Shanghai Weather in September

During September, Shanghai experiences high daytime temperatures of 28°C (82°F) and cooler nights around 23°C (73°F). Expect quite a bit of rainfall. Around 111 mm (4.4 in) is typical.

Rainfall in Shanghai in September

Rain is expected on roughly 13 days, totalling around 111 mm (4.4 in) for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.

Temperature in Shanghai in September

If you're visiting Shanghai in September, expect highs of 28°C (82°F) and overnight lows around 23°C (73°F). Overall, the month follows a fairly predictable daily temperature pattern. With overnight lows of 23°C (73°F), evenings stay pleasantly warm.

Sunshine in Shanghai in September

With about 169 hours of sunshine, the area enjoys a nice balance of sun and overcast, creating a pleasant environment.

Wind Speed in Shanghai in September

Wind speeds average 2 m/s (4 knots) during September. At this speed, expect light breezes that you can feel on your face and cause leaves to rustle gently. Since this is an average, some days are calmer with barely any wind while others have more noticeable gentle breezes.

Average water temperature in September

With water at 24°C (75°F), you can expect warm, pleasant conditions for any water activity. There's no adjustment period — it feels comfortable straight away.

Our weather planner can help you find worldwide destinations with pleasant weather during this period. October typically offers the best weather for Shanghai.

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

Shanghai Temperature in September

Min Temperature 23°C (73°F)  

Max Temperature 28°C (82°F)  

Water Temperature 24°C (75°F)  

Chance of Rain 43%  

Precipitation 111 mm (4.4 in)  

Rainy days 13 days  

Humidity 75%  

Windspeed 2 m/s (4 knots)  

Sunshine 169 hours  

Percentage Sunshine  

Daily Historical Temperatures

50-year average (1976-2025)

Based on our historical records, temperatures in Shanghai typically drop from around 30°C (86°F) at the start of September to approximately 26°C (79°F) by the end. Nights are warm, with lows typically ranging from 19°C (66°F) to 24°C (75°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 Shanghai in September

Browse day-by-day weather records for Shanghai 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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Shanghai historical weather extremes in September

According to our 49 years of weather records for Shanghai, the following extremes were recorded between 1976 and 2025.

• The hottest September day on record in Shanghai reached 37°C (99°F) (September 6, 2025).
• The lowest daytime temperature in September was 19°C (66°F), recorded on September 19, 1978.
• Nighttime temperatures dropped to 11°C (52°F) on September 27, 1988, marking the coldest September night on record.

What to Wear in Shanghai in September

Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes. With water temperatures around 24°C (75°F), swimming conditions are excellent. Pack your swimsuit, goggles, and maybe some water shoes. Sunglasses could come in handy during the sunnier parts of your trip.

What To Do in Shanghai in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

7/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

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 Shanghai's climate page.

More climate data for Shanghai

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

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