The Li River: A Journey Through China’s Most Breathtaking Landscape
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Dalian Weather in September
Dalian in September sees high daytime temperatures of 24°C (75°F) and nighttime lows of 20°C (68°F). Moderate rainfall is typical, with around 55 mm (2.2 in) for the month.
Rainfall in Dalian in September
Records from the past 30 years suggest around 8 days of rain, with 55 mm (2.2 in) average for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Dalian in September
The excellent temperature in Dalian in September makes it a solid month to visit, with 24°C (75°F) during the day and 20°C (68°F) at night. The summer season is characteristic of September. Overall, the month follows a fairly predictable daily temperature pattern. With overnight lows of 20°C (68°F), evenings stay pleasantly warm.
Sunshine in Dalian in September
Expect a lot of sunshine this month, with about 245 hours of sun. These sunny conditions add to the overall experience.
Wind Speed in Dalian in September
In September, average wind speeds reach 4 m/s (8 knots), leading to light to moderate breezes. Conditions vary from day to day, with both calm and windier periods.
Average water temperature in September
At 18°C (64°F), the water is getting there, comfortable enough for most swimmers, though those used to warmer seas may still find it a touch cool.If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit Dalian.
Dalian Temperature in September
Min Temperature
20°C (68°F)
Max Temperature
24°C (75°F)
Water Temperature
18°C (64°F)
Chance of Rain
25%
Precipitation
55 mm (2.2 in)
Rainy days
8 days
Humidity
70%
Windspeed
4 m/s (8 knots)
Sunshine
245 hours
Percentage Sunshine
68%
Dalian Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Dalian - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Dalian typically drop from around 27°C (81°F) at the start of September to approximately 23°C (73°F) by the end. Nights are pleasant, with lows typically ranging from 14°C (57°F) to 20°C (68°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Dalian in September
Browse day-by-day weather records for Dalian spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Dalian historical weather extremes in September
Based on 49 years of weather observations in Dalian between 1976 and 2025, these are the recorded extremes.
- Dalian recorded its highest September temperature of 34°C (93°F) on September 1, 2002.
- The coldest September day was on September 19, 1977, with a maximum of 13°C (55°F).
- The coldest night in September in Dalian was on September 30, 2014, with a minimum of 8°C (46°F).
Best Places in China in September
Find out more about the weather in China and which places have the best travel conditions in this month. See all of China in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Dalian in September
For Dalian in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. Expect water temperatures of around 18°C (64°F), which is definitely too cold for comfortable swimming. Your luggage space is better used for other items. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.
What To Do in Dalian in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming10/10 -
Cycling10/10 -
Walking10/10 -
Barbeque9/10 -
Camping8/10 -
Outdoor sports10/10
Dalian 3-Day Forecast
More climate data for Dalian
Temperature Rainfall Sunshine Humidity Wind Speed Water Temp
See the full Dalian climate overview or explore weather in China.
Popular in September
Where to go in September - average daytime high across popular destinations.
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
The Li River: A Journey Through China’s Most Breathtaking Landscape
Go to China's Zhangjiajie National Park with the highest, the fastest, largest-loaded outdoor elevator in the world
You won't find this unique landscape anywhere else in the world. Thousands of floating mountains overgrown with trees at the top dominate this fairy tale landscape.
Go to Xinjiang in China
In Xinjiang you get to see a mix of East and Central Asia. An experience that you might want to add to your bucket list. You can travel through the province as if you are following an ancient silk route.
Mount Kailash
The best time for a Kailash tour/trekking is from mid-May to mid-October when the temperature is most pleasant. It is warm, dry and sunny in that period.