August is the warmest month in Iksan, with an average high of 30 °C (85 °F) and an average low of 22 °C (72 °F).
What is the coldest month in Iksan?
January is the coldest month, with an average high of 3 °C (37 °F) and an average low of -5 °C (24 °F).
When does it rain the most in Iksan?
July is the wettest month with about 317 mm (12.5 in) of precipitation; January is the driest with about 27 mm (1.1 in).
What is the best time to visit Iksan?
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.