Climate Insights for Sunch’ŏn

The climate in Sunch’ŏn is temperate. The average annual temperature is 11°C and approximately 1274mm of precipitation falls per year. July is the wettest month, receiving around 288mm of rainfall. Sunch’ŏn is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are January, December, February, when temperatures can drop to -12°C. Light snow can occur between January and December.

Sunch’ŏn has a wide annual temperature range, spanning 41°C from the coldest to warmest months. The warmest month is July, when average highs reach 29°C and the mean temperature sits around 25°C. The coldest month is January, when overnight lows fall to -12°C and the daily average is -6°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 8°C shift in average temperatures.

Sunch’ŏn is a fairly wet location, receiving approximately 1274mm of precipitation annually, which averages out to around 106mm per month. The wettest month is July, averaging 288mm of rainfall. August and June also tend to see above-average precipitation. The driest month is January, with just 17mm. That's 272mm 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 37cm annually. December is the snowiest month with approximately 10cm.

Sunch’ŏn 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 17km/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 5km/h between the calmest and windiest months.

It is currently spring in Sunch’ŏn, which began on March 20, 2026. Sunch’ŏn 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 July at around 29°C, while the coldest stretch bottoms out in January near -12°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The table below shows monthly climate averages for Sunch’ŏn 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.