Climate Insights for Changyŏn

The climate in Changyŏn is temperate. The average annual temperature is 12°C and approximately 890mm of precipitation falls per year. July is the wettest month, receiving around 187mm of rainfall. Changyŏn is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are January, February, December, when temperatures can drop to -3°C. Light snow can occur between January and December.

Temperatures in Changyŏn vary considerably across the year, with a 29°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 26°C and the mean temperature sits around 25°C. The coldest month is January, when overnight lows fall to -3°C and the daily average is -1°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows. The sharpest temperature change occurs between November and December, with a 7°C shift in average temperatures.

Changyŏn is a moderately rainy area, receiving approximately 890mm of precipitation annually, which averages out to around 74mm per month. The wettest month is July, averaging 187mm of rainfall. August and June also tend to see above-average precipitation. The driest month is January, with just 21mm. That's 166mm 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 27cm annually. December is the snowiest month with approximately 9cm.

Changyŏn is moderately windy, with an average annual wind speed of 23km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 28km/h, noticeable enough to affect lighter outdoor activities. The calmest conditions occur in August, with average winds dropping to 19km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 9km/h gap 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 27km/h in winter, 24km/h in spring, 19km/h in summer, 23km/h in autumn.

It is currently spring in Changyŏn, which began on March 20, 2026. Changyŏn 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 26°C, while the coldest stretch bottoms out in January near -3°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Changyŏn is during September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 63mm per month. By contrast, August can be uncomfortably hot with highs reaching 26°C, while January is the coldest period with lows dropping to -3°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Changyŏn 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.