Climate Overview
The climate in Icheon-si is temperate. The average annual temperature is 13°C and approximately 1174mm of precipitation falls per year. July is the wettest month, receiving around 285mm of rainfall. Icheon-si is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, June. The coldest months are January, December, February, when temperatures can drop to -6°C. Light snow can occur between January and December.
Temperature
Icheon-si has a wide annual temperature range, spanning 36°C from the coldest to warmest months. The warmest month is August, when average highs reach 30°C and the mean temperature sits around 26°C. The coldest month is January, when overnight lows fall to -6°C and the daily average is -2°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between November and December, with a 7°C shift in average temperatures.
Precipitation
Icheon-si is a moderately rainy area, receiving approximately 1174mm of precipitation annually, which averages out to around 98mm per month. The wettest month is July, averaging 285mm of rainfall. August and September also tend to see above-average precipitation. The driest month is January, with just 23mm. That's 263mm less than July, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Light snowfall can occur between January and December, totalling around 18cm annually. February is the snowiest month with approximately 5cm.
Wind
Icheon-si is mildly breezy, with an average annual wind speed of 14km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 16km/h, though still comfortable for most outdoor activities. The calmest conditions occur in September, with average winds dropping to 12km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 4km/h between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 15km/h in winter, 16km/h in spring, 13km/h in summer, 12km/h in autumn.
Seasons
89 days until Summer
It is currently spring in Icheon-si, which began on March 20, 2026. Icheon-si is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 30°C, while the coldest stretch bottoms out in January near -6°C. Summer is next, beginning on June 21, 2026 — 89 days from now.
Spring
Temperatures range from 2 to 24°C. Precipitation is moderate at around 222mm for the season, averaging 74mm per month. Winds are moderate at around 16km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 18 to 30°C. Rainfall is heavy, totalling around 618mm across the season with a monthly average of 206mm. Winds are generally light, averaging 13km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 2 to 26°C. Precipitation is moderate at around 251mm for the season, averaging 84mm per month. Winds are generally light, averaging 12km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from -6 to 6°C. Rainfall is relatively light, with around 84mm over the season and a monthly average of 28mm. Expect around 14cm of snow accumulation during this period. Winds are generally light, averaging 15km/h. Warm winter clothing and waterproof boots are a must, and travel may be affected by snow.
Monthly Climate Data
The table below shows monthly climate averages for Icheon-si based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.
