Climate Insights for Dalian

The climate in Dalian is temperate. The average annual temperature is 12°C and approximately 576mm of precipitation falls per year. August is the wettest month, receiving around 142mm of rainfall. Dalian 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 Dalian vary considerably across the year, with a 30°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 27°C and the mean temperature sits around 26°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 3°C between highs and lows. The sharpest temperature change occurs between October and November, with a 7°C shift in average temperatures.

Dalian is a relatively dry area, receiving approximately 576mm of precipitation annually, which averages out to around 48mm per month. The wettest month is August, averaging 142mm of rainfall. July and June also tend to see above-average precipitation. The driest month is January, with just 9mm. That's 133mm less than August, 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 17cm annually. December is the snowiest month with approximately 5cm.

Dalian is moderately windy, with an average annual wind speed of 27km/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 32km/h, which can feel quite blustery and may affect outdoor activities. The calmest conditions occur in July, with average winds dropping to 22km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 10km/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 30km/h in winter, 28km/h in spring, 22km/h in summer, 28km/h in autumn.

It is currently spring in Dalian, which began on March 20, 2026. Dalian 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 27°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 Dalian is during May, June, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 52mm per month. By contrast, August can be uncomfortably hot with highs reaching 27°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 Dalian 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.