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 perfect 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.

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• February
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• May
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• October
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• December

For a detailed overview over the year and the best time to visit China, check out our Dalian's climate page.

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%  

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

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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

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Historical weather 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.

Historical weather Temperatures Precipitation

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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).

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.

Swimming

10/10

Cycling

10/10

Walking

10/10

Barbeque

9/10

Camping

8/10

Outdoor sports

10/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit China, check out our Dalian's climate page.

More climate data for Dalian

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Dalian climate overview or explore weather in China.